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4 years ago

Can somebody please help me with these four math questions?

2 answers:

alexandr1967 [171]4 years ago

8 0

For question 4, it would be a^2+b^2=c^2. So you would set up the equation as a^2+14^2=18^2. the third side would equal approximately 23cm.

Nina [5.8K]4 years ago

8 0

1.Area of rectangle=150 sq.feet
New length=15/5=3 feet
New breadth=10/5=2 feet
New area=15 sq.feet
∴Area is decreased by 135 sq.feet.

2. TSA of a sphere =4πr²=100π
⇒4r²=100
⇒r²=25
⇒r=5 cm
Volume=4/3πr³
=4/3×3.14×125
=392.5 cm³

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kobusy [5.1K]

Answer:

The solution I got is (4,2)

Step-by-step explanation:

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3 years ago

Let f(x)=−1/4(x+4)^2−8 . What is the average rate of change for the quadratic function from x=−2 to x = 2? Enter your answer in

kiruha [24]

Answer:

Average rate of change of function is -2.

Step-by-step explanation:

Given $f(x)=\frac{-1}{4}(x+4)^2-8$ .

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4 years ago

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Alchen [17]

Answer: A= 34

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Step-by-step explanation:

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3 years ago

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Burka [1]

It is B
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3 years ago

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natita [175]

Answer:

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Step-by-step explanation:

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3 years ago