3 years ago

Estimate how many 12 -inch rulers will be about the same length as a sheet of paper

Mathematics

2 answers:

Zinaida [17]3 years ago

7 0

1 would be the answer

alina1380 [7]3 years ago

5 0

If you're looking at a standard sheet of copy paper, one ruler.

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Question 1 2 (4x - 1) + 6 Equivalent to what

WARRIOR [948]

Answer:

2 (4x - 1) + 6 = 8x + 4 = 4(2x+1)

Step-by-step explanation:

2 (4x - 1) + 6

= (2*4x + 2*-1) + 6

= 8x - 2 + 6

= 8x + 4

= 4/(2x+1)

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2 years ago

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Blizzard [7]

Answer:

the answer to that question is 99

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2 years ago

What’s the value of X in the triangle

elixir [45]

Answer:

Step-by-step explanation:

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3 years ago

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Andy bought 4.85 meters of cord. The cord cost 98¢ per meter. He also purchased 9.6 meters of copper wire. It cost $1.29 per met

laiz [17]

The correct answer 2.86

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3 years ago

Please help me with this

horrorfan [7]

Answer:

$\dfrac{4000\pi}{3}$ ft³

Step-by-step explanation:

First, let's figure out how to get the volume of a sphere from its surface area. If r is the radius of our sphere, then

The formula for a sphere's surface area is $A = 4\pi r^2$

The formula for a sphere's volume is $V=\frac{4}{3}\pi r^3$

So to get from area to volume, we have to divide the area by 3 and then multiply it by r. Mathematically:

$V=\frac{A}{3}r$

Before we solve for V though, we need to find the radius of our sphere. Thankfully, we're given the surface area - $400\pi$ ft² - so we can use the area formula to find that radius:

$A=4\pi r^2=400\pi\\r^2=100\\r=10$

And now that we have our radius, we can put it into our volume formula to find

$V=\frac{A}{3} r=\frac{400\pi}{3}(10)=\frac{4000\pi}{3}$ ft³

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3 years ago