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Mariana [72]
2 years ago
11

What if it’s not correct or not ?

Mathematics
1 answer:
qwelly [4]2 years ago
8 0

Answer:

what is correct or not

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Solve the following system by substitution.<br> 6x + 7y= 20<br> y = 2x
sweet [91]

Answer:

Hope this helps!

Step-by-step explanation:

Point Form:

(1,2)

Equation Form:

x = 1 , y = 2

4 0
3 years ago
F(x) = x^2 + 4x + 20 find the real roots. take your time if you want :)
s344n2d4d5 [400]

Answer:

No real roots

x = -2 + 4i, x = -2 - 4i

Step-by-step explanation:

Hello!

We can solve the quadratic by using the Quadratic Formula.

Standard form of a Quadratic: ax^2 + bx + c = 0

Quadratic Equation: x = \frac{-b\pm\sqrt{b^2 - 4ac}}{2a}

Given our Equation: f(x) = x^2 + 4x + 20

  • a = 1
  • b = 4
  • c = 20

Set the equation to 0 and solve using the formula.

<h3>Solve</h3>
  • x = \frac{-b\pm\sqrt{b^2 - 4ac}}{2a}
  • x = \frac{-4\pm\sqrt{4^2 - 4(1)(20)}}{2(1)}
  • x = \frac{-4\pm\sqrt{16 - 80}}{2}
  • x = \frac{-4\pm\sqrt{-64}}{2}
  • x = \frac{-4\pm8i}{2}
  • x = -2 + 4i, x = -2 - 4i

There are no real roots to the quadratic.

8 0
2 years ago
4. A realtor makes 5% off of any house she sells. If she sells a house for
DiKsa [7]

Answer:

37,500

Step-by-step explanation:

5% is just .05 in decimal form, so it's easy to just multiply the decimal by your total, 750,00 in this case, and get the amount of money she is able to earn from selling the house.

5% of 750,00 = .05(750,000) = 37,500.

7 0
3 years ago
A number between 67 and 113 that is a multiple of 4,6,and 8
Varvara68 [4.7K]
Well to solve this problem first you need to know the multiples of 4,6, and 8. Can you list them for me?

Then you find a number that is a multiple of all the numbers 4,6, and 8 that is in between 67 and 113.
3 0
3 years ago
Suppose that an open box is to be made from a square sheet of cardboard by cutting
Stells [14]

Answer:

L = 18 inches

Step-by-step explanation:

if s is side length

400 = s•s•4

s² = 100

s = 10

so the original flat cardboard square has sides of

L =  10 + 4 + 4

L = 18 inches

7 0
3 years ago
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