If we want to find when the population of species A will be equal to the population of species B, we need to see when the two equations for the population of each species are equal, ie. equate them and solve for t. Thus:
2000e^(0.05t) = 5000e^(0.02t)
(2/5)e^(0.05t) = e^(0.02t) (Divide each side by 5000)
2/5 = e^(0.02t) / e^(0.05t) (Divide each side by e^(0.05t))
2/5 = e^(-0.03t) (use: e^a / e^b = e^(a - b))
ln(2/5) = -0.03t (use: if b = a^c, then loga(b) = c )
t = ln(2/5) / -0.03 (Divide each side by -0.03)
= 30.54 (to two decimal places)
Therefor, the population of species A will be equal to the population of species B after 30.54 years.
I wasn't entirely sure about the rounding requirements so I've left it rounded to two decimal places.
Using point-slope form, write the equation of the line that passes through the point (-4, 12) and has a slope of -3/4
Answer:
[tex]y-12=-\frac{3}{4}(x+4)[/tex]
Step-by-step explanation:
we know that
The equation of the line into slope point form is equal to
[tex]y-y1=m(x-x1)[/tex]
In this problem we have
[tex](x1,y1)=(-4,12)[/tex]
[tex]m=-\frac{3}{4}[/tex]
substitute
[tex]y-12=-\frac{3}{4}(x+4)[/tex]
Maria invests $1000 in a savings account that pays 4% interest compounded annually. Write an exponential equation to find the value of the account, A, at the end of five years.
Answer:
A = 1000·1.04^5
Step-by-step explanation:
When 4% of the amount in the account is added to the amount in the account, the result is that amount is multiplied by 1.04:
amount + 0.04×amount = amount×(1 + .04) = 1.04×amount
The account is multiplied this way for each of 5 years. An exponent is used to signify repeated multiplication, so we can write the account balance as ...
A = ((((1000×1.04)×1.04)×1.04)×1.04)×1.04 = 1000×1.04^5
The exponential equation that represents the value of the account, ( A ), after five years is [tex]\[ A = 1000 \times (1.04)^5 \][/tex]
To determine the value of Maria's savings account after five years with annual compounding interest, we use the formula for compound interest:
[tex]\[ A = P \left(1 + \frac{r}{n}\right)^{nt} \][/tex]
Given:
( P = 1000 ) dollars (initial investment)
( r = 0.04 ) (4% interest rate per year)
( n = 1 ) (compounded annually)
( t = 5 ) years
Now, substitute these values into the formula:
[tex]\[ A = 1000 \left(1 + \frac{0.04}{1}\right)^{1 \cdot 5} \][/tex]
[tex]\[ A = 1000 \left(1 + 0.04\right)^5 \][/tex]
[tex]\[ A = 1000 \times (1.04)^5 \][/tex]
Calculate [tex]\( (1.04)^5 \)[/tex]:
[tex]\[ (1.04)^5 \approx 1.21665 \][/tex]
Now multiply by 1000:
[tex]\[ A \approx 1000 \times 1.21665 \][/tex]
[tex]\[ A \approx 1216.65 \][/tex]
Therefore, the value of Maria's savings account at the end of five years, with annual compounding interest at 4%, is approximately [tex]\( \$1216.65 \)[/tex].
To summarize, the exponential equation that represents the value of the account, ( A ), after five years is:
[tex]\[ A = 1000 \times (1.04)^5 \][/tex]
Someone help me out please
For this case we have to define trigonometric relations of rectangular triangles that, the cosine of an angle is given by the leg adjacent to the angle on the hypotenuse of the triangle. That is, according to the data of the figure we have:
[tex]Cos (45) = \frac {6} {h}[/tex]
Where:
h: It's the hypotenuse
So:
[tex]\frac {\sqrt {2}} {2} = \frac {6} {h}[/tex]
We cleared h:
[tex]h \sqrt {2} = 6 * 2\\h \sqrt {2} = 12\\h = \frac {12} {\sqrt {2}}[/tex]
We rationalize:
[tex]h = \frac {12 \sqrt {2}} {(\sqrt {2}) ^ 2}\\h = \frac {12 \sqrt {2}} {2}\\h = 6 \sqrt {2}[/tex]
Answer:
Option C
ANSWER
[tex] 6\sqrt{2} \: units[/tex]
EXPLANATION
This is an isosceles right triangle.
