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bazaltina [42]
3 years ago
9

What is the result of subtracting the second equation from the first?

Mathematics
1 answer:
saul85 [17]3 years ago
7 0

Answer:

11x-8y=-9

Step-by-step explanation:

we have

8x-4y = -4 ----> First equation

-3x+4y=5 ----> Second equation

we know that

To subtract the 2nd equation from the first, negate all three of the second equation terms:  3x-4y=-5

and then adds this result with the first equation

8x-4y = -4\\3x-4y=-5\\-------\\8x+3x-4y-4y=-4-5\\11x-8y=-9

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Find the slope of the line throgh each pair of points
svlad2 [7]

Answer:

19/24

Step-by-step explanation:

slope = rise/run = (y1 - y2) / (x1 - x2)

s = (19 - 0) / (8 - -16)

s = 19/24

4 0
3 years ago
Hellen is using 3.508 grams of copper for her science experiment. How many kilograms of copper did Hellen use for her science ex
mash [69]

Answer:

.003508 kg of copper

Step-by-step explanation:

1000 grams = 1 kg

3.508 g/1000 g = .003508 kg

7 0
3 years ago
Can somebody help with this problem?
Anastasy [175]

Answer:

x=-5 or -5

Step-by-step explanation:

x - 4 = 2x + 1

Subtract x from both sides canceling out the x on the left, getting...

-4 = x + 1

Then subtract the 1 from both sides canceling out the 1 on the right, getting...

-5 = x

Subtracting x from 2x gets you 1x which you just write as x because there is only one x. Doing the equation from the other side will still get you the same answer and I will show you.

x - 4 = 2x + 1

-x - 4 = 1

-x = 5

x = -5

Hope this helps!

4 0
3 years ago
write and equation in slope intercept form for the following scenario. andy’s rental car charges an initial fee of $20 plus an a
Elza [17]

Answer:

y = 30x + 20

Step-by-step explanation:

y = mx + b

find b

b=20

find m

m=30

8 0
3 years ago
How do you do 4(x-3) you have to use distributive property to remove the parentheses..
Oksana_A [137]

Answer:

 4x -12

Step-by-step explanation:

Your question answers itself: you use the distributive property to remove the parentheses.

  4(x -3) = 4(x) +4(-3) = 4x -12

5 0
3 years ago
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