Answers
Related Questions
solve 7d + d - 4d - 7 - 5d
Answers
1, Simplify 7d+d-4d-77d+d−4d−7 to 4d-74d−7
4d-7=5d4d−7=5d
2.Subtract 4d4d from both sides
-7=5d-4d−7=5d−4d
3. Simplify 5d-4d5d−4d to dd
-7=d−7=d
4. Switch sides
d=-7d=−7
5. so your answer would be -7
Help pleeeeease
Theo deposited $1,250 in a savings account that pays 6% interest, compound quarterly. What was his balance at the end of the second quarter after the interest had been added?
A. $1,270.31
B. $1,270.65
C. $1,290.62
D. $1,287,78
Please explain your answer clearly! and explain how you got it!
Answers
The interest is compounded quarterly, or 4 times per year. That means at the end of each quarter year (3 months), he gets 3-months worth of interest added to the principal amount.
Since the interest is added each quarter, and since the yearly interest rate is 6%, the interest earned in 1 quarter is 6%/4 =1.5%. In 1 quarter (3 months), he earns 1.5%.
Start with $1250.
At the end of the first quarter, he earned 1.5% interest.
$1250 + 1.5% * $1250 = $1250 + 0.015 * $1250 = $1250 + $18.75 =
$1268.75
At the end of the first quarter he now has $1268.75.
Now he will earn interest for the second quarter.
He starts with $1268.75 and will earn 1.5% interest on that.
We do the same calculation we did above, but we start with $1268.75.
$1268.75 + 1.5% * $1268.75 = $1268.75 + 0.015 * $1268.75 = $1268.75 + $19.03 = $1287.78
The answer is $1287.78
Each quarter=3 months
So balance at the end of the second quarter means the balance after 6 months
The formula to find the balance is
A=p (1+r/k)^kt
A the balance?
P initial deposited 1250
R interest rate 0.06
K compounded quarterly 4
T time 6months/12months
Plug in the formula
A=1250 (1+0.06/4)^(4×(6/12))
A=1250 (1+0.06/4)^(2)
A=1287.78
So the answer is d
Hope it helps!
What’s he hypotenuse, x, if ( 20, 21,x) is a Pythagorean triple?
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Answer:
B) - 29
Step-by-step explanation:
The function f(x) = ax^3 -x^2 + bx -24 has three factors. Two of these factors are x-2 and x+4. Determine the values of a and b, then determine the other factor. (My Nelson Advanced Functions Grade 12 book chapter 3)
Please help :)
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The roots of any equation, always satisfies that equation.
Values of , a = - 2 and b = 22
Other factor of given function is (x - 3/2)
The given function [tex]f(x) = ax^3 -x^2 + bx -24[/tex]
Since, (x - 2) and (x + 4) are factors of given function
Therefore, x = 2 and x = -4 satisfies the given function.
[tex]f(2)=8a-4+2b-24=0\\8a+2b=28\\\\f(-4)=-64a-16-4b-24=0\\-64a-4b=40\\-16a-b=10[/tex]
Now , solving above two equation by elimination method
We get, a = -2 and b = 22
So, [tex]f(x) = -2x^3 -x^2 + 22x -24[/tex]
To find other factors , we divide above function by multiplication of (x - 2)(x+4).
So we get other factors, (x - 3/2)
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Write the first 4 terms in the sequence defined by the explicit rule f(n)=n^2 - 5 *n^2 means n squared
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Assuming, n = 0 is the starting value.
1st term is when n = 0:
f(0) = (0)^2 - 5 = 0 - 5 = -5
2nd term: f(1) = (1)^2 - 5 = 1 - 5 = -4
3rd term: f(2) = (2)^2 - 5 = 4 - 5 = -1
4th term: f(3) = (3)^2 - 5 = 9 - 5 = 4
Therefore, the first 4 terms are: -5, -4, -1, 4.
Is it possible for two linear functions whose graph are parallel to have the same y-intercept
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The table shows the pricing for four different types of gasoline. Type Cost A $20.20 for 10 gal B $26.04 for 12 gal C $28.14 for 14 gal D $30.45 for 15 gal Which type costs the least per gallon?
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Type B: $$26.04 ÷ 12 gal = $2.17 per gal
Type C: $ 28.14 ÷ 14 gal = $2.01 per gal
Type D: $30.45 ÷ 15 gal = $2.03 per gal
Type B costs less per gallon.