The two legs of an isosceles right triangle are equal, hence each of them is 6 units each.
Let h be the hypotenuse, then from the Pythagoras Theorem,
[tex] {h}^{2} = {6}^{2} + {6}^{2} [/tex]
[tex]{h}^{2} = {6}^{2} \times 2[/tex]
Take square root of both sides;
[tex]{h} = \sqrt{ {6}^{2} \times 2 } [/tex]
[tex]{h}= \sqrt{ {6}^{2} } \times \sqrt{2} [/tex]
[tex]{h} = 6\sqrt{2} \: units[/tex]
The correct answer is C
Genet multiplied a 3-digit number by 1002 and got AB007C, where A, B, and C stand for digits. What was Genet's original 3-digit number?
Answer:
539
Step-by-step explanation:
The 007C requires the least significant two digits be in the range 35-39. In order for the 10-thousands digit to be zero, the sum of 1000 times the least digit of Genet's number and 2 times the hundreds digit must result in a sum with no thousands. About the only way to do that is to make the least digit 9 and the hundreds digit 5.
Then you have ...
539 × 1002 = 540078 . . . . . ABC =548
Can i get some help with these LCD equations please.
Answer:
y = -1/4
Step-by-step explanation:
y/5 +3/10 = (y+2)/7
The LCD is 10·7 = 70. Multiplying the equation by 70 gives ...
14y +21 = 10(y +2)
14y +21 = 10y +20 . . . . eliminate parentheses
4y + 21 = 20 . . . . subtract 10y
4y = -1 . . . . . . . . . subtract 21
y = -1/4 . . . . . . . . .divide by 4
_____
Check
(-1/4)/5 +3/10 = (-1/4 +2)/7 . . . . . substitute for y
-1/20 +6/20 = (7/4)/7 . . . simplify a bit, rewrite 3/10
5/20 = 1/4 . . . . . . . . . . true
HELP!!!!!! Can someone help me write a system of linear inequalities to represent the graph? I'm having trouble since the one line is on the y-axis.
Answer:
x ≤ 0y ≤ 3/4x -5Step-by-step explanation:
The equation for the y-axis is x = 0. Your shading is to the left of that, so the inequality will be x ≤ 0.
The blue line has a rise of 3 for a run of 4, so its slope is 3/4. It intercepts the y-axis at y=-5, so the slope-intercept equation for that line is y = 3/4x -5. Since the shading is below that solid line, the inequality is ...
y ≤ 3/4x -5
5500 dollars is placed in an account with an annual interest rate of 6.5%. To the nearest tenth of a year, how long will it take for the account value to reach 19700 dollars?
Answer:
t = 20.3 years
Step-by-step explanation:
I am assuming that this amount of money invested is compounding annually, so I am going to use the formula that goes along with that assumption:
[tex]A(t)=P(1+r)^t[/tex]
where A(t) is the amount at the end of compounding, P is the initial investment, r is the interest rate in decimal form, and t is the time in years. We are solving for t. Right now it is the exponent, but we have to get it down from that position in order to solve for it. The only way we can do that is to eventually take the natural log of both sides. But let's write the equation first and then do some simplifying to make things a bit easier mathematically:
[tex]19,700=5,500(1+.065)^t[/tex] and
[tex]19,700=5,500(1.065)^t[/tex]
We will divide both sides by 5,500:
[tex]3.58181818=(1.065)^t[/tex]
Taking the natural log of both sides gives us:
[tex]ln(3.58181818)=ln(1.065)^t[/tex]
The power rule for logs (both common and natural) tells us that once we take the log or ln of a base, the exponent comes down out front:
ln(3.58181818) = t ln(1.065)
Now we can divide both sides by ln(1.065) and do the math on our calculators to find that
t = 20.2600 or, to the tenth of a year,
t = 20.3 years
It will take for $5500 to grow to $19700 at a 6.5% interest rate, approximately 19.7 years for the account to reach.
The question involves calculating the amount of time it takes for an investment to grow to a certain value given a fixed annual interest rate. This is a common problem in personal finance and uses the concept of compound interest. To find the time needed for an initial investment of $5500 to grow to $19700 at an annual interest rate of 6.5%, we can use the formula for compound interest:
A = P(1 + r/n)^(nt)
Where:
A is the amount of money accumulated after n years, including interest.
