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Leni [432]
3 years ago
7

Which equation results from adding the equations in this system?

Mathematics
1 answer:
eimsori [14]3 years ago
3 0

Answer: 3x=3

Step-by-step explanation: Let's divide this into parts--

1. Adding the x variables: -2x+5x or 5x-2x = 3x.

2. Adding the y variables: y-y or -y+y = 0. (The negative and the positive y cancel each other out.)

3. Adding the numbers: 8-5 or -5+8 = 3.

Now just put it back into an equation: 3x + 0 = 3.

We don't need to add the 0, so the equation changes into 3x = 3.

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Fill in the blanks to complete the area model to solve 6.60 divided by 15 is the same as _ x ? = _ 6.60 = _ hundredths
storchak [24]

Answer:

15 x = 6.60

x = 44\ hundredths

Step-by-step explanation:

Given

\frac{6.60}{15}

Required

Complete the model

[ ] x = 6.60

x = _ hundredths

\frac{6.60}{15}

Equate to x

x = \frac{6.60}{15}

Multiply both sides by 15

15 * x = \frac{6.60}{15} * 15

15 * x = 6.60

15 x = 6.60

So, we have:

[ ] x = 6.60 =====> 15 x = 6.60

Recall that:

x = \frac{6.60}{15}

x = 0.44

This implies that:

x = 44\ hundredths

Hence:

x = _ hundredths =====> x = 44\ hundredths

3 0
3 years ago
The Lewis family and the Perry family each used their sprinklers last summer. The water output rate for the Lewis family's sprin
Rashid [163]

The Lewis family and the Perry family each used their sprinklers last summer. The water output rate for the Lewis family's sprinkler was 15 L per hour. The water output rate for the Perry family's sprinkler was 40 L per hour. The families used their sprinklers for a combined total of 65 hours, resulting in a total water output of 1850 L . How long was each sprinkler used

Answer:

Hours of use of sprinkler by Lewis family is 30 hours.

Hours of use of sprinkler by Perry family is 35 hours.

Step-by-step explanation:

Let W = hours of use by Lewis family

65 - W = hours of use by Perry family

Then;

15W + 40*(65 - W) = 1850

15W + 2600 - 40W = 1850

(15 - 40)W = 1850 - 2600

-25W = −750

W = 750/25 = 30

Therefore;

W = 30

65 - W = 65 - 30 = 35

Hence,

Hours of use by Lewis family is 30 hours.

Hours of use by Perry family is 35 hours.

3 0
3 years ago
If (x/3)-1 is twice as large as (x/4)-3, what is the value of x?
Ganezh [65]

Answer:

30

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
Solve the inequality 13x - 4 < 12x - 1.
Nastasia [14]
The answer is B) x>3
13x - 4 < 12x - 1
13x > 12x + 3
x > 3
8 0
3 years ago
How o I get the awnser to 9s+3=57 I need help asap im in 8th grade
PIT_PIT [208]
First subtract 3 from both sides of the equal sign. 
9s + 3 = 57
      - 3     -3
9s = 54

Then divide both sides by 9.
9s = 54
/9     /9
s = 6

You can check it by plugging it back into the equation.
9s + 3 = 57
9 * 6  + 3= 57
54 + 3 = 37
57 = 57
Yep! It's correct! :)

Hope that helped. Algebra can be tricky sometimes I know but it's really just balancing equations. 
3 0
4 years ago
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