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lesya [120]
2 years ago
11

3

Mathematics
1 answer:
kaheart [24]2 years ago
6 0

Answer:

x = 12, y = 1

Step-by-step explanation:

y - x = -13

-4x + 3y = -51

Find y.

y = -13 + x

Plug y into 2nd equation

-4x + 3y = -51

-4x + 3(-13 + x) = -51

-4x + -39 + 3x = -51

-x = -12

x = 12

y = -13 + 12

y = -1

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Pls help me high paying reward.
Serggg [28]
-3 so top person is correct:)))))
5 0
2 years ago
What is 12.25 as a fraction
Finger [1]

Answer:

\large\boxed{12.25=\dfrac{49}{4}}

Step-by-step explanation:

12.\underbrace{25}_{2}=\dfrac{1225}{1\underbrace{00}_2}=\dfrac{1225:25}{100:25}=\dfrac{49}{4}\\\\12.25=12+0.25=12+\dfrac{25}{100}=12+\dfrac{25:25}{100:25}=12+\dfrac{1}{4}\\\\=\dfrac{12\cdot4}{4}+\dfrac{1}{4}=\dfrac{48+1}{4}=\dfrac{49}{4}

8 0
3 years ago
Solve this equation for x: 2x^2 + 12x - 7 = 0
zhannawk [14.2K]

Answer:

x=0.5355 or x=-6.5355

First step is to: Isolate the constant term by adding 7 to both sides

Step-by-step explanation:

We want to solve this equation: 2x^2 + 12x - 7 = 0

On observation, the trinomial is not factorizable so we use the Completing the square method.

Step 1: Isolate the constant term by adding 7 to both sides

2x^2 + 12x - 7+7 = 0+7\\2x^2 + 12x=7

Step 2: Divide the equation all through by the coefficient of x^2 which is 2.

x^2 + 6x=\frac{7}{2}

Step 3: Divide the coefficient of x by 2, square it and add it to both sides.

Coefficient of x=6

Divided by 2=3

Square of 3=3^2

Therefore, we have:

x^2 + 6x+3^2=\frac{7}{2}+3^2

Step 4: Write the Left Hand side in the form (x+k)^2

(x+3)^2=\frac{7}{2}+3^2\\(x+3)^2=12.5\\

Step 5: Take the square root of both sides and solve for x

x+3=\pm\sqrt{12.5}\\x=-3\pm \sqrt{12.5}\\x=-3+ \sqrt{12.5}, $ or $x= -3- \sqrt{12.5}\\$x=0.5355 or x=-6.5355

6 0
2 years ago
The ___ uses cash flows and the cost of raising capital as inputs to valuing a company's stock.
Vlad [161]
I think its camp. would be the answer
5 0
3 years ago
The tomato plants in Ms. Lang's
8_murik_8 [283]

Answer:

10 inches

Step-by-step explanation:

15 days/3 days =5

5 x 2 =10

6 0
1 year ago
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