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Leya [2.2K]
3 years ago
15

4|m-n| If m=-7 and n=2

Mathematics
1 answer:
Snowcat [4.5K]3 years ago
6 0
You would first substitute -7 for m and 2 for n. It would look like this: 4| -7-2 | . we first solve the absolute value because it is the first step in PEMDAS or order of operations. -7-2 is equal to -9. Our equation should look like this now: 4 |-9| . we solve the absolute value portion, the absolute value of a negative number is the the same number but positive. the absolute value would be 9. (we just take the negative symbol off). we now have 4 x 9. This is equal to 36.

36 is the answer.
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-(x/4)=-8 what does x equal? can you explain how you got the answer?
snow_tiger [21]
I believe the answer is x=32.
7 0
3 years ago
What is the value of 1/6 + 1/12 + 2/6
Elena L [17]

Answer:

7/12

Step-by-step explanation:

1/6 +1/12+2/6

=1×2/6×2 +1/12+2×2/6×2

=2/12+1/12+4/12

final answer is

= 7/12

6 0
3 years ago
Read 2 more answers
Two trucks leave a factory at the same time. One travels east at 60 mph, and the other travels west at 30mph. In how many hours
devlian [24]
What are the choices
8 0
3 years ago
A train travels 95 kilometers in 4 hours, and then 94 kilometers in 3 hours. What is its average speed?
Brilliant_brown [7]
One way you could do this is by dividing 94 by 3 and then 95 by 4.  This gives you the KPH (Kilometers per hour) of both trains. The first speed you mentioned, we will call that speed 'A.' The second one will be speed 'B.' Speed A's KPH is 23.75 MPH. Speed B's KPH is 31.333. We can change these into fractions (23 3/4 and 31 1/3.) These fractions could then be set into like terms. (This gives us 285/12 and 376/12) We then add these together. This gives us 661/12. The next thing to do is to convert this back to a decimal form, which gives us 55.0833.... Divide this number by two, and that is your answer. The average speed of the train is 29.04 KPH (This number is rounded to the nearest hundreth- be sure to make a note of that on your answer sheet)


5 0
3 years ago
Solve 3x²-x-2=0. Please show all work.​
lorasvet [3.4K]

3x²-x-2=0

Δ=1+24=25 (Δ=b²-4ac)

x₁,₂=\frac{1(+/-)\sqrt{25} }{6}

x₁,₂=\frac{1(+/-)5}{6}

x1=\frac{1+5}{6}=6/6=1

x2=\frac{1-5}{6}=\frac{-2}{3}

so

x1=1

x2=\frac{-2}{3}

3 0
4 years ago
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