Betty needs 4 1/3 balls of yarn for every 7 scarves she knits how many will she need for 14

Mathematics

1 answer:

Harman [31]3 years ago

8 0

Well, the answer comes out to 24.5, but round it up to 25.

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Find the radius of a sphere with a surface area of 1024π square inches

agasfer [191]

Answer:

Step-by-step explanation:

The formula of a Surface Area of a sphere:

$S.A.=4\pi R^2$

R - radius

We have

$S.A.=1024\pi\ in^2$

Substitute:

$4\pi R^2=1024\pi$ <em>divide both sides by π</em>

$4R^2=1024$ <em>divide both sides by 4</em>

$R^2=256\to R=\sqrt{256}\\\\R=16\ in$

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3 years ago

Planes Q and R are parallel. Explain how you know lines a and b are skew.

IrinaVladis [17]

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3 years ago

Read 2 more answers

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kicyunya [14]

Consider the lengths of consecutive 1-2 blocks.

block 1 - 1, 2 - length 2

block 2 - 1, 2, 2 - length 3

block 3 - 1, 2, 2, 2 - length 4

block 4 - 1, 2, 2, 2, 2 - length 5

and so on.

Recall the formula for the sum of consecutive positive integers,