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Romashka-Z-Leto [24]
2 years ago
9

I need help with the last two !!!

Mathematics
1 answer:
Dmitriy789 [7]2 years ago
6 0

Step-by-step explanation:

G(x) = - x^2 + 10x

a + G(a) = a - a^2 + 10a = - a^2 + 11a or 11a - a^2 or a(11 - a)

1/G(a) = 1/(10a - a^2) = 1/a(10 - a)

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2 years ago
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Natalka [10]

Answer:

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Step-by-step explanation:

Make a system of equations where g is for girls and b is for boys.

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Rewrite without the parentheses because it's addition and not multiplication.

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3 0
3 years ago
Use Heron's formula to find the area of the triangle. Round to the nearest square foot.
Sphinxa [80]

Answer:

A ≈ 2 ft²

Step-by-step explanation:

The area (A) of a triangle using Heron's formula is

A = \sqrt{s(s-a)(s-b)(s-c)}

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s = \frac{a+b+c}{2} = \frac{4+4+1}{2} = \frac{9}{2} = 4.5

Then

A = \sqrt{4.5(4.5-4)(4.5-4)(4.5-1)}

   = \sqrt{4.5(0.5)(0.5)(3.5)}

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   ≈ 1.9843...

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I’ve already tried to answer this question but somebody already said it was wrong I’m sorry baby
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