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andreev551 [17]
3 years ago
10

Helppp! pleaseeeeee (solving the system of equations)

Mathematics
1 answer:
Nitella [24]3 years ago
7 0

Answer: x = -3

Step-by-step explanation:

Solve for the first variable in one of the equations, then substitute the result into the other equation.

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BRAINLIEST!!! PLEASE HELP..!!
amm1812

Answer:

2nd choice:

x int: 11/6

y int: 11/2

Step-by-step explanation:

put 6x + 2y = 11 into y = mx+b form to find y intercept. (b stands for the y int)

you get y = -3x + 11/2.

now you can graph with this.

plug 0 in for y and solve for x to find x int

0 = -3x + 11/2 then solve

7 0
3 years ago
What degree rotation mapped R(5,-6) to R’(6,5)?
alex41 [277]

Answer:

90 degrees counter-clockwise

Step-by-step explanation:

Hope this helps! :)

6 0
3 years ago
Help me substitution method define variables
Rina8888 [55]
\left \{ {{S=14+L} (I) \atop {S+L=124}(II)} \right.

<span>Substitute (I) into (II), we have:
</span>S+L=124
(14+L)+L=124
14 + 2L = 124
2L = 124 - 14
2L = 110
L =  \frac{110}{2}
\boxed{L = 55}

<span>Replace (II) in (I), we have:
</span>S=14+L
S = 14+ 55
\boxed{S = 69}

Answer:
each student sell: 
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7 0
3 years ago
Simplify the expression
Natalija [7]

Step  1  :

 (23 x 2 -  5) • x 3

Step  2  :

Trying to factor as a Difference of Squares :

  Factoring:  8 x 2-5  

Theory : A difference of two perfect squares,  A2 - B2  can be factored into  (A+B) • (A-B)

Proof :  (A+B) • (A-B) =

        A2 - AB + BA - B2 =

        A2 - AB + AB - B2 =  

        A2 - B2

Answer:

(8 x 2 - 5) • x 3

3 0
3 years ago
How many solutions are there to the following system of equations?
sweet [91]
4x-8y=0 \\&#10;\underline{-3x+8y=-7} \\&#10;4x-3x=0-7 \\&#10;x=-7 \\ \\&#10;4x-8y=0 \\&#10;4 \times (-7)-8y=0 \\&#10;-28-8y=0 \\&#10;-8y=28 \\&#10;y=\frac{28}{-8} \\&#10;y=-\frac{7}{2} \\ \\&#10; \left \{ {{x=-7} \atop {y=-\frac{7}{2}}} \right.

There is one solution to this system of equations. The answer is B.
6 0
3 years ago
Read 2 more answers
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