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Marianna [84]
3 years ago
10

Question Of The Day: If Margaret took a quiz and got a 72% on it, and then she got a 80 on the second one, what is her average g

rade?
Mathematics
2 answers:
topjm [15]3 years ago
3 0
Well first you add them together so 72+80=152 and then you devide by two which would make the average grade 76. hope this helps:)
Vinil7 [7]3 years ago
3 0
Her Average Is A 76%. You Would Need To Add The 2 Percentages Together & Come Up With 152%. You Would Then Divide That 152% By 2 (Representing The 2 Previous Percentages). You Would Then End Up With 76% As An Average Percentage
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The perimeter of the trapezoid-shaped window frame is 23.59 feet. Write and solve an equation to find the unknown side length x
krok68 [10]

Answer:

5.62 + 3.65 + 5.62 + x = 23.59

x = 8.7 ft

Step-by-step explanation:

Perimeter of the trapezoid-shaped window = sum of all the sides of the window frame

Thus, the equation to find the unknown side length, x, would be:

✔️5.62 + 3.65 + 5.62 + x = 23.59

Solve for x

14.89 + x = 23.59

Subtract 14.89 from each side

14.89 + x - 14.89 = 23.59 - 14.89

✔️x = 8.7 ft

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3 years ago
Please help me: A cereal company fills boxes with 16 ounces of cereal. The acceptable percent error in filling a box is 2.5%. Fi
bagirrra123 [75]
16.4 would be the greatest  and 15.6 would be the least due to 2.5% equaling 0.4 and adding and subtracting it from 16.
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3 years ago
Are the graphs of the lines in the pair parallel? Explain. y = 6x + 9 27x – 3y = –81
olga nikolaevna [1]
For the 2nd equation, you need solve for y to get it by itself so once thats done you get y=9x+27 but since the x values (also the slope) aren't equal, they can't be parallel
7 0
3 years ago
Read 2 more answers
Several students in Ashton’s class were randomly selected and asked how many text messages they sent yesterday. Their answers we
alex41 [277]

Answer:

Hello Love!

All range is in math Is the highest number subtracted by the smallest number so our equation is 15 - 0 = 15

so 15 is our range!

8 0
2 years ago
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Beginning one month after birth of their son, Noah, the Nelsons deposited $100 each month in an annuity for his college fund. Th
gizmo_the_mogwai [7]

Answer:

$100 * (1 + 6.8%/12)^216 + $100*(1+6.8%/12)^215 + ... + $100*(1+6.8%/12)^1  

Now note that  

x + x^2 + x^3 + ... + x^N = x ( 1 + x + ... + x^(N-1) )  

= x ( (x^N -1)/(x-1) )  

Here, x = 1+6.8%1 = 1.00566666 and N = 216, so  

$100 * ( 1.00566666 ( 1.00566666^216 -1) / 0.00566666 )  

= $ 42398.33  

The total interest earned is $42,398 - $21,600 = $20,798

Step-by-step explanation:

The generic formula used in this compound interest calculator is V = P(1+r/n)^(nt)

V = the future value of the investment

P = the principal investment amount

r = the annual interest rate

n = the number of times that interest is compounded per year

t = the number of years the money is invested for

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