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NNADVOKAT [17]
3 years ago
6

What are the solutions to the following system of equations? Select the correct answer below.

Mathematics
2 answers:
Galina-37 [17]3 years ago
7 0
Is it really <span>x2 − 2x because that will not work.
</span>
Evgen [1.6K]3 years ago
7 0
First we take the first equation y=x2 - 2x +4 and substitute it for the value of y in the second equation...giving us, 8X + (x^2 - 2x +4) = 20
                                                   8x + x^2 - 2x +4 = 20
combine like terms                      x^2 + 6x + 4 = 20
subtract 20 fm both sides            x^2 + 6x - 16 = 0
factor                                          (x + 8) (x - 2) = 0
set both factors to = 0            x + 8 = 0          x - 2 = 0
solve                                x = -8 and 2
put these amounts into the regular equation to get the value of y
leaving the correct answer as C.
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Ax +by=c solve for y
hichkok12 [17]

Answer:

y = c/b - (A x)/b

Step-by-step explanation:

Solve for y:

A x + b y = c

Hint: | Isolate terms with y to the left hand side.

Subtract A x from both sides:

b y = c - A x

Hint: | Solve for y.

Divide both sides by b:

Answer:  y = c/b - (A x)/b

6 0
3 years ago
4000 + 12 343 x 2 =(A)
Vikentia [17]

Answer:

12,686

Step-by-step explanation:

add both numbers up then multiply by 2

7 0
3 years ago
Help, please<br> Simplify. √27x^2y^2
skelet666 [1.2K]

Answer:

3✓3xy

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5 0
3 years ago
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What is .61 repeating as a fraction and how did you get the answer
vivado [14]
61/100, because if it is 0.(value) than it is value / 100 assuming value is 2 digits long. We cannot simplify it further because 61 is prime number.
7 0
3 years ago
2.5(12.75x + 24.50) = 188.75
mrs_skeptik [129]

Answer:

Step-by-step explanation:

First, in order to get rid of the parenthesis, you need to multiply 2.5 with whatever is in the parenthesis.

Multiply 2.5 on each side of the equation like this:

(12.75 x 2.5) (24.50 x 2.5) =188.75

Once you're finished, you should get 61.25 and 31.875x =188.75

Now in order to find 'x' you will need to subtract 61.25 to each side of the equation like this:

61.25 - 61.25 = 0

188.75 - 61.25 = 127.5

So now your equation should look like this:

31.875x = 127.5

You have to divide 31.875 by each side now.

Once you divide them, your final answer should be 4.

so x = 4.

I really hope this helps! ^^

5 0
3 years ago
Read 2 more answers
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