P is the principal amount (the initial amount of money).
r is the annual interest rate (decimal).
n is the number of times that interest is compounded per year.
t is the time in years.
In this case, interest is compounded annually so n = 1. We rearrange the formula to solve for t:
t = log(A/P) / (n*log(1 + r/n))
Where log is the logarithm function. We substitute our known values:
t = log(19700/5500) / (1*log(1 + 0.065/1))
Calculating this gives:
t ≈ log(3.5818) / log(1.065)
t ≈ 19.7
Jenny biked 3 miles less than twice the number of miles Marcus biked. Jenny biked a total of 4 miles. Write an equation to determine how many miles Marcus biked.
Final answer:
To determine how many miles Marcus biked, we can write the equation 2m - 3 = 4, where 'm' represents the number of miles Marcus biked. Solving this equation, we find that Marcus biked 3.5 miles.
Explanation:
To write an equation to determine how many miles Marcus biked, we can use the given information. Let's assume that the number of miles Marcus biked is represented by the variable 'm'. According to the problem, Jenny biked 3 miles less than twice the number of miles Marcus biked. So, we can write the equation as: 2m - 3 = 4.
To solve this equation, we need to isolate the variable 'm'. Adding 3 to both sides of the equation, we get: 2m = 7. Finally, dividing both sides by 2, we find that Marcus biked 3.5 miles.
Use the linear combination method to solve the system of equations. Explain each step of your solution.
-4x + 9y = 9
x - 3y = -6
Answer:
(9,5)
Step-by-step explanation:
Linear combination (also known as elimination) is trying to somehow combine the equations together so that it eliminates one variable in order to solve for the other one.
So you have
-4x+9y=9
x-3y =-6
In elimination, you want the equations to be in the same form which they are here in this case. You want one of the columns to contain opposites or sames.
If opposites, you add the equations.
If sames, you subtract the equations.
We have neither opposites or sames in either of the first two variable columns which is where we want one of these columns to be.
So I'm going to multiply the bottom equation by 3. This is not the only way. This is the way I'm going to do it. You could decide to multiply the bottom equation by 4 or -4 or -3 instead.
So anyways multiply bottom equation by 3. This is what my system looks like now:
-4x+9y=9
3x-9y=-18
----------------Now we get to add this equations because the 2nd column,
the y column, we have opposites.
------------------------adding now
-1x+0y=-9 -4+3=1 and -9+9=0 and 9+-18=0
-x =-9 -1x=-1*x=-x and 0y=0*y=0
x =9 Take opposite of both sides
Now once we find one variable we must obtain the other variable by replacing x with 9 and solving for y in one of the equations (don't use both-just choose one- doesn't matter which)
x-3y=-6 was the second equation before manipulation
Plug in 9 for x
9-3y=-6
Subtract 9 on both sides
-3y=-6-9
-3y=-15
Divide both sides by -3
y=5
So the solution is (x,y)=(9,5)
PLS HELP!!!
In a freshman high school class of 80 students, 22 students take Consumer Education, 20 students take French, and 4 students take both. Which equation can be used to find the probability, P, that a randomly selected student from this class takes Consumer Education, French, or both?
Answer:
[tex]P=\frac{11}{40}+\frac{1}{4}-\frac{1}{20}[/tex]
Step-by-step explanation:
Given,
Students of,
Consumer education, n(C) = 22,
French, n(F) = 20,
Both, n(C∩F) = 4,
Total students, n(S) = 80
Thus, the number of students from Consumer Education, French, or both,
n(C∪F) = n(C) + n(F) - n(C∩F)
= 22 + 20 - 4
[tex]\text{Probability}=\frac{\text{Favourable outcomes}}{\text{Total outcomes}}[/tex]
Hence, probability of a student from Consumer Education, French, or both,
[tex]P=\frac{n(C\cup F)}{n(S)}[/tex]
[tex]=\frac{22+20-4}{80}[/tex]
[tex]=\frac{22}{80}+\frac{20}{80}-\frac{4}{80}[/tex]
[tex]=\frac{11}{40}+\frac{1}{4}-\frac{1}{20}[/tex]
LAST option is correct.
The equation of probability, P, that represents a randomly selected student from this class takes Consumer Education, French, or both are: [tex]\rm Probability = \dfrac{1}{4} + \dfrac{11}{40} -\dfrac{ 1}{20}[/tex] .
