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Len [333]
4 years ago
12

Find the result when 30 is decreased by 85%. ...?

Mathematics
1 answer:
Naddika [18.5K]4 years ago
6 0
We can first change 85% in the decimal form:
85 % = 0.85
30 x 0.85 = 25.5
30 - 25.5 = 4.5
Or we can do it another way :
30 x ( 1 - 0.85 ) = 30 x 0.15 = 4.5
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Subtract 36 from 84 to get 48.

Now you're left with x<_48

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4 years ago
Guided Practice
frez [133]

Answer:

A. 15, 20, and 25

Step-by-step explanation:

Note that 3-4-5 is a pythagorean triple via following:

\sqrt{ (3^2 + 4^2 )} = 5^2

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7 0
3 years ago
Read 2 more answers
NEED THIS ASAP!!!!!!!!!!!!!
Bond [772]
<h3>Answer:</h3>
  • Calvin: incorrect, sign error
  • Greg: incorrect, has no relationship to the given expression
  • Ruben: incorrect, sign error
  • Equivalent expresssion: 7 92(4x -11)
<h3>Explanation:</h3>

The two terms on the right, -8x and +22, have even coefficients, so a factor of 2 can be factored out. If we do that, then these two terms become ...

... 2(-8x/2 +22/2) = 2(-4x +11)

We could, instead, factor out -2 so the x-coefficient inside parentheses is positive:

... -2(-8x/-2 +22/-2) = -2(4x -11)

Note that the signs of the two terms inside parentheses are different no matter which way we do it.

<u>Equivalent expressions</u>

Calvin could have written: 7 -2(4x -11)

Ruben could have written: 7 +2(-4x +11)

Greg could have written: 8(2 -x) -1. He would have rearranged the expression to 16 -8x -1 before doing so.

3 0
3 years ago
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The answer is 96 cm using the formula (a+b)h/2.

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