B / -7 = 4 solve question correctly

Mathematics

2 answers:

Aleks [24]3 years ago

8 0

Answer: -28

Variable/unknown - B

Numbers we know: -7 and 4.

How to solve: Use inverse division. The inverse of division is multiplication.

<em>7 has a negative sign. However, 4 is positive.</em>

N + P = N

P + N = N

Rules of integers:

If both the signs of the two numbers are the same, it will be positive.
If both the signs of the two numbers are different, it will be negative.

-7 is negative.

4 is positive.

Formula: N + P = N

-7 x 4 = -28

Final answer: -28

Shkiper50 [21]3 years ago

4 0

Answer:

b/-7=4

b=4*-7

b= - 28

Step-by-step explanation:

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Lisa and Ann are eating a box of crackers. Lisa eats 3/6 of the box,and Ann eats 1/4 of the box.How much of the box did the two

Rufina [12.5K]

<h2>Lisa and Ann ate 3/4 of the box together</h2>

<em><u>Solution:</u></em>

Given that,

Lisa and Ann are eating a box of crackers

$Lisa\ ate = \frac{3}{6}\\\\Ann\ ate = \frac{1}{4}$

<h3><u>How much of the box did the two girls eat together?</u></h3>

$Together\ eaten = Lisa\ ate + Ann\ ate\\\\Together\ eaten = \frac{3}{6} + \frac{1}{4}\\\\Together\ eaten = \frac{1}{2} + \frac{1}{4}\\\\Together\ eaten = \frac{1 \times 2}{2 \times 2} + \frac{1}{4}\\\\Together\ eaten = \frac{2}{4} + \frac{1}{4}\\\\Together\ eaten = \frac{3}{4}$