Given :
In a freshman high school class of 80 students, 22 students take Consumer Education, 20 students take French, and 4 students take both.
Given that students take Consumer Education: n(C) = 22
The students that take French: n(F) = 20
The students that take both: [tex]\rm n(C\cap F) = 4[/tex]
Total Students: n(S) = 80
Students that take Consumer, French, or both:
[tex]\rm n(C\cup F) = n(F) + n(C) - n(C\cap F)[/tex]
[tex]\rm n(C\cup F) = 20 + 22 - 4[/tex]
[tex]\rm Probability = \dfrac{Favourable \;Outcomes}{Total \; Outcomes}[/tex]
[tex]\rm Probability = \dfrac{n(C\cup F)}{n(S)}[/tex]
[tex]\rm Probability = \dfrac{20 + 22 - 4}{80}[/tex]
[tex]\rm Probability = \dfrac{20}{80} + \dfrac{22}{80} -\dfrac{ 4}{80}[/tex]
[tex]\rm Probability = \dfrac{1}{4} + \dfrac{11}{40} -\dfrac{ 1}{20}[/tex]
Therefore, the correct option is D).
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Andy timed himself throughout the school year to see how many math facts he could complete in 111 minute. Andy gets 222 minutes of extra computer time for every math fact he completes. How many extra minutes did he get in February?
Andy gets 222 minutes of extra computer time for every math fact he completes. To find out how many extra minutes he got in a specific month, multiply the number of math facts he completed in that month by 222.
Explanation:To find out how many extra minutes Andy got in February, we need to know how many math facts he completed in February. Let's say he completed x math facts in February. Since Andy gets 222 minutes of extra computer time for every math fact he completes, the total extra minutes he got in February can be calculated by multiplying the number of math facts he completed in February (x) by 222.
So, the total extra minutes Andy got in February is 222x.
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4. If a decorative sign in the form of a circle has a diameter of 10 feet, what it the area of the sign, to the nearest square foot?
A. 79 ft2
B. 31 ft2
C. 157 ft2
D. 16 ft2
For this case we have that by definition, the area of a circle is given by:
[tex]A = \pi * r ^ 2[/tex]
Where:
A: It is the radius of the circle
We have as data that the diameter is 10 feet, then the radius is half, that is, 5 feet.
Substituting:
[tex]A = \pi * (5) ^ 2\\A = 25 \pi\\A = 78.5[/tex]
Rounding out we have that the circle area is[tex]79 \ ft ^ 2[/tex]
Answer:
Option A
Answer:
A. 79 ft²
Step-by-step explanation:
Area of a circle is given by the formulae
[tex]A=\pi *r^2[/tex]
where r is the radius of the circle
Given diameter= 10 ft
Radius of a circle is one half the diameter of a circle.
Radius = [tex]r=\frac{10}{2} =5ft[/tex]
Area=[tex]\pi *5^2=3.14*5^2=78.5ft^2\\\\=79ft^2[/tex]
A hot dog vendor has determined that the number of hot dogs he sells per day is inversely proportional to the price he charges. The vendor wants to decide if increasing his price by 55 cents will drive away too many customers. On average, he sells 200 hot dogs a day at a price of $3.85 per hot dog. How many hot dogs can he expect to sell if the price is increased by 55 cents? Round your answer to the nearest hot dog.
Answer:
175 hot dogs
Step-by-step explanation:
The new price will be $3.85 + 0.55 = $4.40. Since the price has increased by a factor of 4.40/3.85 = 8/7, the number of hot dogs sold, which is inversely proportional, will be ...
(7/8)·200 = 175 . . . hot dogs sold at the higher price
The vendor can expect to sell approximately 233 hot dogs if the price is increased by 55 cents.
Explanation:To determine how many hot dogs the vendor can expect to sell if the price is increased by 55 cents, we can use the inverse proportionality relationship between the number of hot dogs sold and the price charged.
First, let's set up a proportion with the initial price and number of hot dogs sold:
$3.85 / 200 = (new price + $0.55) / x
Next, we can cross multiply and solve for x:
x = (200 * ($3.85 + $0.55)) / $3.85
Calculating this expression gives us a value of x ≈ 233.77.
Since the number of hot dogs sold must be a whole number, we round down to the nearest whole number, giving us an estimated value of 233 hot dogs.
