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adell [148]
3 years ago
10

Martin ran 6.5 miles in one hour. At that speed, how many miles will he three hours?

Mathematics
2 answers:
NNADVOKAT [17]3 years ago
7 0
ANSWER: Martin will run 19.5 miles in 3 hours.

STEP-BY-STEP EXPLANATION: 6.5 x 3 = 19.5
solong [7]3 years ago
6 0

Answer:

19.5 miles

Step-by-step explanation:

6.5 mph means that each hour, he runs 6.5 miles.

So you already know how much he runs per hour.

6.5 mph x 3 h = 19.5mi

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Can someone please help me: Slove 17+3(z-2)-11z=-7(z+2)+14
gayaneshka [121]

Answer:

z = 11

Step-by-step explanation:

Simplifying

17 + 3(z + -2) + -11z = -7(z + 2) + 14

Reorder the terms:

17 + 3(-2 + z) + -11z = -7(z + 2) + 14

17 + (-2 * 3 + z * 3) + -11z = -7(z + 2) + 14

17 + (-6 + 3z) + -11z = -7(z + 2) + 14

Combine like terms: 17 + -6 = 11

11 + 3z + -11z = -7(z + 2) + 14

Combine like terms: 3z + -11z = -8z

11 + -8z = -7(z + 2) + 14

Reorder the terms:

11 + -8z = -7(2 + z) + 14

11 + -8z = (2 * -7 + z * -7) + 14

11 + -8z = (-14 + -7z) + 14

Reorder the terms:

11 + -8z = -14 + 14 + -7z

Combine like terms: -14 + 14 = 0

11 + -8z = 0 + -7z

11 + -8z = -7z

Solving

11 + -8z = -7z

Solving for variable 'z'.

Move all terms containing z to the left, all other terms to the right.

Add '7z' to each side of the equation.

11 + -8z + 7z = -7z + 7z

Combine like terms: -8z + 7z = -1z

11 + -1z = -7z + 7z

Combine like terms: -7z + 7z = 0

11 + -1z = 0

Add '-11' to each side of the equation.

11 + -11 + -1z = 0 + -11

Combine like terms: 11 + -11 = 0

0 + -1z = 0 + -11

-1z = 0 + -11

Combine like terms: 0 + -11 = -11

-1z = -11

Divide each side by '-1'.

z = 11

Simplifying

z = 11

4 0
3 years ago
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Evaluate -4² please hurry
alexgriva [62]

squaring something multiplies it by itself. -4^2 = -4*-4 = 16

8 0
3 years ago
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What is the ratio table for 31​
ladessa [460]

Answer:

31 92 123

1    2   3

Step-by-step explanation:

5 0
3 years ago
Temperature at 6am was -6 degrees and 17 degrees at 1pm. How many degrees has the temperature increased between 6am and 1 pm?
polet [3.4K]

23 degrees

From -6 to 0 =6 degrees

From 0 to 17=17 degrees

17+6=23

3 0
3 years ago
Given x+y=8, find y if x =3
Elodia [21]
Plug in x.

3+y=8

Subtract 3 on both sides. (do the inverse of addition; which is subtraction)

y=5

Check your answer.

3+5=8

8=8

That checks out! y is definitely 5.

I hope this helps!
~kaikers
3 0
3 years ago
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