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S_A_V [24]
3 years ago
10

Solve the system of linear equations below.

Mathematics
1 answer:
matrenka [14]3 years ago
8 0

Answer:

A. x=4 y=11

Step-by-step explanation:

y=x+7

y=-2(y-7)+19

y=-2y+14+19

y=-2y+33

y+2y=33

y(1+2)=33

y=33/3

y=11

x=4

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Neko [114]

Answer:

16

Step-by-step explanation:

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divide by 3 to get each side: 21/3 = 7 = Y

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7 0
3 years ago
A new car is purchased for 24600 dollars. The value of the car depreciates at 5.5% per year. To the nearest year, how long will
boyakko [2]

Answer:

The number of years until the value of the car is 11300 dollars is 9 years.

Step-by-step explanation:

This can be calculated using the following formula:

Value of the Car = Purchase cost - (Annual depreciation expenses * N) ........ (1)

Where;

N = Number of years until the value of the car is 11300 dollars

Purchase cost = $24,600

Annual depreciation rate = 5.5%

Annual depreciation expenses = $24,600 * 5.5% = $1,353

Value of the car = $11,300

Substituting the value into equation (1) and solve for N, we have:

$11,300 = $24,000 - ($1,353 * N)

$1,353 * N = $24,000 - $11,300

$1,353 * N = $12,700

N = $12,700 / $1,353

N = 9.38654841093865

Rounding to the nearest year as required by the question, we have:

N = 9

Therefore, the number of years until the value of the car is 11300 dollars is 9 years.

Step-by-step explanation:

4 0
3 years ago
The relationship between the number of pencils and the number of pens in Sophie’s pencil case can be represented using the ratio
tekilochka [14]

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D is not equivalent




4 0
3 years ago
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DaniilM [7]
Put the second equation so it's in y= form, it should be the same :)
7 0
3 years ago
A triangle has a base of 4x-7 and a height of 2x + 3. Find the area.
wolverine [178]

Answer:

area = ‐11

Step-by-step explanation:

hope this is correct and helps

7 0
3 years ago
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