Answer:
1. x
=
5
2
−
5
y
4
x=5/2-5y/4
2. x
=
15
4
−
5
y
8
x=15/4-5y/8
Step-by-step explanation:
Answer:
[tex]x=5[/tex]
[tex]y=-2[/tex]
Step-by-step explanation:
Given the system of equations [tex]\left \{ {{4x+5y=10} \atop {8x+5y=30}} \right.[/tex], you can use the Elimination Method to solve it.
Multiply the first equation by -1, add both equations and then solve for the variable "x":
[tex]\left \{ {{-4x-5y=-10} \atop {8x+5y=30}} \right.\\........................\\4x=20\\\\x=\frac{20}{4}\\\\x=5[/tex]
And finally, substitute the value of the variable "x" into any original equation and solve for the variable "y". Then:
[tex]4x+5y=10\\\\4(5)+5y=10\\\\20+5y=10\\\\5y=10-20\\\\y=\frac{-10}{5}\\\\y=-2[/tex]
Paul received a $12,000 loan from the bank the bank charges 6. 99% Do you eat interest-rate after four years how much money does Paul owe in the interest?
Answer:
$3355.20
Step-by-step explanation:
The formula for simple interest is ...
i = Prt
where P is the principal amount, r is the annual rate, and t is the number of years. Fill in the given values and do the arithmetic.
i = 12,000×0.0699×4 = 3355.20
Paul owes $3355.20 in interest.
Triangle ABC contains side lengths b = 3 inches and c = 7 inches. In two or more complete sentences describe whether or not it is possible for m ∠ B = 15°.
Explanation:
A triangle can be formed for b=3 and B=15° as long as side c is between 3 and 3/sin(15°) ≈ 11.59 inches in length. The limit for side c on the high end is that it is opposite a right angle. The limit for side c on the other end is that it is opposite a linear angle.
For the given length of side c, there are two possible triangles with b=3 and B=15°. (See attached.)
_____
For the given values of b and c, the largest possible value of B is the angle that puts side c opposite a right angle: B ≤ arcsin(3/7) ≈ 25.3769°
smart people help me please
Answer:
X=5
Step-by-step explanation:
1: 90 plus 50 because there is a 90 degree angle
2: 8x=140 and then you divide by 8
3: x=5 I hope I helped you and I hope you have a wonderful day
Answer:
X=5
Step-by-step explanation:
8x+50=90
8x=40
x=5
please help!
The total number of fungal spores can be found using an infinite geometric series where a1 = 11 and the common ratio is 2. Find the sum of this infinite series that will be the upper limit of the fungal spores.
465
280
The series is divergent
125
Answer:
The series is divergent
Step-by-step explanation:
An infinite geometric series with a common ratio greater than 1 does not converge to a sum. The series is divergent.
Use the graph of each polynomial function to find the factored form of the related polynomial. Assume the polynomial has no constant factor.
B.
What are the zeros of this function? (2 points) _____, _____
What is the factorization of the polynomial? (2 points)
Answer:
zeros: x = 1, x = 3y = (x -1)(x -3)Step-by-step explanation:
The zeros are the x-values where the graph crosses the x-axis (y=0; That's why it is called a "zero.") The graph crosses y=0 at x=1 and x=3.
A factor of the polynomial is zero at each zero. Hence the factorization is ...
y = (x -1)(x -3)
The first factor is zero at x=1; the second factor is zero at x=3.
Which absolute value function, when graphed, will be narrower than the graph of the parent function, f(x) = |x|? f(x) = |x| – 3 f(x) = |x + 2| f(x) = 0.5|x| f(x) = 4|x|
Answer:
f(x) = 4|x|
Step-by-step explanation:
the graph of f(x) = |x|, looks like a "V"
if we want to make the graph "narrower", what we are doing is really trying to make the slope steeper (i.e more vertical) so that the opening of graph at the top of the "V" becomes smaller.
in order the make the slope steeper, we have to multiply the x-term of the function (in this case |x|) by any factor that is greater than 1. (multiplying by factors smaller than 1 will make the slope more gentle and hence making the "V" wider).