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simplify. 2/3 = 2/9m
a. 1/3
b. -1/3
c. 3
d.-3
Answer:
3
Step-by-step explanation:
2/3 =2/9 m
2/3 =2m/9 note: 2/9 m is the same as 2/9 *m/1=2m/9
cross multiply
18=6m
so m=3
[tex]\text{Hey there!}[/tex]
[tex]\text{In order for you to solve for the value of m you have to flip the equation around!}[/tex]
[tex]\text{Here is what I meant}\downarrow[/tex]
[tex]\bf{\frac{2}{9}m=\frac{2}{3}}[/tex]
[tex]\text{Then for your second step, you have to MULTIPLY by\ }\frac{9}{2}\text{\ on your sides}[/tex]
[tex]\text{Here's what I meant}\downarrow[/tex]
[tex]\bf{\frac{9}{2}(\frac{2}{9})m=\frac{9}{2}(\frac{2}{3})}[/tex]
[tex]\text{Cancel out:}\frac{9}{2}(\frac{2}{9}m)\text{\ because it equals to 1}[/tex]
[tex]\text{Keep: \ }\frac{9}{2}(\frac{2}{3})\text{\ because it helps us solve for the value of m}[/tex]
[tex]\text{If you solved the kept one correctly, you have your answer}[/tex]
[tex]\boxed{\boxed{\text{Answer: C. 3}}}\checkmark[/tex]
[tex]\text{Good luck on your assignment and enjoy your day!}[/tex]
~[tex]\frak{LoveYourselfFirst:)}[/tex]
A swimming pool measures 35 feet wide by 50 feet long. What is the ratio of the length to the perimeter in simplest form?
Answer:
i think it is 5:17
Step-by-step explanation:
length=50
perimeter=170
the highest factor of 50 and 170 is 10 so the answer will be 5:17
hopefully this made sense
Evaluate the following expression for m= 8 and p= -12
M^2-|p|
76
52
-52
-76
Answer:
52
Step-by-step explanation:
Put the numbers in the expression and do the arithmetic.
(-8)² - |-12| = 64 -12 = 52
Use the Distance Formula to find the distance between each pair of points.
[tex]\sqrt{(x2 - x1)^{2} + (y2 - y1)^{2} }= \\ \\\sqrt{(-4 - (-1))^{2} + (-1 - 4)^{2} }= \\\\\sqrt{-3^{2} + -5^{2} }= \\\\\sqrt{9 + 25 }=\\\sqrt{34 }=\\5.83[/tex]
Distance between each pair of points is: 5.83
The distance formula, derived from the Pythagorean theorem, is used to find the distance between two points. You subtract and square the x-coordinates, do the same with the y-coordinates, sum those results, and take the square root of the sum to get the distance.
Explanation:The distance formula in mathematics is used to determine the distance between two points in a coordinate plane. The formula is derived from the Pythagorean theorem and is represented as D = √[(x2-x1)² + (y2-y1)²]. Let's say we have two points A1(x1, y1) and A2(x2, y2).
Firstly, subtract the x-coordinates (x2 and x1) and then square the result. Secondly, subtract the y-coordinates (y2 and y1) and then square the result. Finally, add the values obtained in the first and second steps to get the square of the distance. To find the actual distance, take the square root of this sum.The final result gives you the distance between the two points in the cartesian plane.
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. A raffle prize of dollars is to be divided among 7x people. Write an expression for the amount of money that each person will receive.
Answer:
P/7x dollars.
Step-by-step explanation:
If the raffle prize is P dollars, then each person will receive P/7x dollars.
Answer with explanation:
Let total Prize money = $ P
Number of people into which this money is divided =7 x People
Amount of money that each person will Receive
[tex]=\frac{\text{Total Prize Money}}{\text{Number of people into which this money is divided}}\\\\=\frac{P\text{Dollars}}{7x}[/tex]
Algebra Probability PLEASE HELP***
You have 6 friends who want to go to a concert with you, but you only have room in your car for 2 of them. To avoid accusations of favoritism, you have your friends draw straws: There are 4 long and 2 short straws, and the short straws win. How many possible pairs of friends could be chosen in this way?
