3 years ago

Explain how to add -7 + 12 as if you were teaching it to someone else.

1 answer:

3 0

Because 12 is bigger than 7, the answer will be positive because the bigger number is positive, and when you have a negative and positive you must subtract and use the sign of the bigger number.

You might be interested in

simplify the difference. (–7x – 5x4 5) – (–7x4 – 5 – 9x) a. 2x4 2x 10 b. –14x4 10x 10 c. –14x4 – 10x 10 d. 2x4 2x 8

11Alexandr11 [23.1K]

If you would like to simplify the difference (–7x – 5x^4 + 5) – (–7x^4 – 5 – 9x), you can do this using the following steps:

(–7x – 5x^4 + 5) – (–7x^4 – 5 – 9x) = -7x - 5x^4 + 5 + 7x^4 + 5 + 9x = 2x^4 + 2x + 10

The correct result would be a. 2x^4 + 2x + 10.

8 0

3 years ago

One side of a square has a measurement of 2x + 4. Write an expression to represent the perimeter of the shape.

nydimaria [60]

Answer:

4(2x+4)

for example, if 5 were the length of a side you'd do 4(5). 4 because theres 4 sides and the formula for P is P= l+l+w+w OR P=2l+2w

5 0

2 years ago

In the same amount of time, James drove twice as far as Roger. Altogether, James and Roger drove 90km. Find the number of kilome

miskamm [114]

Answer:

james drove 60 and roger drove 30

Step-by-step explanation:

90/3= 30= roger

90/3=30x2=60= james

james(60)+roger(30)= 90

8 0

2 years ago

Marissa and Callie both have babysitting jobs. Marissa charges $19 plus $1.50 per hour. Callie charges $15 plus $2.75 per hour.

aliya0001 [1]

Answer:

4 hours

Step-by-step explanation:

Write an equation

19 +1.5x < 15+2.75x

Subtarct 15 on both sides

4+1.5x<2.75x

subtract 1.5x on both sides

4< 1.25x

Divide 1.25 on each side

3.2<X

Since they on,y charge per hour so 4 hours

3 0

3 years ago

Read 2 more answers

4d^3-10 as verbal expression

Rina8888 [55]

Four times d to the third minus ten

3 0

3 years ago