What does the time say ?

Viktor [21]

a. They multiplied 10 by 4 creating 40 and 8 times 4 to make 32 so 10 × 4 and 8 × 4 B IS IN PICTURE
not sure what an area model is or how I make that up but you can get 15 from 45÷3

7 0

2 years ago

Asa received scores of 72, 97, and 82 on her last three math tests. She needs a mean test score of 82 to qualify for the math te

Flauer [41]

Scores are {72, 97, 82, x} where x is the unknown fourth score

They add up to 72+97+82+x = x+251

Divide this sum over four because there are four scores we want to average out. We end up with (x+251)/4 = M where M is the mean. Asa wants the mean to be 82, so make M = 82.

We can replace M with 82 and solve for x like so

(x+251)/4 = M

(x+251)/4 = 82

x+251 = 4*82

x+251 = 328

x = 328-251

x = 77

Asa needs a score of 77 on the fourth test so that the mean of the four tests is 82. If she scores higher than 77 on the fourth test, then the mean will be larger than 82.

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Depending on what your teacher is looking for, the first step is to establish your variable. So you would say "let x = fourth score". However, that seems too easy. So perhaps your teacher is looking for the equation (x+251)/4 = 82 or some variant of it.

5 0

3 years ago

Read 2 more answers

Find the average value of the function over the given interval. (Round your answer to three decimal places.) f(x) = −sin x, [0,

deff fn [24]

Answer with Step-by-step explanation:

We are given that

$f(x)=-sin x$