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3 years ago

8

Gabe collects model train and planes. He has 2 trains for every 5 planes. If Gabe has 25 planes, how many trains does he have? [

Type your answer as a number.]

1 answer:

Alenkasestr [34]3 years ago

4 0

he would have 10 trains.

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What is the answer to 5c-25=2c+6

Masja [62]

Subtract 2c from both sides
5c-25-2c=2c+6-2c
3c-25=6
add 25 to both sides
3c-25+25=6+25
3c=31
Divide both sides by 3
3c/3=31/3
c=31/3
hope this helps!

4 0

3 years ago

Simplify the expression –3(x + 3)2 – 3 + 3x. What is the simplified expression in standard form?

andrew11 [14]

For this case we must simplify the following expression:

$-3 (x + 3) ^ 2-3 + 3x$

We solve the parenthesis:

$-3 (x ^ 2 + 2 (x) (3) + 3 ^ 2) -3 + 3x =\\-3 (x ^ 2 + 6x + 9) -3 + 3x =$

We apply distributive property to the terms within parentheses:

$-3x ^ 2-18x-27-3 + 3x =$

We add similar terms:

$-3x ^ 2-18x + 3x-27-3 =\\-3x ^ 2-15x-30$

Answer:

$-3x ^ 2-15x-30$

8 0

3 years ago

Read 2 more answers

you take a test in which there are 249 points possible. The test consist of true or false questions worth two points each multip

Elina [12.6K]

I have no clue how to do that if u do no how to do other math can u help me I need alot of help

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3 years ago

Need help please stressing out over this problem!?!?!

ludmilkaskok [199]

$v = \frac{4}{3} \times \pi \times {r}^{3}$

Finding the radius,

$d = 2r, \: r = \frac{d}{2} = \frac{8}{2} = 4inches$

Plugging in our values,

$v = \frac{4}{3} \times 3.14 \times {4}^{3} = \frac{4}{3} \times 3.14 \times 64 = 267.95 {inches}^{3} \\$

Rounding to the nearest whol number,

$v = 268 {inches}^{3}$

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2 years ago

How many solutions does the equation below have? 1/(-6-8x) = -3- 1x

uranmaximum [27]

Answer:

This equation has 2 solutions.

1. $x=\frac{-15+\sqrt{89}}{8}$

2. $x=-\frac{15+\sqrt{89}}{8}$

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1 year ago