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Elza [17]
3 years ago
7

Need answers to 30 and 31

Mathematics
1 answer:
Mice21 [21]3 years ago
5 0

Answer:

C ; A

Step-by-step explanation:

<u>Question 30:</u>

Perimeter is the sum of all sides.

Perimeter for a recatngle can be found with the formula:

2(L+W)

Length is 7

Width is 4

Plug our values in.

2(7+4)

2(11)

22

Answer C

<u>Question 31:</u>

Circumference of a circle can be found with the formula:

πd.

Diameter of the given circle is 6.

Plug it in

6π

Round π to 3.14

6(3.14)

18.84

Answer A

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Answer:

t=15.4\ years

Step-by-step explanation:

The  exponential growth function compounded continuously is equal to

A=P(e)^{rt}  

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we have  

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substitute in the function above

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simplify

4=(e)^{0.09t}

Take natural log of both sides

ln(4)=ln[(e)^{0.09t}]

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4 years ago
A circle with a radius of 1/2ft is dilated by a scale factor of 8. Which statements about the new circle are true? Check all tha
just olya [345]

Answer:

A,C,F,G,H

Step-by-step explanation:

According to the given statement the radius of the circle before dilation is 1/2ft and the scale factor is 8. The dilation by scale factor 8 means the radius of new circle is 8 times of the original circle(4ft)

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Now put the value of r replaced by 8r in the formula.

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4 years ago
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Hey there!

|c^2 + b^2|

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Therefore, your answer is: -13


Good luck on your assignment & enjoy your day!


~Amphitrite1040:)

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