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Elan Coil [88]
3 years ago
9

What number is 140% of 15

Mathematics
2 answers:
Dennis_Churaev [7]3 years ago
5 0

Answer:

21

Step-by-step explanation:

Rudiy273 years ago
3 0

Answer:

21

Step-by-step explanation:

"What number" is the variable.

"is" means equals.

"140%" means 140 / 100.

"of" means multiply.

So:

x = 140/100 × 15

x = 21

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1-(28-21)/28=.075

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Which<br>expression is equivalent to 1/5m -20​
muminat

There are infinite equivalent expressions. Here are some:

1/5(m-100)

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If you expand any of these or any of the terms, you will get an equivalent expression.

7 0
3 years ago
Consider the function f ( x ) = − 2 x 3 + 27 x 2 − 108 x + 9 . For this function there are three important open intervals: ( − [
Darya [45]

Answer:

<em>A=3 and B=6</em>

Step-by-step explanation:

<u>Increasing and Decreasing Intervals of Functions</u>

Given f(x) as a real function and f'(x) its first derivative.

If f'(a)>0 the function is increasing in x=a

If f'(a)<0 the function is decreasing in x=a

If f'(a)=0 the function has a critical point in x=a

As we can see, the critical points may define open intervals where the function has different behaviors.

We have

f ( x ) = - 2 x^3 + 27 x^2 - 108 x + 9

Computing the first derivative:

f' ( x ) = - 6 x^3 + 54 x - 108

We find the critical points equating f'(x) to zero

- 6 x^3 + 54 x - 108=0

Simplifying by -6

x^2 -9 x +18=0

We get the critical points

x=3,\ x=6

They define the following intervals

(-\infty,3),\ (3,6),\ (6,+\infty)

Thus A=3 and B=6

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3 years ago
PLEASE HELP ITS EASY MATH
attashe74 [19]

Answer:

10

Step-by-step explanation:

Acc to question, the workers have installed 240 chairs in 4 days which equals 60 chairs in 1 day.

So the will require 600 /60 =10 days from the start.

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