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Nesterboy [21]
3 years ago
7

Which expression is equivalent to 4(x-3) ?

Mathematics
1 answer:
Lunna [17]3 years ago
5 0

Answer:

To find the answer you just have to solve 4(x-3)

Step-by-step explanation:

4(x-3)=4x-12

So B or 4x-12 is correct.

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Solve the system
Helga [31]
The answer is actually choice A

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

If we add up the equations straight down we will have 0a+2b = 6

Note how adding the 'a' terms gives us 3a + (-3a) = 3a-3a = 0a. The 0a term is really 0 since 0 times anything is 0. So the 'a' terms will go away

The equation 0a+2b = 6 turns into 0+2b = 6 and that simplifies to 2b = 6

To isolate b, we divide both sides by 2

2b = 6
2b/2 = 6/2
b = 3

We can stop here since only one answer choice has b = 3, which is choice A. However, let's keep going to find the value of 'a'

Plug b = 3 into any equation with 'a' and 'b', then solve for 'a'

3a+4b = 9
3a+4*3 = 9
3a+12 = 9
3a+12-12 = 9-12
3a = -3
3a/3 = -3/3
a = -1

So a = -1 and b = 3 pair up to form (a,b) = (-1,3)

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

To check, plug this ordered pair back into both equations

Equation 1:
3a+4b = 9
3*(-1)+4*3 = 9
-3+12 = 9
9 = 9
Equation 1 has been checked out

Equation 2:
-3a-2b = -3
-3(-1)-2(3) = -3
3 - 6 = -3
-3 = -3
this is true as well

So this confirms that the final answer is choice A
8 0
2 years ago
Read 2 more answers
Please help with math
OleMash [197]

Answer:

i think linear

Step-by-step explanation:

let me know if this is wrong

7 0
2 years ago
How to find the x-intercept of of y+12=3(x-9)?
tester [92]
To find the x intercept, sub in 0 for y and solve for x

y + 12 = 3(x - 9)
0 + 12 = 3x - 27
12 = 3x - 27
12 + 27 = 3x
39 = 3x
39/3 = x
13 = x.....so ur x int is 13 or (13,0) <==

and if u wanted to find the y int, u could sub in 0 for x and solve for y
7 0
3 years ago
Whích two of the following expressions is equivalent
kobusy [5.1K]
I cant see the other number your mouse is blocking it
7 0
3 years ago
Can someone answer both of these??
antiseptic1488 [7]

Answer:

The first graph is the last option (y=5/2z) the second graph is the first option (y=5/4z)

Step-by-step explanation:

Find the rise over run

4 0
3 years ago
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