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3 years ago

14

Solve this equation please ! −2 − (+7) = ?

1 answer:

olga55 [171]3 years ago

5 0

-2 - (+7) =
-2 - 7 =
-9
<3

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How do I solve this?

patriot [66]

You already know that y equals -4. It says that x equals 3, so multiply the -4 by 3 and because it has a negative number and a positive number it will equal -12. Remember anytime you see a letter after a number it means multiply. The complete problem should be -10 because 2 is a whole number you subtract it from -12. Hope that helped you out some.

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3 years ago

What is the greatest common factor of 42,28 and 70?

eduard

Answer:

the greatest common factor would be 14 . Hope this helped

Step-by-step explanation:

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3 years ago

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What is the volume of the pyramid 7x7x8

dolphi86 [110]

Answer:

The volume of the pyramid is $130\frac{2}{3}\ units^{3}$

Step-by-step explanation:

we know that

The volume of the pyramid is equal to

$V=\frac{1}{3}BH$

where

B is the area of the base

H is the height of the pyramid

<em>Find the area of the base B</em>

In this problem we have a square base

$B=7^{2} =49\ units^{2}$

we have

$H=8\ units$

substitute

$V=\frac{1}{3}(49)(8)=\frac{392}{3}\ units^{3}$

Convert to mixed number

$\frac{392}{3}=\frac{390}{3}+\frac{2}{3}=130\frac{2}{3}\ units^{3}$

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3 years ago

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Factor –7x3 21x2 3x – 9 by grouping. what is the resulting expression? (3 – 7x)(x2 – 3) (7x – 3)(3 x2) (3 – 7x2)(x – 3) (7x2 – 3

juin [17]

The factors of the expression are $\rm(3 - 7x^2)(x - 3)$

<h3>How to find factors in the expression?</h3>

First group the first two terms and the last two terms together respectively.

The factors of the expression are given by;

$\rm= -7x^3 + 21x^2 + 3x - 9\\\\=-7x^2(x - 3) + 3(x - 3)\\\\=(3 - 7x^2)(x - 3)$

Hence, the factors of the expression are $\rm \rm(3 - 7x^2)(x - 3)$ .

To know more about factors click the link given below.

brainly.com/question/9645056

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2 years ago

The price of milk has been increasing by 4% per year. If he gallon of milk cost exactly 3 dollars right now, how much should it

Alisiya [41]

Answer: 3.48
Explanation: It’ll increase by 0.12 every year!

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3 years ago