The only choice that shows the original function multiplied by a number that is greater than 1 is f(x) = 4|x|
Answer:
D
Step-by-step explanation:
Sam recorded the number of points she scored on each weekly test out of the number of points possible for the test. In which two subjects did Sam score the lowest? Choose exactly two answers that are correct. Language Arts History Science Math Sam's Test Scores Math 2225 Science 1920 Language Arts 84100 History 910
Makes no sense.
He scored the lowest in History and Science. Compare the numbers to help you prepare the obvious chart.
Sam scored the lowest in Language Arts with 84% and Math with 88%.
To determine this, We need to calculate Sam's percentage scores for each subject:
Math: [tex]\frac{25}{25}*100[/tex] = 88%Science: [tex]\frac{19}{20}*100[/tex] = 95%Language Arts: [tex]\frac{84}{100} *100[/tex] = 84%History:[tex]\frac{9}{10}*100[/tex] = 90%Based on these calculations, the two subjects where Sam scored the lowest are Language Arts (84%) and Math (88%).
complete question:
Sam recorded the number of points she scored on each weekly test out of the number of points possible for the test.In which two subjects did Sam score the lowest?Choose exactly two answers that are correct. Sam's Test Scores in Math 22/25 ,in Science 19/20 ,in Language Arts 84/100 ,in History 9/10.
Suppose that the following group of values has been entered into the TVM Solver of a graphing calculator: N=300; I%=8.7; PV=115000; PMT=–941.56172; FV=0; P/Y=12; C/Y=12; PMT:END. Which of the following uses of the "bal(" function will give the balance on the loan in question after 13 years?
A. bal(13)
B. bal(144)
C. bal(156)
D. bal(12)
Answer:
C. bal(156)
Step-by-step explanation:
In 13 years, there are ...
13 × 12 = 156 . . . months.
So, the balance after the 156th payment is desired. The bal(156) function of a TI-84 graphing calculator will give that value.
Answer:
bal (156) is the right APEX answer. hope this helps!!
PLEASE HELP
How can I find the measure of Angle A?
Answer:
∠A ≈ 58.1°
Step-by-step explanation:
Since the triangle is right use the tangent ratio to solve for ∠A
tanA = [tex]\frac{opposite}{adjacent}[/tex] = [tex]\frac{8.2}{5.1}[/tex], hence
A = [tex]tan^{-1}[/tex] ( [tex]\frac{8.2}{5.1}[/tex] ) ≈ 58.1°
Find the inverse of h(x) = (2x + 6)/5
Answer:
h^-1(x) = (5x - 6)/2
Step-by-step explanation:
To find the inverse of h(x) = (2x + 6)/5, we need to solve for 'x':
y = (2x + 6)/5 ⇒ 5y = 2x + 6 ⇒ 5y - 6 = 2x ⇒ x = (5y - 6)/2
Therefore, h^-1(x) = (5x - 6)/2
Answer:
(5x-6)/2
Step-by-step explanation:
h(x) = (2x + 6)/5
y = (2x + 6)/5
To find the inverse, exchange x and y
x = (2y+6) /5
Then solve for y
Multiply each side by 5
5x = (2y+6)/5*5
5x = 2y+6
Subtract 6 from each side
5x-6 = 2y+6-6
5x-6 = 2y
Divide by 2
(5x-6)/2 = 2y/2
The inverse is
(5x-6)/2
Which of the following values are in the range of the function graphed below? Check all that apply
Please help! - Will give the answer "brainliest!"
Option: D is the correct answer.
The values that lie in the range of the function which is graphed is:
D. 1
Step-by-step explanation:Range--
The range of the function is the possible values which are attained by the function.
i.e. the values of y as is obtained corresponding to different x as in the domain.
By looking at the graph of the function is defined over the interval [-2,1] and the graph passes through (0,1) and is parallel to the x-axis.
Hence, the range of the function is: 1
( Since it takes just a single value i.e. 1 over the interval [-2,1] )
Woodland Mound Park sells annual visitor passes for $12.50. Last year the park raised $53,500 in annual visitor pass sales. How many annual visitor passes were sold?
