Solve the equation -1/3m-7=5

Answers

Answer 1

Answer:
The Equation:    -1/3 m - 7 = 5

Please watch me closely.

Add 7 to each side:    -1/3 m = 12

Multiply each side by 3 : -1 m = 36

Multiply each side by -1 :    m    = -36

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two men start from 2 places 600km apart and travel towards each other, the first travelling 5km/h faster than the other. they meet after 8 hours. what is the speed of the fastest man? I know that this relates to the following formula; speed = distance/time, but don't understand how to resolve correctly

Answers

If they meet after 8 hours, then the sum of their average speeds is 600/8=75 km per hour. If one is 5 km per hour faster than the other, then if we set the speed of the slower man to x, we have:

2x+5=75

So:

2x=70

x=30

The fastest man is 5 km per hour faster than the slower, so he travels 35 km per hour.

An 8 sided die is tossed. Determine the odds against rolling an 8.

Answers

Well it is a 1 out of 8 chanch because its a die that has 8 sides

Solve this equation: –9h – 6 + 12h + 40 = 22. A. h = 24 B. h = – 4 C. h = 4 D. h = –4/7

Answers

In the equation: -9h - 6 + 12h + 40 = 22, collecting like terms gives: -9h + 12h = 22 + 6 - 40 which gives 3h = -12. They we divide both sides of the equation by 3 to get 3h / 3 = -12 / 3 which gives h = -4. Therefore, the solution to the given equation is h = -4 (option B).

If you are supposed to take pills at half-hour intervals, how many minutes would 5 pills last? A) 120 minutes B) 125 minutes C) 130 minutes D) 135 minutes

Answers

Answer: B) 125

Step-by-step explanation:

What is the area, in square, of the rectangle?Sides 2
----
9

Top and bottom 3
----
7

Answers

For the area of a square or rectangle you multiply the sides. So 2 times 9 is 18. And then for the other it would be 3 times 7, which is 21.

Ii dont understand how to solve a system of linear equations using the substitution method

Answers

so 8x-7y=-7
-16+12x=14
you can simplify the sceon equation
-8+6x=7
add 8 to both sides
6x=15
divide by 6
x=15/6
subssitute
8(15/6)-7y=-7
120/6-7y=-7
20-7y=-7
subtract 20
-7y=-27
divide by -7
y=27/7

x=15/6
y=27/7

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