A student is trying to solve the set of two equations given below:Equation A: x + z = 6
Equation B: 2x + 3z = 1

Which of the following is a possible step used in eliminating the z-term? (5 points)

Multiply equation B by 3.
Multiply equation A by 2.
Multiply equation B by 2.
Multiply equation A by –3.

Answers

Answer 1

Answer: Equation A : x + z = 6
Equation B : 2x + 3z = 1

Possible step used in eliminating in z-term.

Multiply equation A by -3.

-3(x +z) = -3(6)
-3x - 3z = -18

-3x - 3z = -18
2x + 3z = 1
-x = -17
÷ -1 ÷ -1
x = 17

Answer 2

Answer:

Answer:

x=17 other answer expert verified (sniff, sniff) breaks out in tears

(bad joke)

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Two lines, C and D, are represented by the equations given below:Line C: y = x + 12
Line D: y = 3x + 2

Which of the following shows the solution to the system of equations and explains why?

(4, 14), because one of the lines passes through this point
(4, 14), because the point lies between the two axes
(5, 17), because both lines pass through this point
(5, 17), because the point does not lie on any axis

Answers

Bought lines need to pass same point, so:

x+12 = y = y = 3x+2
x+12=3x+2 |-2
x+10=3x |-x
10=2x |/2
5=x
x+12 = y => 5+12 = y =>y = 17

(x,y) => (5,17)

Answer:

5,17

Step-by-step explanation:

Only 5 questions. I really need the help plz help me.

Answers

1. Substraction Property of Order ;
2. Multiplication Property of Order ;
3. Addition Property of Equality ;
4. Division Property of Equality ;
5. ( 1 / 2 )x = 10
x = 20

How do I solve this problem? 6m+3(2m+5)+7

Answers

The final expression will be 12m + 22 .

Given,

6m+3(2m+5)+7

Here,

6m+3(2m+5)+7

To solve the above expression firstly open the brackets by multiplying 3 inside the bracket .

So,

6m + 6m + 15 + 7

Now add the the terms having similar variables ,

So,

6m and 3m will be added,

= 12m

Now add the constant terms,

15 + 7 = 22

Thus the final expression will be ,

12m + 22

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1. Combine like terms. So, combine the numbers with a variable. Then the numbers without variables. (Also known as simplifying the expression)

6m+3(2m+5)+7
12m+22

Mike bought an MP3 player for $150. The sales-tax rate was 8 percent. How much sales tax did he pay on the MP3 player?

Answers

.08 x 150 = 12, He paid $12 sales tax :)

8. ×150$=8×150=1200
-- ------- ------ 100. 100. 100
=12$
150$-12$
=138$

What number should both sides of the following equation be divided by to solve for x?(6.4) x = 32

A.4
B.6.4
C.6
D.5

Answers

In order to solve the equation (6.4)x = 32 divided by 6.4 on both sides option (B) is correct.

What is a linear equation?

It is defined as the relation between two variables, if we plot the graph of the linear equation we will get a straight line.

If in the linear equation, one variable is present, then the equation is known as the linear equation in one variable.

We have an equation in one variable:

(6.4)x = 32

Divide by 6.4 on both sides in order to find the value of x:

[(6.4)x]/6.4 = 32/6.4

x = 5

Thus, in order to solve the equation (6.4)x = 32 divided by 6.4 on both sides option (B) is correct.

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Th corrrect answerr is b

If a movie starts at 7:00 and runs for a 108 minutes what time does it end

Answers

108 minutes gives us 1 hour and 48 minutes.
Adding this to the starting times gives us the answer
i.e 8.48 am/pm

Final answer:

The movie will end at 8:48 PM.

Explanation:

The movie starts at 7:00 and runs for 108 minutes. To find the end time, we add the duration of the movie to the starting time. Since 108 minutes is equal to 1 hour and 48 minutes, the movie will end at 8:48 PM.

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