Answer:
4280 passes were sold
Step-by-step explanation:
The unknown we are looking for the number of passes that were sold. We don't know how MANY were sold, but we do know that the cost of ONE is 12.50. We represent the number of passes at that price per pass as
12.50x
We also know that money earned from the sale of this unknown number of passes came to 53,500. Our equation then becomes
12.50x = 53,500
Solving for x, we divide both sides by 12.50 to get that
x = 4280
Final answer:
To find the number of annual visitor passes sold at Woodland Mound Park, divide the total sales ($53,500) by the price per pass ($12.50), resulting in 4,280 passes sold.
Explanation:
The question asks how many annual visitor passes were sold at Woodland Mound Park last year if each pass costs $12.50 and the total amount raised from pass sales was $53,500. To find the number of passes sold, you'll need to divide the total sales by the price per pass. Here is the step-by-step calculation:
Identify the total revenue from sales: $53,500.Identify the price of one annual visitor pass: $12.50.Divide the total revenue by the price per pass to get the quantity sold: $53,500 / $12.50 = 4,280.Vlad spent 20 minutes on his history homework and then completely solved x math problems that each took 2 minutes to complete. What is the equation that can be used to find the value of y
Answer:
y = 2x + 20
Step-by-step explanation:
2 * x is the number of minutes from the math problems
20 is the number of minutes for the history homework
Answer:
y= 2x=20
Step-by-step explanation:
the number of bacteria growing in an incubator culture increases with time according to b(x)=8500(3)^x where x is the time in days. After how many days will the number of bacteria in culture be 2,065,500?
Answer:
5 days
Step-by-step explanation:
Put the given number in the formula and solve for x.
2065500 = 8500·3^x
243 = 3^x . . . . . . . . . . . divide by 8500
log(243) = x·log(3) . . . take logarithms
log(243)/log(3) = x = 5 . . . . divide by the coefficient of x
After 5 days, the number of bacteria in culture will be 2,065,500.
Which of these expressions will give the unpaid balance after 6 years on a $90,000 loan with an APR of 7.2%, compounded monthly, if the monthly payment is $708.61?
A. 90,000(1+0.072)^72+708.61[1-(1+0.072)^72/0.072]
B. 90,000(1+0.006)^6+708.61[1-(1+0.006)^6/0.006]
C. 90,000(1+0.006)^72+708.61[1-(1+0.006)^72/0.006]
D. 90,000(1+0.072)^6+708.61[1-(1+0.072)^6/0.072]
Answer:
none of the expressions shown is correct
The appropriate expression is ...
90,000(1+0.006)^72+708.61[(1-(1+0.006)^72)/0.006] . . . best matches C
Step-by-step explanation:
The formula used to calculate the remaining balance is ...
A = P(1 +r)^n +p((1 -(1 +r)^n)/r) . . . . . note the parentheses on the fraction numerator
In this formula, r is the monthly interest rate: 7.2%/12 = 0.006, and n is the number of monthly payments: 6×12 = 72. Putting these values into the formula along with the loan amount (P=90,000) and the payment amount (p=708.61) gives ...
A = 90,000(1.006)^72 +708.61((1 -(1.006)^72)/0.006)
A = 74,871.52
Answer: the answer is
Step-by-step explanation:
Answer:
Step-by-step explanation:
squared or cubed is indicated to the top right of a number - what does 3/2 stand for? Is it a number cubed? Or squared?
Answer:
Step-by-step explanation:
3/2 is a power of 1.5 or equivalently 1 1/2. This is another way to write a radical.
[tex]x^\frac{3}{2}=\sqrt[2]{x^3}[/tex]
Given the following linear function identify the slope in the Y intercept of the function
Answer:
Choice #2
Step-by-step explanation:
Your linear function is in the slope-intercept form of a line, y = mx + b, where m is the value of the slope, and b is the value of the y-intercept. The number in the m position in your equation is 1/6, and thee number in the b position in your equation is 7. So the second choice is the one you want.
Which function has two x-intercepts, one at (0,0) and one at (4,0)?
f(x) = x(x - 4)
f(x) = x(x + 4)
f(x) = (x - 4)(x - 4)
f(x) = (x + 4)(x + 4)
Answer:A
Step-by-step explanation:
Find the solution(s) to the system of equations. Select all that apply
y=x^2-1
y=2x-2
Step-by-step explanation:
y = x^2 - 1
y = 2x - 2
x^2 - 1 = 2x - 2
x^2 - 2x + 1 = 0
(x - 1)^2 = 0
x = 1
Because x = 1 the answer must be D (1, 0).
