Which of the following is a correct interpretation of the expression -4 - (-7)?

Mathematics

2 answers:

Zielflug [23.3K]3 years ago

5 0

Answer:

Step-by-step explanation:

So we have the expression:

$-4-(-7)$

First, simplify. Two negatives make a positive. Therefore, the -(-7) turns into +7:

$-4-(-7)\\=-4+7$

When adding on the number line, we move to the right.

Therefore, the correct interpretation is the value 7 digits to the <em>right</em> of -4.

D is the correct answer.

Oliga [24]3 years ago

5 0

Answer:

D. the number that is 7 to the right of -4 on the number line

Step-by-step explanation:

interpret -4 - (-7)

= -4 +7

therefore

the number that is 7 to the right of -4 on the number line

so its D.

You might be interested in

In a sample of 400 customers at a fast-food restaurant, it was

damaskus [11]

If you put them into to proportion
156/400 and then put a variable for the unknown x/1200
1200 divided by 400 = 3
156 times 3 = 468
468 order salad out of 1200

4 0

3 years ago

A piece of wire measuring 20 feet is attached to a telephone pole as a guy wire. The distance along the ground from the bottom o

dem82 [27]

Answer: Height at which the wire is attached to the pole is 12 feet.

Explanation:

Since we have given that

Length of the wire = 20 feet

Let the height at which wire is attached to the pole be h

and distance along the ground from the bottom of the pole to the end of the wire be x+4

Now, it forms a right angle triangle so, we can apply "Pythagorus theorem".

$H^2=B^2+P^2\\\\20^2=x^2+(x+4)^2\\\\400=x^2+x^2+8x+16\\\\400=2x^2+8x+16\\\\400=2(x^2+4x+8)\\\\200=x^2+4x+8\\\\x^2+4x-192=0\\\\x^2+16x-12x-192=0\\\\x(x+16)-12(x+16)=0\\\\(x+16)(x-12)=0\\\\x=-16\ and\ 12$