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Angelina_Jolie [31]
3 years ago
8

Is the set of multiples of 4 closed under addition? Explain why or provide a counterexample if not.

Mathematics
1 answer:
ad-work [718]3 years ago
4 0
The right answer for the question that is being asked and shown above is that: "B. Yes, because the sum of any two multiples of 4 is also a multiple of 8." <span>the set of multiples of 4 closed under addition</span>
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The area of a square is 84 square inches. What is the length, in inches, of one side of the square? Represent your answer using
Crazy boy [7]
The are of a square is determined by squaring the side. And the length will hence, be determined by square rooting the area. 
∴ length of this square is = √84 = 9.165
3 0
3 years ago
Given 16 = −5 + z4solve for z
AysviL [449]
Hi,

16 = - 5 + z4 \\ - 4z + 16 = - 5 \\ - 4z = - 5 - 16 \\ - 4z = -21

Now just divide both sides of equation by -4.

z = \frac{21}{4}

Simplify:

z = 5 \frac{1}{4} \: \: \: \: \: \: \: \: \: \: \: \: \: fraction \: result

Decimal form:

z = 5.25 \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: decimal \: result

Hope this helps.
r3t40
8 0
3 years ago
Read 2 more answers
Factor out the GCF -2x^2 - 4x - 6
andrew-mc [135]

The Greatest Common factor(GCF) of -2x^2-4x-6 is -2(x+1)(x-3)

<h3>What is Greatest Common Factor?</h3>

The greatest common factor (GCF) is the largest factor two or more numbers have in common

From the question,

-2x^2-4x-6

By collecting like terms

-2(x^2-2x-3)

By factoring x^2-2x-3

-2(x^2-3x+1x-3)

Collecting like terms

-2(x^2-3x)+(x-3)

-2(x(x-3)+1(x-3))

-2(x+1)(x-3)

hence  -2(x+1)(x-3) is the Greatest Common factor of  -2x^2-4x-6 is

Learn more about Greatest Common factor on:brainly.com/question/219464

#SPJ1

3 0
1 year ago
Only answer question 2
Bezzdna [24]
B. $30

to find out how much $ she earned per day, all you have to do is divide $2,100 by 70, which is $30.

i hope this helps!!
3 0
3 years ago
Read 2 more answers
24=12 18=9 14=7 8=4 6=?
BartSMP [9]
Each pair of numbers gives a value then another value that is 1/2 of the first. So the answer would be

6 = 3
5 0
3 years ago
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