3 years ago

Which is a valid proportion? 3 over 4 = 21 over 28

Mathematics

1 answer:

dangina [55]3 years ago

5 0

Answer: I think that it is the first one

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Given a cone with a volume of 288 in and height 7 in find the base radius of the cone

nlexa [21]

$\bf \textit{volume of a cone}\\\\
V=\cfrac{\pi r^2 h}{3}\quad 
\begin{cases}
r=radius\\
h=height\\
------\\
h=7\\
V=288
\end{cases}\implies 288=\cfrac{\pi \cdot r^2\cdot 7}{3}
\\\\\\
\cfrac{288\cdot 3}{7\pi }=r^2\implies \sqrt{\cfrac{288\cdot 3}{7\pi }}=r$

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4 years ago

HELP PLEASE. Two points are 17 units apart on a number line. The coordinate of one point is -20.

cluponka [151]

Answer: -37 & -3

Step-by-step explanation:

-20-17= -37

-20+17= -3

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3 years ago

What is the scale factor of the dilation? a (-4, -6) b (-8, 2) c (-2, 4) a' (-2, -3) b' (-4, 1) c' (-1, 2)

geniusboy [140]

I believe the first is C and the second is A

6 0

3 years ago

Please show step by step <br> I don’t know how to do this

Pepsi [2]

Answer:

4=1

Step-by-step explanation:

2(n + 2) = 4n + 1 - 2n

2n + 4 =4n - 2n + 1

2n + 4 = 2n + 1

2n-2n+4=2n-2n+1

0+4=0+1

4=1

idk if this is right myself but this is want i found on internet, i searched it up for 1 hour and this is the ans they gave me...

3 0

3 years ago

HELP - IT'S EASY - Kelly goes to a local store that has a monthly fee of $5 and rents games there for $1.75 a week. An online co

leva [86]

Answer:

after 10 games

Step-by-step explanation:

1.75x + 5 = 2.25x

will equal 10 games

6 0

3 years ago