Hope this helps!!
The bottom answer is incorrect
The answer is C.$28.14 for 14 gal
(6v^3+42v)/(2v^2+26v+84)
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_______________________________________________
The simplied version is:
_______________________________________________
" [tex] \frac{3v(v^2+7)}{(v^2+13v+42)} [/tex] " ;
or; write as: " [tex] \frac{3v(v^2+7)}{(v+7)(v+6)} [/tex] " .
_______________________________________________
Explanation:
_______________________________________________
Given:
_______________________________________________
" [tex] \frac{6v^3 +42 v}{2v^2 +26v + 84} [/tex] " ;
_______________________________________________
→ Factor out a "6v"[tex] \frac{6v(v^2+7)}{2(v^2+13v+42)}[/tex] in the "numerator"; & factor out a "2" in the denominator; as follows:
____________________________________
→ [tex] \frac{6v(v^2+7)}{2(v^2+13v+42)}[/tex] ;
____________________________________
→ " [tex] \frac{3v(v^2+7)}{(v^2+13v+42)} [/tex] " ;
______________________________________________
or; factor out the "denominator" :
______________________________________________
→ (v² + 13v + 42) = (v+7)(v+6) ;
______________________________________________
and write as:
______________________________________________
→ " [tex] \frac{3v(v^2+7)}{(v+7)(v+6)} [/tex] " .
______________________________________________
Problem page two trains leave stations 390 miles apart at the same time and travel toward each other. one train travels at 65 miles per hour while the other travels at 85 miles per hour. how long will it take for the two trains to meet
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You are playing a video game. For each diamond you collect, you earn 80 points. You also earn 100 bonus points by completing the level in less than 2 minutes. You need to earn more than 1220 points to continue on to the next level. Write and solve an inequality that represents the numbers dd of diamonds you must collect in less than 2 minutes to advance to the next level.
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Given
For each diamond you collect, you earn 80 point
earn 100 bonus points by completing the level in less than 2 minutes.
earn more than 1220 points to continue on to the next level
Find the inequality that represents the numbers dd of diamonds you must collect in less than 2 minutes to advance to the next level.
To proof
As given in the question
For each diamond earn point = 80
bonus points by completing the level in less than 2 minutes = 100
earn more than 1220 points to continue on to the next level
Let us assume that the number of diamond = d
The inequality written in the form
we get
[tex]80d + 100 \geq 1220[/tex]
now solving the above equation
[tex]80d \geq1120[/tex]
[tex]d \geq14[/tex]
Thus the numbers of diamonds you must collect in less than 2 minutes to advance to the next level be 14.
Hence proved
Which statement is true about regular exercise? 1.It decreases your resting heart rate.
2.It decreases your lung capacity.
3.It decreases your intelligence.
4.It increases your blood pressure.
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Answer:
got correct on edmentum mastery test, hope this helps
A bakery sells packages of 6 cupcakes for $10. If the bakery starts selling the cupcakes in packages of 12, how much would you expect a packet of 12 to cost?
Answers
Hope I helped good luck have a nice nite and I hope u enjoy the rest of ur weekend
A hummingbird can travel up to 15 meters per second. What is the hummingbird's speed in miles per hour? 1 mile ≈ 1609 meters Enter your answer, as a decimal to the nearest tenth, in the box.
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there are 3600 seconds per hour
15 * 3600 = 54000 meters per hour
54000/ 1609 = 33.56
round to 33.6 miles per hour
The speed of Hummingbird's in miles per hour is 8,153.6463 mph.
What is speed-distance formula?Speed = Distance/Time – This tells us how slow or fast an object moves. It describes the distance travelled divided by the time taken to cover the distance. Speed is directly Proportional to Distance and Inversely proportional to Time. Hence,Distance = Speed X Time, and
Time = Distance / Speed, as the speed increases the time taken will decrease and vice versa.Given:
A hummingbird can travel up to 15 meters per second.
As,
1 m/s= 2.23694 mph
So, 15 m/s= 15 * 2.23694
= 8,153.6463 mph
Hence, the speed in mph is 8,153.6463.
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Which statement is true? @jimthompson5910
Answers
It is in the form y = mx+b
m = 0.5 is the slope
b = 1.3 is the y intercept
The slope of 0.5 indicates that each time x increases by 1, the value of y will increase by 0.5 (since 0.5 = 0.5/1)
Translate this into the context of the problem and that means "for every extra person attending (x), the prep time increases by roughly 0.5 hours" which is what choice C is saying, well a paraphrase of it anyway.
