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4 years ago

Which equation has solution x = -3?

Mathematics

2 answers:

lianna [129]4 years ago

5 0

D would be the answer
Hipe this helps.
Thanks.

Irina-Kira [14]4 years ago

5 0

Substitute all x's:

a. -6 - 7 = -6 + -7 = -13. Choice A is wrong
b. -9 + 8 = -1. Choice B is wrong
c. -36 + 8 = -26. Choice C is wrong
d. 1/2(-6 - 6) = -6. Choice D is correct.

-6 - 6 = -6 + -6 = -12
-12 / 2 = -6

The answer is choice D.

Hope this helped☺☺

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What is the greatest common factor of 90, 126, 180 and 990?

mylen [45]

9514 1404 393

Answer:

Step-by-step explanation:

90 = 18·5

126 = 18·7

180 = 18·10

990 = 18·55

The greatest common factor of these numbers is 18.

<em>Comment on the GCF</em>

It can be useful to know Euclid's algorithm for finding the GCF:

Determine the remainder from dividing the larger number by the smaller.
If the remainder is zero, the smaller number is the GCF. If the remainder is non-zero, use it to replace the larger number and repeat from step 1.

For example, 126 mod 90 = 36; 90 mod 36 = 18; 36 mod 18 = 0, so 18 is the GCF of 126 and 90. (The modulo function 'mod' returns the remainder from division.)

3 0

3 years ago

Manuel pays $ 500 per year fees to his homeowner's association. Next year, the association is increasing its fee by 5%

tigry1 [53]

Answer:

525

5 percent of 500 is 25

25 + 500=525

5 0

3 years ago

Chris has 115$ to spend at a shopping mall . If he decides to spend $42 on clothing and $37 on food how much money will he have

Katena32 [7]

Answer:

$36 left

Step-by-step explanation:

42+37=79

115-79=36

7 0

3 years ago

On Friday, a fruit stand sold a total of 92 apples and oranges. On Saturday, the fruit stand sold four times the number of apple

andreev551 [17]

Option A : a+o = 92 , 4a+2o = 284 is the right answer

Step-by-step explanation:

Let o be the number of oranges sold on Friday and

a be the number of apples sold on Friday

So,

A total of 92 was sold on Friday will yield the equation

$a+o = 92$

On Saturday,

4 times the number of apples = 4a

2 times the number of oranges = 2o

So,

$4a+2o = 284$

Hence,

The system of equations is:

$a+o = 92\\4a+2o = 284$

Option A : a+o = 92 , 4a+2o = 284 is the right answer

Keywords: Linear equations, variables

Learn more about linear equations at:

#LearnwithBrainly

5 0

4 years ago

PLEASE HELP ME!! I’m already stressed out and I don’t need people getting on here just for points

Arte-miy333 [17]

Answer:

78.5

Step-by-step explanation:

Formula to find area of a circle: A= pi*raduis to the second power

3.14* $5^{2}$

First you square the 5

You do this by multiplying 5 times itself

3.14*25

Then you multilpy 3.14 and 25

78.5

7 0

3 years ago