Answer:
(1,0)
Step-by-step explanation:
Replace x values and y values with the answer choices.
[tex]y=(1)^2- 1 = 0[/tex]
[tex]y= 2(1)-2=0[/tex]
Since the coordinate pair [tex](1,0)[/tex] it is safe to assume that D will be the correct answer.
Use the graph to confirm that the solution is (1,0)
The blue line intersects at (1,0), so the solution for the system of equations is (1,0)
If tan x° = a divided by 4 and cos x° = 4 divided by b what is the value of sin x°? (1 point) \
Answer:
Sin x = a / b.
Step-by-step explanation:
The opposite side =a and the adjacent side = 4 (because tan x = a/4.
Cos x = 4/b so the hypotenuse = b ( because Cos = adjacent /hypotenuse.
So sin x = opposite /hypotenuse = a / b.
Answer:
sin x° = a divided by b is the answer
Step-by-step explanation:
I got 100% on the test!
In 1950, scientists estimated a certain animal population in a particular geographical area to be 6,400. In 2000, the population had risen to 7,200. If the animal population experiences the same percent increase over the next 50 years, what will the approximate population be?
A) 8,000
B) 8,100
C) 8.400
D) 8.600
B) The estimated animal population in 2050, given the same percent increase from 1950 to 2000, will be approximately 8,100.
The percent increase from 1950 to 2000 = (New Population - Original Population) / Original Population x 100%
In this case, it is:
(7200 - 6400) / 6400 x 100%
= 12.5%
The population in 2050 under the same percent increase, we apply this percentage to the population in 2000:
7200 x (1 + 12.5/100) = 7200 x 1.125 = 8100
The expected population in 2050 is 8,100.
Thus, the correct answer is B) 8,100.
To calculate the percent increase over 50 years, we first find the absolute increase from 1950 to 2000, and then determine the percent increase relative to the initial value in 1950.
Next, we apply that percent increase to the population in 2000 to predict the population in 2050.
Calculate the Absolute Increase
The increase in the animal population from 1950 to 2000 is:
[tex]\[7200 - 6400 = 800.\][/tex]
Calculate the Percent Increase
To find the percent increase over the period from 1950 to 2000, use the following formula:
[tex]\[ \frac{{\text{increase}}}{{\text{initial value}}} \times 100 = \frac{{800}}{{6400}} \times 100 = 12.5\%. \][/tex]
Thus, the population increased by 12.5% over 50 years.
Apply the Percent Increase to Predict the 2050 Population
Given the 12.5% increase, the expected increase in population from 2000 to 2050 would be 12.5% of 7200:
[tex]\[ 0.125 \times 7200 = 900. \][/tex]
Thus, the predicted population in 2050 is:
7200 + 900 = 8100.
Question :
In 1950, scientists estimated a certain animal population in a particular geographical area to be 6,400. In 2000, the population had risen to 7,200. If the animal population experiences the same percent increase over the next 50 years, what will the approximate population be?
A) 8,000
B) 8,100
C) 8.400
D) 8.600
Help with this question, please! I don't understand!
Answer:
(1, -5); (4, 3)
Step-by-step explanation:
We generally orient maps with north at the top. This problem presumes that orientation along with a grid having units of 1 mile. "Town Center" is taken to be the origin of the grid. As is usually the case, left/right coordinates are indicated first in an ordered pair, with up/down coordinates being indicated second.
Then the warehouse location 8 miles south and 3 miles west of Town Center is considered to have coordinates of (-3, -8). Movement 3 miles north and 4 miles east is considered to be translation by (4, 3). This translation vector is the answer to the second part of the problem.
The answer to the first part of the problem is the sum of the starting position and the translation:
(-3, -8) +(4, 3) = (1, -5)
The truck's final position is (1, -5). The translation vector to get it there is (4, 3).
What must be done to each side of the equation to find the value of n?
-4n = 696
A)
add -4
B)
multiply by -4
C)
subtract -4
D)
divide by -4
Answer:
Divide both sides by -4.
