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3 years ago

A whole number is represented by n. which statement is true about n and -n?

Mathematics

2 answers:

alukav5142 [94]3 years ago

8 0

Answer is A
You can plug numbers in to check:
a) n=5
5+(-5)=0

b)n=5
5-(-5)=5+5=10

c) n=5
5(-5)=-25

d)n=5
5/-5=-1

soldi70 [24.7K]3 years ago

4 0

Answer: A and B

Explanation: A sum is an answer to an addition problem and a difference is the answer to a subtraction problem. N is the sum to the addition problem and -n is the answer to a subtraction problem.

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Leo has a lock box with a volume of 312 cubic inches. The box is 4 inches high and 13 inches long. What is the width of the box?

natima [27]

Answer:

6in

Step-by-step explanation:

Given data

Volume of the lockbox= 312 cubic inches

Height= 4in

Length= 13in

Width= ???

The expression for the volume of box is

V= L*W*H

substitute

312=13*W*4

312=52W

W= 312/52

W=6 in

Hence the width is 6in

6 0

3 years ago

Holly missed 6 of 181 school days this year. Approximately what percent of school days was Holly in attendance?

Natasha2012 [34]

$181-6=175\\\\\frac{175}{181}\cdot100\%=\\\\\frac{17500}{181}\%=\\\\96.7\%\approx97\%\\\\Answer\ C$

4 0

3 years ago

(Pls help) I need help finding x!

Ray Of Light [21]

Answer:

x ≈ 46°

Step-by-step explanation:

Since the triangle is right use the sine ratio to solve for x

sinx = $\frac{opposite}{hypotenuse}$ = $\frac{10}{14}$ , hence

x = $sin^{-1}$ ( $\frac{10}{14}$ ) ≈ 46°

8 0

2 years ago

Jim is selling hot dogs at a ball game. It cost Jim $250 to purchase everything to make the hot dogs. Jim sells hot dogs for $2.

Olegator [25]

So since he is wasting money to purchase everything you won't be gaining but loosing so 250-2h= P bc it's $2 for every hot dog and you are losing again

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3 years ago

Find the value of x<br> A- 6<br> B-5<br> C-4<br> D-10

Snezhnost [94]

Answer:

x=4

Step-by-step explanation:

In triangle MLK