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3 years ago

Find the area of the Compound shape The answer is 89 m^2 I just need the steps....

Mathematics

1 answer:

Lera25 [3.4K]3 years ago

7 0

Answer:

Step-by-step explanation:

Area of semi-circle is $\frac{\pi r^2}{2}$ ≈ $\frac{22}{7}$ × 4² ÷ 2 ≈ 25 cm²

Area of square is 8² = 64 cm²

Total area is 25 + 64 = 89 cm²

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The roots of the function f(x) = x2 – 2x – 3 are shown. what is the missing number? x = –1 and x =

andrey2020 [161]

we have

$f(x)=x^{2}-2x-3$

Find the roots

Equate the function to zero

$x^{2}-2x-3=0$

Group terms that contain the same variable, and move the constant to the opposite side of the equation

$x^{2}-2x=3$

Complete the square. Remember to balance the equation by adding the same constants to each side.

$x^{2}-2x+1=3+1$

$x^{2}-2x+1=4$

Rewrite as perfect squares

$(x-1)^{2}=4$

Square root both sides

$(x-1)=(+/-)2$

$x=1(+/-)2$

$x=1+2=3$

$x=1-2=-1$

therefore

<u>the answer is</u>

$x=3$

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3 years ago

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GarryVolchara [31]

Answer:

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Step-by-step explanation:

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3 years ago

The table shows the amount of sugar needed to make lemonade. Are the quantities proportional? Explain which method you used and

Klio2033 [76]

Answer: Yes

Step-by-step explanation:

For the first sugar and servings part, 4 for sugar, 2 for servings.

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2 years ago

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You have 636.3 g of pennies and each penny weighs 3.03g. how many pennies do you have

nalin [4]

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total weight/weight of 1 penny=number of pennies
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3 years ago

Im pretty sure it’s right , just need someone to confirm it is

djyliett [7]

It’s correct. i like your handwriting btw, it’s really pretty

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3 years ago