3 years ago

What does -12 - (-7) equal?

Mathematics

2 answers:

Arlecino [84]3 years ago

8 0

The answer to this is -5 because 2 negatives = a positive

dolphi86 [110]3 years ago

7 0

-5 is the answer.

when subtracting a negative number, it is essentially the same as adding. so n-(-3) is the same as n+3 as two negative make a positive. if that makes sense. :) hope I helped

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Find three consecutive even integers such that 4 times the third integer is 4 more than the 3 times the first integer plus two t

musickatia [10]

Let lowest integer be n then

4(n + 4) = 3n + 2(n + 2) + 4

4n + 16 = 5n + 8
8 = n

so three integers are 8,10 and 12.

4 0

3 years ago

If there are 35 yellow books in the bookcase, then how many green books are in the bookcase

alukav5142 [94]

ANSWER

D. 14

EXPLANATION

The ratio of the books in the book case are:

Red:Yellow:Green=3:5:2

The number of yellow books in the book case is 35.

If 5 corresponds to 35, then 2 green books will correspond to a less number of books,

By proportion, because it is going to be less more will divide.

The number of green books in the book case is

$= \frac{35 \times 2}{5}$

$= 7 \times 2 = 14$

7 0

3 years ago

Pls answer this pls i’m gonna die

Naily [24]

It 's an isosceles triangle if you look carefully. 2 Sides of the triangle are equal which is denoted by those marks. The angles opposite to the equal sides are always equal, so: $m\angle FST = 64^\circ$