Step-by-step explanation:
If you divide both sides by -4, you'll get the answer n=−174.
Please mark brainliest!
Answer:
D
Step-by-step explanation:
-4n = 696
What must be done to each side of the equation to find the value of n?
Divide both sides by -4 to find the value of n
∴ -4n/-4 = 696/-4
n = -174
A squar has a premeter of 12x+52 units which expression represents the side length of the square in units?
The square had a side length of 3x+13.
Because the perimeter is 12x+52, you have to divide that by each of the four sides.
Which equation can be used to solve for the unknown number? Seven less than a number is thirteen.
n-7=13
7-n=13
n+7=13
n+13=7
Answer:
n-7=13
Step-by-step explanation:
We need to find an equation that represents the expression: "Seven less than a number is thirteen".
It means that a number minus 7 equals 13. So, the correct option is: n-7=13
Bonus: Solving for 'n' we have that n=20.
So, Seven less than 20 equals 13!!
Answer:
the anwser is: n-7=13
Step-by-step explanation:
i took the test:)
What is the slope and y-intercept form for : y=-2/4x+5 PLEASE HELP IT WOULD ME SO MUCH THANK YOU!!!!
Answer:
y = -1/2x +5
Step-by-step explanation:
Slope-intercept form is ...
y = mx + b
Matching this to the equation you have, you see that ...
m = -2/4 = -1/2
b = 5
The equation is already in slope-intercept form. The fraction that is the slope can be reduced, but that is not essential to the form.
Hiram raises earthworms. In a square of compost 4 ft by 4 ft, he can have 1,000 earthworms. How many earthworms can he have if his square of compost has a side length that is five times longer?
A.) 20,000
B.) 25,000
C.) 100,000
D.) 5,000
Please be original!!! I am torn between B and D. THANKS!
Answer:
The answer is D: 5,000
Step-by-step explanation:
That is the easiest question to solve. Good luck!
The number of earthworms he have if his square of compost has a side length that is five times longer is 5000.
How many earthworms can he have?
The first step is to determine the number of earthworms in a compost with a side length of 1.
1000 / 4 = 250
Number of earthworms with side length five time longer : (4 x 5) x 250 = 5000
To learn more about multiplication, please check: https://brainly.com/question/13814687
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The Substitution Property of Equality states that if m<2+m<3=m<5 and m<2=25, then _____ ____ m<5
Step-by-step explanation:
[tex]m\angle2+m\angle3=m\angle5\ and\ m\angle2=25,\ then\ 25+m\angle3=m\anlg5[/tex]
Insert 25 instead of m<2 into the equation
Answer:
25 + m∠3 = m∠5
Step-by-step explanation:
Substitution property of equality states that,
If a + b = c and b = e ⇒ a + e = c
Given,
[tex]m\angle 2 + m\angle 3 = m\angle 5[/tex] and [tex]m\angle 2 = 25[/tex]
By substituting the value of m∠2 in first equation,
[tex]25 + m\angle 3 = m\angle 5[/tex]
Hence, the missing terms is '25 + m∠3'
Luis has saved $6. He doubles the amount he saves each week.Does this represent an exponential function?Complete: this______ represent an exponential function , because his savings increase by a constant______. Thank you so much in advanced ?
Answer:
This does represent an exponential function , because his savings increase by a constant rate
Step-by-step explanation:
Let
x -----> the number of weeks
y ----> the amount saved
In this problem we have a exponential function of the form
[tex]y=a(b)^{x}[/tex]
where
a is the initial value
b is the base
r is the rate of change
where
[tex]a=\$6[/tex]
[tex]r=100\%=100/100=1[/tex] ---- because he doubles the amount each week
[tex]b=1+r[/tex] ----> [tex]b=1+1=2[/tex]
substitute
[tex]y=6(2)^{x}[/tex]
therefore
This does represent an exponential function , because his savings increase by a constant rate
A spinner with six sections labeled A through F is spun. What is the probability of spinning the letter labled D?
Enter your answer as a fraction, in simplest form, in the box.
Answer:
1/6
Step-by-step explanation:
I guess we are to assume each is equally likely. There a 6 possible outcomes and one D so the answer is 1/6