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Nesterboy [21]
3 years ago
9

Find the unit rate for 25 miles in 2 hours.

Mathematics
1 answer:
Svetlanka [38]3 years ago
8 0

Answer:

12.5 miles per hour

Step-by-step explanation:

This is a fraction equal to

25 miles ÷ 2 hours

We want a unit rate where

1 is in the denominator,

so we divide top and bottom by 2

<u>25 miles </u>÷ 2

2 hours ÷ 2

<u>12.5 miles</u>

1 hour  

= 12.5 miles per hour

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Marysya12 [62]

Answer:

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Step-by-step explanation:

7.\\(3s^2+7s+2)+(5s^2+9s-1)=3s^2+7s+2+5s^2+9s-1\\\\\text{combine like terms}\\\\=(3s^2+5s^2)+(7s+9s)+(2-1)\\\\=8s^2+16s+1

8.\\(-3t^2u^3)(5t^7u^8)=(-3\cdot5)(t^2t^7)(u^3u^8)\qquad\text{use}\ a^na^m=a^{n+m}\\\\=-15t^{2+7}u^{3+8}=-15t^9u^{11}

11.\\n-the\ number\\\\n^2=n+6\qquad\text{subtract}\ n\ \text{and}\ 6\ \text{from both sides}\\\\n^2-n-6=0\\\\n^2+2n-3n-6=0\\\\n(n+2)-3(n+2)=0\\\\(n+2)(n-3)=0\iff n+2=0\ \vee\ n-3=0\\\\n+2=0\qquad\text{subtract 2 from both sides}\\n=-2\\\\n-3=0\qquad\text{add 3 to both sides}\\n=3

4 0
4 years ago
(17+8)-6x2 what is the value
zlopas [31]
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6 0
3 years ago
Read 2 more answers
what is peter's number? "if you subtract 12 from my number and multiply the difference by -3, the result is -54
lara31 [8.8K]

Answer:

30

Step-by-step explanation:

-54/-3 = 18

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7 0
3 years ago
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AleksAgata [21]

The third option is the answer

Step-by-step explanation:

6 0
3 years ago
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olga55 [171]

Answer:

1) 1/10

2) 1/2

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Step-by-step explanation:

1)

1 favorable outcome and 10 total outcomes.

P(3) = \frac{1}{10}

2)

5 favorable outcomes and 10 total outcomes

P(even) = \frac{5}{10} = \frac{1}{2}

3)

2 favorable outcomes and 10 total outcomes

P(multiples\ of\ 5) = \frac{2}{10} = \frac{1}{5}

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3 years ago
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