Answer: Choice C
4(2x - 5) + 15 = 11 Write the steps you will use to solve the equation and explain each step.
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Second, add 15 to 8x-20
Third, that would equal 8x-20+15=11
Fourth, 15+-20= -5
Fifth, 8x-5=11
Sixth, add +5 to -5 and +5 to 11= 8x=16
Last, do 8x/8x and 16/8x
The answer is x=2
8x+15=11+20
8x+15=31
8x=31-15
8x=16
X=2
First, add 20 to both sides
Simplify
Subtract 15 from both sides
Simplify
Divide 8 from both sides
Simplify
[2/(n+2)] - (3/n+2) = 5
Solve by u-substitution
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An isosceles triangle has a perimeter of 82 cm. The lengths of the legs of the triangle are represented by (3x +2) and (5x-14). Find the length of the base of the triangle.
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The triangle's base measures 82 in length.
What is the Permeter of a traingle?
The perimeter of any polygon is equal to the sum of its side lengths. Considering a triangleSum of the three sides equals the perimeter.Units are always a part of the ultimate response. The final solution should be given in centimeters if the triangle's sides are in that unit.According to our question,
IF (3X+2) & (5X-14) ARE THE EQUAL SIDES THEN
3X+2=5X-14
-2X=-16
X=-16/-2
X=8
THUS THE EQUAL SIDES ARE
3*8+2=24+2=26
5*8-14=40-14=26
SO
82=BASE+26+26
BASE=82-52
B=30 CM.
30+26+26=82
82=82
Hence we can say that the triangle's base measures 82 in length.
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Final answer:
The lengths of the two legs of the isosceles triangle are equal, and by setting the expressions for these lengths equal to each other and solving for 'x', we find that the length of the base of the triangle is 30 cm.
Explanation:
The perimeter of an isosceles triangle is given as 82 cm. The two legs are represented by the expressions (3x + 2) and (5x - 14). Since it is isosceles, these two expressions must be equal because the lengths of the legs are equal, as stated by the theorem.
First, set the expressions equal to each other to find the value of 'x':
3x + 2 = 5x - 14
We then solve for 'x' by subtracting 3x from both sides and adding 14 to both sides:
16 = 2x
x = 8
After finding 'x', we can determine the length of one of the equal sides by substituting 'x' back into either of the original expressions:
Length of one side = 3x + 2 = 3(8) + 2 = 26 cm
Since we have two sides of the same length, we multiply by 2 to find the total length of the two legs:
Total length of two legs = 26 cm imes 2 = 52 cm
To find the length of the base, subtract the total length of the two legs from the perimeter:
Length of the base = 82 cm - 52 cm = 30 cm.
Therefore, the length of the base of the isosceles triangle is 30 cm.
First four terms of f(n)=3n-1
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First term,
n=1
f(1)=3(1)-1
=2
Second term,
n=2
f(2)=3(2)-1
=5
Third term,
n=3
f(3)=3(3)-1
=8
Fourth term,
n=4
f(4)=3(4)-1
=11
Therefore, the first four terms are 2,5,8,11
The first four terms of the function f(x) = 3n - 1 are 2, 5, 8, and 11.
Given,
f(n) = 3n - 1
We need to find the first four terms.
What is a function?A function has an input and an output.
Example:
f(x) = x + 1
x = 1,2,3 are inputs.
f(1) = 1 + 4 = 5
f(2) = 2 + 4 = 6
f(3) = 3 + 4 = 7
5, 6, and 7 are the outputs.
We have,
f(n) = 3n - 1
We can assume that the first four terms can be found with n= 1,2,3,4.
f(1) = 3 x 1 - 1 = 3 - 1 = 2
f(2) = 3 x 2 - 1 = 6 - 1 = 5
f(3) = 3 x 3 - 1 = 9 - 1 = 8
f(4) = 3 x 4 - 1 = 12 - 1 = 11
Thus the first four terms of the function f(x) = 3n - 1 are 2, 5, 8, and 11.
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What is the greatest common factor for 96, 72 48?
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4. Making financial decisions is fairly rare; most people make only a few during their lifetime. True False
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How to find the slope intercept form of the equation using another line in slope intercept form and a point for the line?
