MATHEMATICS HIGH SCHOOL

2m-13=-8m+27
What is m

Answers

Answer 1
Answer: M=4
2m-13=-8m+27
+8m to both sides
10m-13=27
+13 to both sides
10m=40
divide by 10 to both
M=4

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MIDDLE SCHOOL

A boy jogs 250 meters in 110 seconds. What is his average speed in m/s?

Answers

Answer:

2.72 m/s

Step-by-step explanation:

We are given that

Boy jogs=250 meters

Time taken by boy=110 seconds

We have to find the average speed in m/s

In order to find the average speed then we will divide distance by time

Using the formula then we get

Average speed=

Hence, the average speed=2.72 m/s

MIDDLE SCHOOL

From A complete stop, a car reaches a velocity of 280 km/s east in 7 second what is the rate of acceleration ?

Answers

40 km/s.  I got this by dividing 280 by 7 to get 40 km/s.
HIGH SCHOOL

A jewelry store purchases a necklace for 150. They markup the necklace 75% how much will the jewelry store sell the necklace for ?

Answers

75% off? If so, the necklace is $37.50
MIDDLE SCHOOL

Which of the following is a step in simplifying the expression?

Answers

(2-3x4+5)^2 Everything in parenthesis first, and in the parenthesis, multiply first, so: 
(2-12+5)^2 Now add within the parenthesis: 
(2-7)^2 And subtract: 
(-5)^2 Parenthesis are solved, now you can do the exponent: 
25 is the answer.
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