3 years ago

Eight more than three times a number is equal to the number. What is the number

Mathematics

2 answers:

Tema [17]3 years ago

5 0

Answer

Step-by-step explanation:

hodyreva [135]3 years ago

3 0

Answer:

-4

Step-by-step explanation:

-4(3) = -12

-12 + 8 = -4

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Rebecca has 3 pairs of running shoes.She bought new shoelaces for each pair.How many shoelaces did she buy?

kvasek [131]

Answer: 6 shoelaces

Step-by-step explanation:

Since 1 pair of shoes has 2 shoelaces, 3 x 2 = 6

3 pairs x 2 shoelaces = 6 shoelaces

Hope this helped!

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3 years ago

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All of the following are equivalent except<br> O 4y<br> O (4)<br> 04.y<br> O 4+ y

barxatty [35]

Answer:

I think it's 4y

Step-by-step explanation:

I think it's 4y is because if y = 0 they all work but 4y which is 0 while all the others are 4

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3 years ago

The volume of a cone is 3πx3 cubic units and its height is x units. Which expression represents the radius of the cone’s base, i

dalvyx [7]

Answer:

Step-by-step explanation:

<u>The Volume of a Cone</u>

The volume of a cone of radius r and height h is:

$\displaystyle V=\frac{1}{3}\pi hr^2$

We are given the volume of a cone is

$V=3\pi x^3$

Equating:

$\displaystyle \frac{1}{3}\pi hr^2=3\pi x^3$

Multiplying by 3:

$\pi hr^2=9\pi x^3$

Simplifying by pi:

$hr^2=9 x^3$

Since h=x:

$xr^2=9 x^3$

Dividing by x:

$r^2=9 x^2$

Taking square roots:

$r=\sqrt{9 x^2}=3x$

Thus: r=3x

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3 years ago

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PLEASE HELP I WILL MARK BRAINLIST!!

lina2011 [118]

Answer:

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3 years ago

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3) There were 35 children and 10 adults at a barbeque.

Mila [183]

Answer:

3. a. 10:35= 2:7

b.35:45=7:9

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3 years ago