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True [87]
4 years ago
14

Which number line best shows how to solve −8 − (−2)? (5 points)

Mathematics
1 answer:
Crazy boy [7]4 years ago
4 0
<h3>Answer: Choice A</h3>

Arrow from 0 to -8 (pointing left). Another arrow from -8 to -6 (pointing right)

See diagram below

================================================================

Explanation:

Let's think of this in terms of money. Writing -8 means we are 8 dollars in debt. Since -8 is listed first, this means we start at 0 and go 8 units to the left along the number line, to land on -8.

Then we'll go 2 units to the right to land ultimately at -6. This is because of the "-(-2)" portion, which is the same as "+2". Subtracting a negative is the same as adding. The two negatives cancel each other out.

Going back to the money example, if we have a balance of -8 (we're 8 dollars in debt) and taking away 2 IOU notes means we're 6 dollars in debt. Subtracting a negative can be thought of as taking away debt.

Side note: If we had -8-2, then we would go 2 units to the left of -8 to land on -10 instead.

You might be interested in
8/10 divided by 1/3 Help Needed
tankabanditka [31]
8/10 / 1/3

flip the sign and the second number

8/10 (3/1)

multiply across

24/10

simplify

12/5

12/5 is your answer

hope this helps
3 0
4 years ago
Read 2 more answers
Anyone have a answer for this?
LiRa [457]

Answer:

36.1 meters

Step-by-step explanation:

Since this is a rectangle, the parallel sides are equal to each other, meaning we technically already know all the side lengths.

I'll choose to look at the bottom triangle in this case

30 is already there, and the other leg should be 20. Knowing this, we can plug these into the pythagorean theorem.

20 is A, 30 is B, and the missing side is C

a^{2} + b^{2} = c^{2}\\20^{2}  + 30^{2} = c^{2} \\400 + 900 = 1300 \\\sqrt{1300} = 36.06\\

C, the missing side to the nearest tenth is 36.1 meters

7 0
3 years ago
WILL GIVE BRAINLIEST<br> PLZ help meh<br> thank you
GREYUIT [131]

Answer:

the -2 at the end means that while the x remains constant, the y will be smaller - it shifts it 2 units downthe other change is that it's x+4 now, not x, and this shifts the graph left. (the value of function is now the same as previously when x was smaller)the answer is B!

Step-by-step explanation:

5 0
3 years ago
Simplify the expression. 3(2y - 8) - 2y(5 - y)
seraphim [82]

Answer:

\boxed{\bold{2y^2-4y-24}}

Step By Step Explanation:

Expand \bold{3\left(2y-8\right): \ 6y-24}

\bold{6y-24-2y\left(5-y\right)}

Expand \bold{-2y\left(5-y\right): \ -10y+2y^2}

\bold{6y-24-10y+2y^2}

Simplify \bold{6y-24-10y+2y^2}

\bold{2y^2-4y-24}

7 0
3 years ago
Which is the simplified form of the expression? Question 10 options: 9n – 2 9n + 2 15n – 2 15n – 8
KATRIN_1 [288]

Answer:

Combine -15 + 2n first, then you get -13 n.

Then work from -13n to subtracting -9n, that is -4n. Now all you have left is -4n = 8. Divide both sides by -4n/-4 8/-4. The answer is n = -2.

Step-by-step explanation:

3 0
3 years ago
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