Answer: 2 friends/1 pair
Step-by-step explanation:
Mainly because if you do the math, a pair of friends is 2. Knowing that there is 2 short straws (Which if those are the ones that are chosen you get to go), and 4 long straws. Only 2 friends are going to draw the short straws.
Hope this helped :)
Answer:
15 possible pairs of friends could be chosen in this way.
Step-by-step explanation:
Given : You have 6 friends who want to go to a concert with you, but you only have room in your car for 2 of them. To avoid accusations of favoritism, you have your friends draw straws: There are 4 long and 2 short straws, and the short straws win.
To find : How many possible pairs of friends could be chosen in this way?
Solution :
Total number of friends = 6
The space in the car is for 2 person.
Since, the order doesn't matter we have to choose 2 people out of 6 so we apply combination.
As There are 4 long and 2 short straws, and the short straws win.
i.e. that 2 friends were chosen.
So, Possible ways to find the pairs of friends is [tex]^6C_2[/tex]
Solving,
[tex]^6C_2=\frac{6!}{2!(6-2)!}[/tex]
[tex]^6C_2=\frac{6\times 5\times 4!}{2\times 1\times 4!}[/tex]
[tex]^6C_2=3\times 5[/tex]
[tex]^6C_2=15[/tex]
Therefore, 15 possible pairs of friends could be chosen in this way.
Find the area of the kite QRST.
For this case we have that the area of the kite is formed by the ara of two triangles with the same base of[tex]9 + 9 = 18[/tex] meters and one with height 9 meters and another with height 6 meters.
So:
[tex]A = \frac {1} {2} b * h + \frac {1} {2} b * h\\A = \frac {1} {2} 18 * 9 + \frac {1} {2} 18 * 6\\A = \frac {1} {2} 162+ \frac {1} {2} 108\\A = 81 + 54\\A = 135 \ m ^ 2[/tex]
ANswer:
Option B
Answer:
135 m^2
Step-by-step explanation:
Gradpoint approved, good luck guys.
Need help with a math question
Answer:
x=7
Step-by-step explanation:
Equate the angles 7x-7 and 4x+14 and solve:
7x-7 = 4x+14
7x-4x = 14+7
3x = 21
x = 7
Answer:
x = 7
Step-by-step explanation:
Alternate interior angles are equal. Alternate interior angles look like these two angles.
7x - 7 = 4x + 14 Add 7 to both sides
7x - 7 + 7 = 4x + 14+7 Combine
7x = 4x + 21 Subract 4x from both sides
7x-4x = 4x - 4x + 21 Combine
3x = 21 Divide by 3
3x/3 = 21/3 Do the division
x = 7
Need help with this math question!!!!!!!!!
ANSWER
The vertex is (1,-3)
EXPLANATION
The given parabola has equation:
[tex] {y}^{2} + 6y + 8x + 1 = 0[/tex]
We group the variables to obtain:
[tex]{y}^{2} + 6y = - 8x - 1 [/tex]
We complete the square to get,
[tex]{y}^{2} + 6y + {3}^{2} = - 8x - 1 + {3}^{2} [/tex]
[tex] {(y+ 3)}^{2} = - 8x +8[/tex]
[tex] {(y+ 3)}^{2} = - 8(x -1)[/tex]
The vertex is of the parabola is (1,-3)
Answer:
(-1,-3)
Step-by-step explanation:
If h represents the number of hours the Sun was up today, which quantity is represented by the function ?
the number of minutes the Sun was up today
the number of hours the Sun was down today
the number of minutes the Sun was down today
the fraction of the time the Sun was up today
Let h = number of hours the Sun was up today.
There are 24 hours in one day.
So, we are looking at the fraction h/24.
Answer: The fraction of the time the Sun was up today.
The function that multiplies the number of hours the Sun was up (h) by 60 represents the number of minutes the Sun was up today.
Explanation:If h represents the number of hours the Sun was up today, to calculate the number of minutes the Sun was up, we would multiply h by 60, since there are 60 minutes in an hour. Therefore, the function that multiplies h by 60 will give us the number of minutes the Sun was up today. On the contrary, to find the number of hours the Sun was down today, we would typically take the total number of hours in a day, which is 24, and subtract h from it. To represent the fraction of the time the Sun was up today, we would use the ratio of h to 24, since there are 24 hours in a whole day. Thus, the correct quantity represented by the function when h is multiplied by 60 is the number of minutes the Sun was up today.
