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SSSSS [86.1K]
3 years ago
7

Please help and I will mark you as brainliest!

Mathematics
2 answers:
oksian1 [2.3K]3 years ago
5 0
5x5x3.142=78.55
78.55/2=39.275
answer: 39.275cm squared
11Alexandr11 [23.1K]3 years ago
3 0

Answer:

39.28 cm²

Step-by-step explanation:

The area (A) of a circle is calculated as

A = πr² ( r is the radius )

Thus the area of a semicircle is one half the area of the circle

A = \frac{1}{2}πr²

The diameter of the circle is 10 cm, thus radius = 0.5 × 10 = 5 cm

A = 0.5 × 3.142 × 5² = 0.5 × 3.142 × 25 ≈ 39.28 cm² ( to 2 dec. places )

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Bess [88]
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so for f(0) all that means is where you see x plug 0 for x..

f(0)= 0.02(0)^2+ 0.08(0) + 30.6
f(0)=  30.6

f(4)= 0.02(4)^2 + 0.08(4) + 30.6

f(10)= 0.02(10)^2 + 0.08(10) + 30.6

attached are calculated answers 

8 0
3 years ago
What is the derivative of y=tan(arcsin(x))?
Anuta_ua [19.1K]
Hello,

(tg(x))'=1/cos²(x)

(arcsin(x))'=1/√(1-x²)

cos²(arcsin(x))=1-sin²(arcsin(x))=1-x²


(tg(arcsin(x)))'= \dfrac{1}{cos(arcsin(x)))^2} * \dfrac{1}{\sqrt{1-x^2}} \\

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= \dfrac{1}{1-x^2} * \dfrac{1}{\sqrt{1-x^2}} \\

\boxed{= \dfrac{\sqrt{1-x^2}}{x^4-2x^2+1}}\\


4 0
3 years ago
Is it possible for two different numbers, when squared, to give the same result? What does this result tell you about solving an
Marizza181 [45]
Let x,y be two different numbers
suppose x^2=y^2
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also when a vairable is squared like y=x^2
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Step-by-step explanation:

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8 0
2 years ago
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