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lbvjy [14]
3 years ago
14

У = 2x X + y = 9 Solve please

Mathematics
1 answer:
pochemuha3 years ago
6 0

Answer:

(3, 6) or x = 3 and y = 6

Step-by-step explanation:

у = 2x, x + y = 9 (using substitution)

x + 2x = 9

3x = 9

x = 3

y = 2x

y = 2(3)

y = 6

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What is the solution to the system of equations?
s344n2d4d5 [400]

Answer:

(3,2)

Step-by-step explanation:

Here's your given:

y = 4x - 10

y = 2

Because they both equal y, that means they equal each other:

2 = 4x - 10

Add 10 on both sides:

12 = 4x

Then, divide 4 on both sides:

3 = x

This represents the x coordinate.

Normally you would put this value into one of the equations to figure out y, but they already gave us that in the beginning:

y = 2

This represents the y coordinate.

Put the two values together to get: (3,2)

5 0
3 years ago
when nancy started middle school, she was 60 inches tall. when she started high school, she was 66 inches tall. what was the per
Ivahew [28]

Answer:

The percent change in Nancy height is 10%

Step-by-step explanation:

Given : when Nancy started middle school, she was 60 inches tall. when she started high school, she was 66 inches tall.

We have to find the percent change in her height.

Percentage change is given by the ratio of the difference in old value and new value to the old value times 100

Mathematically written as

Percentage\ change =\frac{new\ value-old\ value}{Old\ value}\times 100

For the given data,

Old value = 60 inches

New value = 66 inches

Thus, the Percentage change is given as,

Percentage\ change =\frac{66-60}{60}\times 100

Simlify, we have,

Percentage\ change =\frac{6}{60}\times 100

Thus, The percent change in her height is 10%

7 0
3 years ago
Read 2 more answers
What is 3.727? Plz help ASAP plz
Galina-37 [17]

Answer:

3 727/1000

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First, the ones place is 3, so we already know that

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There are 3 decimal spaces, so that means thousandths

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2 years ago
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Mandarinka [93]

Hi!

Since there are currently 8 bags on the top shelf, the remaining 25 should divide by 3, and the closest number is 8.

Hope this helps!

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3 years ago
Which of the following is a solution for the inequality 2x < 9?
Firdavs [7]
The answer is x<9/2
hope it helps
8 0
3 years ago
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