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o-na [289]
2 years ago
10

What’s the untit rate for 400 miles on 20 gallons

Mathematics
1 answer:
victus00 [196]2 years ago
6 0

Answer:

20 miles per gallon

Step-by-step explanation:

We want a unit rate where

1 is in the denominator

so we divide top and bottom by 20

\frac{400 miles/20}{20 gallons/20}  = \frac{20 miles}{1 gallon} = 20 miles a gallon

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Simplify as far as possible.<br> 2√125−5√5
sveticcg [70]

Answer:

5

Step-by-step explanation:

Simplify (-10- square root of 125)/5. −10−√1255 - 10 - 125 5. Simplify the numerator.

8 0
3 years ago
Read 2 more answers
7n+2 = 4n+17 solve the equation
lions [1.4K]

Answer:

n = -5

Step-by-step explanation:

Solve for n:

n + 2 = 4 n + 17

Hint: | Move terms with n to the left hand side.

Subtract 4 n from both sides:

(n - 4 n) + 2 = (4 n - 4 n) + 17

Hint: | Combine like terms in n - 4 n.

n - 4 n = -3 n:

-3 n + 2 = (4 n - 4 n) + 17

Hint: | Look for the difference of two identical terms.

4 n - 4 n = 0:

2 - 3 n = 17

Hint: | Isolate terms with n to the left hand side.

Subtract 2 from both sides:

(2 - 2) - 3 n = 17 - 2

Hint: | Look for the difference of two identical terms.

2 - 2 = 0:

-3 n = 17 - 2

Hint: | Evaluate 17 - 2.

17 - 2 = 15:

-3 n = 15

Hint: | Divide both sides by a constant to simplify the equation.

Divide both sides of -3 n = 15 by -3:

(-3 n)/(-3) = 15/(-3)

Hint: | Any nonzero number divided by itself is one.

(-3)/(-3) = 1:

n = 15/(-3)

Hint: | Reduce 15/(-3) to lowest terms. Start by finding the GCD of 15 and -3.

The gcd of 15 and -3 is 3, so 15/(-3) = (3×5)/(3 (-1)) = 3/3×5/(-1) = 5/(-1):

n = 5/(-1)

Hint: | Simplify the sign of 5/(-1).

Multiply numerator and denominator of 5/(-1) by -1:

Answer: n = -5

5 0
2 years ago
Given below are descriptions of two lines.
gulaghasi [49]

Answer:

Line 1 is 1/3

Line 2 is 1/3 as well

Choice 1

Step-by-step explanation:

<u>Rise over run</u>

<em><u>Line 1:</u></em>

\frac{(7)-(3)}{(6)-(-6)}

\frac{4}{12}

<u>Simplify:</u>

1/3

<em><u>Line 2:</u></em>

\frac{(2)-(1)}{(-3)-(-6)}

\frac{1}{3}

1/3

1 is Paralell to 2 because they have the same slope

I hope this helps! :D

Pls give thx and brainliest if i’m right!

5 0
3 years ago
Help please . The answer choices are <br> A. 0 <br> B. 1<br> C. 7<br> D. Undefined
frosja888 [35]

The answer would be C

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3 years ago
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Help on questions 3-5<br> Please help I will put the brainlyst
MariettaO [177]
It is 3/8 Ibs or 4 Ibs
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