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aev [14]
2 years ago
9

Solve system by elimination -9x+7y=22 9x-5y=-26

Mathematics
1 answer:
alisha [4.7K]2 years ago
3 0

Answer:

The solution would be (-4, -2)

Step-by-step explanation:

To find this simply add the two equations together.

-9x+7y=22

9x-5y=-26

----------------

2y = -4

y = -2

Now we have the y value, we can solve for the x value.

9x-5y=-26

9x-5(-2)=-26

9x+10=-16

9x=-36

x = -4

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3 years ago
An engineer scale model shows a building that is 3 inches tall. If the scale is 1 inch = 600 feet, how tall is the actual buildi
Sever21 [200]

The actual height of building is 1800 feet.

Step-by-step explanation:

Given,

Height of building in model = 3 inches

Scale used by engineer;

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Therefore;

Actual height of building = Height in model * Scale used

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Actual height of building = 1800 feet

The actual height of building is 1800 feet.

8 0
3 years ago
1. Find the mean for 2, 5, 9, 4
Reil [10]

Answer:

Answer 1. 5     Answer 2. 60   Answer 3. 37

Step-by-step explanation:

6 0
2 years ago
Read 2 more answers
Help? I'm not exactly sure how to do this :/
uranmaximum [27]
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6 0
2 years ago
Perry borrows $350 at a simple interest rate of 4.5%. Perry pays back the loan in 30 months. How much interest does Perry pay on
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Answer: the interest on the loan is $39.38

Step-by-step explanation:

The formula for determining simple interest is expressed as

I = PRT/100

Where

I represents interest paid on the loan.

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R represents interest rate

T represents the duration of the loan in years.

From the information given,

P = $350

R = 4.5%

There are 12 months in a year. Converting 30 months into years, it becomes

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Therefore

I = (350 × 4.5 × 2.5)/100

I = $39.38

3 0
3 years ago
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