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zaharov [31]
3 years ago
12

A student is trying to solve the system of two equations given below:

Mathematics
2 answers:
eimsori [14]3 years ago
7 0
(y+z=6) * -5 is the best answer because when you add the two equations together the y will cancel and you will be left with z's in the equation.
netineya [11]3 years ago
3 0

Answer:

The answer is B.

Step-by-step explanation: Lol Its been 4 years already since you asked. But i took the test so thats how i know.

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8. Solve the system using elimination.<br> 3x - 4y = 9<br> - 3x + 2y = 9
olga nikolaevna [1]

Answer:

3x−4y=9 −3x+2y=9

Add these equations to eliminate x: −2y=18

Then solve−2y=18

for y: −2y=18 −2y −2 = 18 −2 (Divide both sides by -2)

y=−9

Now that we've found y let's plug it back in to solve for x.

Write down an original equation: 3x−4y=9

Substitute−9for y in 3x−4y=9: 3x−(4)(−9)=9

3x+36=9(Simplify both sides of the equation)

3x+36+−36=9+−36(Add -36 to both sides)

3x=−27 3x 3 = −27 3 (Divide both sides by 3) x=−9

Answer: x=−9 and y=−9

Hope This Helps!!!

4 0
3 years ago
A bathtub is being filled at a rate of 4 liters per minute. Can this situation be
geniusboy [140]

Answer:

<em>Yes, this is a linear function because the rate of change is constant</em>

Step-by-step explanation:

<u>Linear Functions</u>

We can recognize a linear relation between variables x and y when they can be represented by a formula like

y=mx+b

Where m is the rate of change and it has a constant value. More specifically, a proportional relationship is a special case where b=0, meaning that every value of y divided by the corresponding value of x, is constant.

The situation described in the question says a bathtub is being filled at a rate of 4 liters per minute. It means that every minute, 4 liters are constantly being added to the existing quantity. This is a constant rate of change, so the correct answer is

"Yes, this is a linear function because the rate of change is constant"

3 0
3 years ago
Help number 16 sos please
natta225 [31]
The answer is 0.4722. I hope this helps :)
5 0
3 years ago
the population of a town today is 50000 people if the population decreased by 5% a year what will the towns population be in 10
kramer

The population of the town in 10 years would be 29,937.

5 0
3 years ago
B/ 21 Marks
Serggg [28]

Answer:

y = 3x + 1.

Step-by-step explanation:

The slope is y2-y1/x2-x1

= 10/1/ 3-0

= 9/3

= 3.

Using the point-slope form for a straight line:

y-y1 = m(x-x1)     (m = slope)

y - 10 = 3(x - 3)

y - 10 = 3x - 9

y = 3x - 9 + 10

y = 3x + 1  is the required equation.

5 0
3 years ago
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