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Alja [10]
3 years ago
9

Can someone help me it’s due today

Mathematics
1 answer:
Marizza181 [45]3 years ago
6 0

Answer:

C

Step-by-step explanation:

So if x is the number, then 4 times the number would be 4x and adding that to -8 would be 4x + (-8) and then 12 times the number would be 12x, so you have 4x + (-8) = 12.

Then, solve:

4x - 8 = 12x\\

subtract 4x from both sides

-8 = 8x

divide both sides by 8

-1 = x \\x = -1

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Ms. Federman graded 5 papers in 40 minutes. At this rate, how many minutes will it take her to grade 30 papers?
Ksivusya [100]

Answer:

240 minutes

Step-by-step explanation:

If it's 40 minutes for just 5 papers, we need to figure how many minutes it would take to grade just 1. So you have to divide 40 by 5 which is 8. Then 8 time 30 which is 240.

4 0
3 years ago
3) How many whole 3s are there inside of 4½?
tankabanditka [31]

Answer:

1

Step-by-step explanation:

There is one whole 3 inside of 4 1/2 or 4.5.

Multiples of 3 are 3x1=3   3x2=6....

Only a single whole 3 can be inside of 4.5.

5 0
2 years ago
Read 2 more answers
What is the total mass,in kilograms,of the 7rocks
otez555 [7]
How much is the mass of one rock?
Do that first.
I hoped I helped:)
7 0
4 years ago
5x + 7y = 17<br> x + 4y = 19
REY [17]
<h2>Answer:</h2>

5x + 7y = 17 ....(1)

x + 4y = 19 .....(2)

<u>From equation 2</u>

x + 4y = 19

x = 19 - 4y

<u>Putting the value of x in Equation (1)</u>

5(19 - 4y) + 7y = 17

95 - 20y + 7y = 17

- 20y + 7y = 17 - 95

-13y = -78

y = \frac{78}{13}

y = 6

<u>Now, putting the value of y in equation </u><u>(</u><u>2</u><u>)</u>

x + 4y = 19

x + 4(6) = 19

x + 24 = 19

x = 19 - 24

x = -5

<u>Therefore, the value of y is 6 and value of x is -5</u>

5 0
3 years ago
hat are the solutions to the equation |x| = 2? Choose all answers that are correct. A. B. C. D.
zalisa [80]
Easy, so absolute value makes anything inside into positive
|x|=2
therefor x=-2 or x=2 since  it would be made posotive

answer is -2 and 2

6 0
3 years ago
Read 2 more answers
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