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2 years ago

6 more than the product of a number x and 5 is 21

Mathematics

1 answer:

fgiga [73]2 years ago

4 0

Answer:

x = 3

Step-by-step explanation:

6 + 5x = 21

5x = 15

x = 3

I hope this helps

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Simplify the expression 6ab + 3ab - 7ab. What is the coefficient of the simplified expression?

Bad White [126]

Simplifying 6ab + 3ab - 7ab
so we can write it
6ab + 3ab - 7ab = 0 ( because there is nothing on right side )
9ab - 7ab = 0
2ab = 0
So the coefficient of ab is 2.

Correct option is C.

8 0

3 years ago

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Which ordered pair (a, b) is a solution to the given system of linear equations? -2a+3b=14

Stels [109]

Answer:

The solution of the system is the ordered pair (-13,-4)

Step-by-step explanation:

we have

$-2a+3b=14$ -----> equation A

$a-4b=3$ ----> equation B

Solve the system by elimination

Multiply by 2 both sides equation B

$2(a-4b)=2(3)$

$2a-8b=6$ ----> equation C

Adds equation A and equation C

$-2a+3b=14\\2a-8b=6\\-------\\3b-8b=14+6\\-5b=20\\b=-4$

Find the value of a

substitute the value of b in any equation (i take equation B)

$a-4(-4)=3$

$a+16=3$

$a=-13$

therefore

The solution of the system is the ordered pair (-13,-4)

6 0

3 years ago

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What is 68 million squared.

kobusy [5.1K]

Answer:

4.624e+15

Step-by-step explanation:

I think this is the correct answer may be wrong

6 0

3 years ago

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How do I evaluate this? there’s a picture.

PilotLPTM [1.2K]

Answer:

it is 3/3

Step-by-step explanation:

2 tan is 2/3 +cos is 1/4 +2/4

7 0

3 years ago

7. If U= {2, 4, 6, 8, 10, 12, 14, 16} and A = {6, 10, 14}, what is A'?

Tresset [83]

The compliment of set A that is A' is equal to {2, 4, 8, 12, 16}.

We are given the universal set as:

U = {2, 4, 6, 8, 10, 12, 14, 16}

We are also given that set A is:

A = {6, 10, 14}

We need to find A'

For this, we will subtract set A from the universal set, U.

So, we get that:

A' = U - A

A' = {2, 4, 6, 8, 10, 12, 14, 16} - {6, 10, 14}

Solving the expression, we get that:

A' = {2, 4, 8, 12, 16}

Therefore, we get that, the compliment of set A that is A' is equal to {2, 4, 8, 12, 16}.

Learn more about sets here:

brainly.com/question/2166579

#SPJ9

5 0

1 year ago