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Answer:
IF the other line is parallel you use the same slope (m) as the line given then find the y intercept (b) by plugging in the (x,y) and m into y = mx + b
Step-by-step explanation:
The sum of two numbers is 39 . the smaller number is 13 less than the larger number. what are the numbers
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13+26=39 and 26-13=13
The required numbers are given as 26 and 13.
What are equation models?The equation model is defined as the model of the given situation in the form of an equation using variables and constants.
here,
let the number be x and y,
According to the question,
x + y = 39 - - - - (1)
x = y + 13 - - - - - (2)
Put value from equation 2, in equation 1
y + y + 13 = 39
2y = 39 - 13
y = 26/y
y = 13
Now,
x = 13 + 13
x = 26
Thus, the required numbers are given as 26 and 13.
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Given a standard deck of cards, what is the probability of drawing a face card, given that it is a red card?
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Teds needs a average of at least 70 on his three history test. he has already scored 85 and 60 on two test. what is the minimum grade ted needs on his third test
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85 + 60 + 65 = 210
210 divide by three (as there are three tests) = 70
Geometry help please
2 attachments, 1 question
Answers
1. definition of supplementary angles
2. 115
3. definition of acute angle
Supplementary angles mean that the angle will add up to 180°. In this case, that means PQR + RQS= 180° where PQR=115°
So the RQS would be 180-115=65° Acute angle is when the angle is <90° so RQS is acute angles
Using the figure below A) What is the length of A'B'? B) Show your work/ explain how you got your answer. Question 10 options:
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B
C
D
multiply them by 6 and add 3.5 to your answer and youll get the right one
1. solve the proprotion k/5=5/125.
a) 1/25
b) 25
c) 5
d) 1/5
2. round the answer of 0.4x-0.2=2.5 to two decimal places.
a) -2.70
b) -6.75
c) -5.75
d) -3.25
3. what is the y-intercept of 4x-3y=-12?
a) -4
b) 3
c) -3
d) 4
Answers
First reduce 5/125.
5/125 = 1/25
Now you can cross multiply.
25k = 5
k = 5/25
k = 1/5
d) 1/5
2. round the answer of 0.4x-0.2=2.5 to two decimal places.
0.4x=2.7
x = 6.75
b) -6.75
3. what is the y-intercept of 4x-3y=-12?
The y-intercept is when x = 0.
4(0) - 3y = -12
-3y = -12
y = 4
d) 4
if angle A has a measurement of 42 degree and is complementary to angle B whats the measurement of angle B
Answers
This means that:
angles A + angle B = 90
42+angle B = 90
angle B = 90-42 = 48 degrees
On an uphill hike, Ted climbs at a rate of 3 miles an hour. Going down, he runs at a rate of 5 miles an hour. If it takes him 40 minutes longer to climb up than run down, what is the total length of Ted's hike?
Answers
So the other guy has the right work but at the end he messed up. The real answer is 10 miles.
By establishing the relationship between Ted's uphill and downhill travel times, we can set up an equation to solve for the one-way distance D of the hike. We find that the one-way distance D is 5 miles, making the total length of the hike 10 miles.
Explanation:On an uphill hike, Ted climbs at a rate of 3 miles an hour. Going down, he runs at a rate of 5 miles an hour. If it takes him 40 minutes longer to climb up than run-down, we need to figure out the total length of Ted's hike.
First, let's establish the relationship between the times it takes Ted to hike up and run down the hill. If T is the time it takes to run down, then the time to hike up is T + 40/60 hours (since 40 minutes is two-thirds of an hour).
Let D be the distance of the hike one way. As Ted climbs up at a rate of 3 miles per hour, the uphill time is D/3. Running down at a rate of 5 miles per hour, the downhill time is D/5. We can set up the following equation:
D/3 = D/5 + 40/60
Multiplying through by 15 to eliminate fractions, we get:
5D = 3D + 10
This simplifies to:
2D = 10
Dividing by 2:
D = 5 miles
Since the total hike involves going up and then down the same distance, the total length of the hike is:
Total Length = 5 miles + 5 miles = 10 miles.
the height of a triangle is 4 times its base. if he are of a triangle is 200cm, what is the height
Answers
A = 200
h = 4b
200 = (b(4b) / 2
200 * 2 = b * 4b
400 = 4b^2
400 / 4 = b^2
100 = b^2
sqrt 100 = b
10 = b ..... base is 10 cm
h = 4b
h = 4(10)
h = 40 <=== height is 40 cm