2 years ago

PLEASE ANSWER THE PIC BELOW (answer a, b and c)

Mathematics

1 answer:

Alex787 [66]2 years ago

6 0

Answer: b

Step-by-step explanation:

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What is the approximate area of the shaded region?

vaieri [72.5K]

If we consider that the figure is a square and the white region of the figure is a circle, the area of the shaded region is:

$S=S_{square}-S_{circle}=\ell^2-\pi r^2=10^2-\pi5^2=100-25\pi\\\\
S\approx100-25\cdot3.14=100-78.5\\\\
\boxed{S\approx21.5~cm^2}\Longrightarrow Alternative~D$

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2 years ago

Question 20 (5 points)

igor_vitrenko [27]

Answer:

Step-by-step explanation:

What you gave 4x – y = 7 is in standard form

The problem on screen

4x-2/3y=7

The standard form is 12x-2y=21

Answer is A

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2 years ago

Simplify the following expressions in indices <br>(2 x 103 x 3 x 105)/2 x 10-2

Maurinko [17]

(2 x 103 x 3 x 105) = 64890

2 x 10 -2 = 20 - 2 = 18

64890 / 18

3605

Or (206 x 315) / 20 - 2

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2 years ago

The height of a soccer ball that is kicked from the ground can be approximated by the function:

AfilCa [17]

Answer:

$\displaystyle \sqrt{3}\:sec.$

Step-by-step explanation:

$\displaystyle -54 = -18x^2 → \frac{-54}{-18} = \frac{-18x^2}{-18} \\ \\ 3 = x^2 → \sqrt{3} = x$

I am joyous to assist you anytime.

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3 years ago

In Lily's garden, there are 5 rose bushes the first year. Each year, she adds two new rose bushes. She

aniked [119]

Step-by-step explanation:

Let x = the number of years since the first year and let y = the total number of plants.

Roses: y = 5 + 2x

Tulips: y = 20 – 3x

You can use elimination to solve.

y = 5 + 2x

(-)y = 20 – 3x

0 = -15 + 5x

15 = 5x

3 = x

This means that 3 years after the first year, the number of rose bushes equals the number of tulip plants.

The graphs appear to

intersect at (3, 11) which verifies that x=3

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2 years ago

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