8 is what percent of 20? 20 8 % B 60% 8 % 20 D 40%

Mathematics

2 answers:

kicyunya [14]2 years ago

5 0

Answer:

40%

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Step-by-step explanation:

Is/of=%/100

8/20=%/100

8*100=800

800/20=40

Y_Kistochka [10]2 years ago

3 0

Answer:

40%

Step-by-step explanation:

8 percent of 20=

8/20=0.4

0.4×100=40%

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Solve this equation <br>4-2x-12-2x+1

alina1380 [7]

This is not an equation because it lacks an equal sign....so the only thing we can do here is combine like terms.
4 - 2x - 12 - 2x + 1 =
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2 years ago

Read 2 more answers

If the function f(x) = -1/2x - 7 were graphed, which of the following would be true?

Fittoniya [83]

ANSWER

D. As the x-values increase, the y-values would decrease

EXPLANATION

The given function is
$y = - \frac{1}{2} x - 7$

The slope of this function is
$m = - \frac{1}{2}$

Since the slope is negative, there is a negative or an inverse relationship between x and y.

As the values of x increases, the values of y decreases.

Also, as the values of x decreases, the values of y increases.

The first option is not true because as x is becoming bigger and bigger negatively, y will become positive.

For instance, when
$x = - 40$
$y = - \frac{1}{2} ( - 40) - 7$

This implies that,

$y = 20 - 7 = 13$

Options B is obviously not true because the function has a negative relationship between x and y.

Option C is also false because, x can be positive since it is the independent variable.

See graph

Therefore, the correct answer is option D.