Kedar is comparing the costs of phone plans. For phone plan A, the cost is $15.00 to connect and then $0.02 per minute. For phone plan B, the cost is $4.69 to connect and then $0.08 per minute. For what usage does plan A cost the same as plan B? (Hint: Find total minutes and then convert to hours and minutes.)
3 h 2 min
2 h 42 min
3 h 12 min
2 h 52 min
Answer:
The answer is (D): 2 h 52 min
Step-by-step explanation:
write these equations separately as functions:
A(x)=15+0.02m
B(x)=4.69+0.08m
Since we want to find when they are equal, set them equal to each other:
15+0.02m=4.69+0.08m
simplifying this equation gives
10.31+0.02m=0.08m
subtract 0.02m from both sides
10.31=0.06m
divide both sides by 0.06
m=171.833 etc approximately equals 172 minutes
172 min/60=
2 hours and 52 min
Hope this helps!
Answer:
2 h 52 min
Step-by-step explanation:
Let m represent the number of minutes that will make the plans have equal cost. Equating the two plan costs, we have ...
15.00 + 0.02m = 4.69 + 0.08m
10.31 = 0.06 m . . . . . subtract 4.69+0.02m
10.31/0.06 = m = 171.8333... ≈ 172 . . . . minutes at equal cost
There are 60 minutes in an hour, so ...
172 minutes = 120 minutes + 52 minutes = 2 hours + 52 minutes
Plan A will cost the same as Plan B for 2 h 52 min of usage.
Julia opened a new flower shop, and her daily sales are modeled by f(x) = 2(1.25)x. Determine the rate of growth.
A.2%
B.125%
C.75%
D.25%
Answer:
D. 25%
Step-by-step explanation:
f(x) = 2 * (1.25)^x
This is in the form
y = a b^x
where b is 1 plus the growth rate
b = 1.25 = 1+growth rate
1.25 = 1 + growth rate
.25 = growth rate
25% = growth rate
The answer is D) 25%
Solve the inequality –3v – 2v > 35 for v.
Answer:
-7 > v OR vice-versa [v < -7]
Step-by-step explanation:
Combine like-terms [-5v > 35], then divide by -5.
NOTE: Since you are dividing by a negative, reverse the sign.
Answer:
[tex]{\huge \boxed{V<-7}}[/tex]
Step-by-step explanation:
Add similar into elements. Add the numbers from left to right.
-3v-2v=-5v
Simplify.
-5v>35
Multiply by -1 from both sides of equation.
(-5v)(-1)<35(-1)
Simplify.
35(-1)=-35
5v<-35
Divide by 5 from both sides of equation.
5v/5<-35/5
Simplify, to find the answer.
-35/5=-7
v<-7 is the correct answer.
I hope this helps you, and have a wonderful day!
Alicia needs to purchase carpet to cover a triangular space. The space has a base length of 10 ft. and a height of 6.4 ft.How many square feet of carpet does Alicia need to cover the space?
Answer:
32
Step-by-step explanation:
Alicia needs 32 square feet of carpet to cover the space.
What is area of triangular space?Area of triangular space is 1/2 * length * height.
Given, space has base length of 10 ft. and a height of 6.4 ft.
Using the formula,
Area of triangular space is 1/2 * length * height = 1/2 * 10 * 6.4
= 32 square feet
Hence , Alicia needs 32 square feet of carpet to cover the space.
To learn more about the triangular spaces ;
https://brainly.ph/question/26974154
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Kendra's water bottle contains 2 quarts of water. She wants to add drink mix to it, but the directions for the drink mix give the amount of water in fluid ounces. How many fluid ounces are in her bottle?
Answer: 64 fluid ounces
Step-by-step explanation:
See paper attached. (:
what is the location of maximum over the interval [-3,1.5] for the graphed function?
Answer:
56
Step-by-step explanation:
from observing the graph between x=-3 and x = 1.5, we can see that the highest most point of the graph (i.e the maximum) value occurs at x=-1.6, y = 56
Hence the maximum y-locatoin is 56
Answer:
B) 56
Step-by-step explanation:
Does anyone know the answer?
Answer:
When a number is halfway between two multiples of one thousand, round to "the larger multiple."
For example: If you have 852, the nearest thousand is 1000. So it should be round to 1000.
Answer:
rounded to the larger multiple.