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OLEGan [10]
3 years ago
14

You are given the system of equations to solve by the elimination method, which is an INCORRECT step that will NOT produce a sys

tem with the same solution? x + 2y = 7 2x − 5y = 5 A) add 5 times the first equation and 2 times the second equation B) multiply the first equation by 2 and subtract the second equation C) multiply the first equation by −2 and add the second equation D) multiply x by 2 in the first equation and subtract the second equation
Mathematics
2 answers:
KonstantinChe [14]3 years ago
7 0

Answer:

D

Step-by-step explanation:

If you're doing to multiply a value by a number, ALL terms in the equation must be multiplied by the same value otherwise you do not have a correct equation.

Ugo [173]3 years ago
6 0

Answer:

D) multiply x by 2 in the first equation and subtract the second equation

Step-by-step explanation:

When you are trying to solve a system of equations you have to eliminate one of the terms so you´ll end up with only a one term equation that is solvave, in this case if you multiply X by 2 you can actually eliminate X from that equation, but by not multiplying all the terms on the equation you end up with a whole different equation and the result wont be accurate.

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1. Write the equation of the line best fit
Pavel [41]

Answer:

y=3/4x+2

Step-by-step explanation:

I found this by using desmos graphing calculator

8 0
3 years ago
Explain why triangle abc is similar to triangle ade.
mihalych1998 [28]

Answer:

They are both right triangles

Step-by-step explanation:

The triangles are both the same shape but one is bigger than the other.

5 0
4 years ago
Hello, I really struggle with math and I was wondering if you could help me with the following problem please? It will be much a
xz_007 [3.2K]

Answer:

x=7

Step-by-step explanation:

Simplifying

3x + 2(4 + 6x) = 113

3x + (4 * 2 + 6x * 2) = 113

3x + (8 + 12x) = 113

Reorder the terms:

8 + 3x + 12x = 113

Combine like terms: 3x + 12x = 15x

8 + 15x = 113

Solving

8 + 15x = 113

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '-8' to each side of the equation.

8 + -8 + 15x = 113 + -8

Combine like terms: 8 + -8 = 0

0 + 15x = 113 + -8

15x = 113 + -8

Combine like terms: 113 + -8 = 105

15x = 105

Divide each side by '15'.

x = 7

Simplifying

x = 7

5 0
3 years ago
Read 2 more answers
Help ASAP, NO LINKS OR YOU WILL BE REPORTED!! WILL GIVE BRAINIEST!
NeTakaya

Answer:

Question.... Why no links, i wont give you any, but why does everyone dislike links? Just so u know in am 9 and i am in high school :)

Step-by-step explanation:

7 0
3 years ago
(10-P) Help please, thanks.
Anuta_ua [19.1K]
The formula of linear equation is:
y1  -  y2 = m(x1  -  x2)
Where
x1 and x2: x coordinates(-1 and 3)
y1 and y2: y coordinates(-2 and 10)
m is the slope

We can then choose a point from the line to find the eqaution.

We need to first find the slope:
\frac{y1 - y2}{x1 - x2}
In this case:
\frac{ - 2 - 10}{ - 1 - 3}   \\ =  \frac{ - 12}{ - 4}  \\  = 3

In this case, as the y2 is given as 1,put (-1,-2) , and the slope(3 )into the eqaution :

y-(-2) = 3(x-(-1))
y+2 = 3(x+1)

Therefore
y + 2 = 3x + 1
is the answer.

Hope it helps!
7 0
3 years ago
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