3 years ago

A circle has a radius of 7 inches. What is the area of the circle? Mark only one oval

Mathematics

1 answer:

Vikki [24]3 years ago

3 0

Answer:A≈153.94in²

Step-by-step explanation:Hope this was helpful

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Please help

lubasha [3.4K]

Let us check series : -10 /-2 = 5 -50/-10 = 5

so it is a geometric series with a= -2 and r= 5

sum formula for n terms of geometric series = a ( r^n -1 ) /( r-1)

here we find S5 that is n= 5 = -2 ( 5^ 5 - 1) /( 5-1)

= -2 ( 3125 -1) / 4 = -1562

second series is : 1.5/1 = 1.5 2.25/1.5 = 1.5

this is also geometric series but n = 12 a= 1 and r= 1.5

we use same formula

S12 = 1 ( (1.5) ^12 -1) /( 1.5-1) =

128.74 / 0.5 = 257.49

Last is 2/1= 2 4/2 = 2 8/4 = 2 so r = 2 a = 1 and n = 12

we use same formula 1 ( 2^12 - 1) / (2-1)

= 4095

Answers : -1562 , 257.49 , 4095

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Answer:

Step-by-step explanation:

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3 years ago

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Lindsay went to the teacher supply store she bought 10 whiteboards for a total of $35 and some posters for $5.40 each. If she sp

Paul [167]

The whiteboards she bought cost $35, and she spent a total of $51.20, subtract to find out the total amount she spent on posters:

$\sf 51.20-35=16.2$

So she spent a total of $16.20 on posters, now divide by the amount one poster costs to find out how many posters she bought.

$\sf 16.2\div 5.4=\boxed{\sf 3}$

So she bought 3 posters.

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Sarah has 3/14 pounds of chocolate chips to use in her cookies. It takes 1/8 pound of chocolate chips to make one batch of choco

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5/56

Step-by-step explanation:

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When flipping a coin three times, what is the probability of landing on tails all two times?