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Eduardwww [97]
4 years ago
12

Please help me. i really need this grade

Mathematics
1 answer:
Elodia [21]4 years ago
3 0
So we have to put the value of 1:3 in a ratio

1 : 3
= 3:y

Ask yourself what do I have to multiply one by to get three ( the answer is three)
Because one side is multiplied by three, you have to multiply the right hand side by three to get y
3*3 is 9

Therefore, the y for 3 hours is 9

Then, we have to make another ratio
1:3
= 5:x

Ask yourself what do I have to multiply by one to get five (the answer is five)
So you multiply the other side by five as well
3*5=15

Therefore, the y for five hours is 15

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JulijaS [17]

Answer:

20

Step-by-step explanation:

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3 years ago
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I have to write a sentence as a equation so what is the answer for Eight less than one third is -13
ad-work [718]
The answer to that would be 1/3-8=-13
8 0
4 years ago
X(x+6)(2x-7)=0 . Which values are solutions to this equation ? Choose all that apply.
ziro4ka [17]

Answer:

A, B, E

Step-by-step explanation:

x(x +6)(2x -7)= 0

For the product of these 3 factors to be equal to zero, one of them (x, x+6, or 2x-7) must be a zero.

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7 0
2 years ago
What is -7/2n=49 how would you find the answer to this fraction
Advocard [28]
-7/2n = 49

First, we need to simplify 7/2n to 7n/2. This will make the problem easier to solve.
- \frac{7n}{2} = 49

Second, since we are trying to get the variable (x) by itself on one side of the problem to equal something, we can start off by multiplying each side by 2. This will get rid of our fraction.
-7n = 49 \times 2

Third, we can go ahead and multiply 49 × 2, which is easily done by a calculator, etc. The answer to 49 × 2 is 98.
-7n = 98

Fourth, let's now divide each side by -7. This will recreate a fraction but we can get our answer very easily from now. Go ahead and put the negative sign in front of the fraction as well.
n =  -\frac{98}{7}

Fifth, our last step is to simplify the fraction. Basically, ask yourself 'what can be multiplied by 7 to equal 98? Or, 98 ÷ 7. The answer either way is 14 (don't forget your negative).
n = -14

Answer: \fbox {n = -14}
7 0
3 years ago
Read 2 more answers
7(3x + 6y) is what ?
babymother [125]

Answer:

21x+42y

Step-by-step explanation:

5 0
4 years ago
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