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umka21 [38]
3 years ago
13

Why do i have to learn the quadratic equation?

Mathematics
1 answer:
marysya [2.9K]3 years ago
5 0
<h2><u>↑I DON'T KNOW↓</u></h2>
  1. <em>IDK</em>
  2. <em>IDK</em>
  3. <em>IDK</em>
  4. <em>IDK</em>
  5. <em>IDK</em>
  6. <em>IDK</em>
  7. <em>IDK</em>
  8. <em>IDK</em>
  9. <em>IDK</em>
  10. <em>IDK</em>
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blondinia [14]
It equals 8.4 

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3 years ago
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(2 X + 5) and (4 X - 3)​
zepelin [54]

Answer: 8x+2

explanation:

i just solved it

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it costs $61 to produce 3 calculators, $165 to produce 7 calculators, and $385 to produce 12, how much for 6 calculators
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2 years ago
X:y=5:3 and x+y=56 work ouy the value of x and y​
emmainna [20.7K]

Answer:

x=35, y=21

Step-by-step explanation:

A way to rewrite the first equation is  \frac{x}{y} =\frac{5}{3}

after cross-multiplying, we get 3x=5y.

If we solve for one variable, we can substitute it into the other equation.

Let's solve for x.

3x=5y

x=(5/3)y

Now, we can substitute x=(5/3)y in the equation x+y=56.

(5/3)y+y=56

(8/3)y=56

y=21

Going back to x+y=56, we can now plug back in y, knowing that it is 21.

x+21=56

x=35.

8 0
2 years ago
3) What is the measurement of each side if the perimeter is 78?<br> (3x - 4) cm<br> (2x + 3) cm
Goshia [24]
There are 4 sides so add 4 sides
3x-4+3x-4+2x+3+2x+3=78

Combine like terms
10x-2=78

Add 2 to each side of the equation
10x=80

Divide by 10
X=8

Enter x into equation
3(8)-4=20
2(8)+3=19

Multiply by 2
20 x 2= 40
19 x 2 = 38
40 +38 =78

Side 1- 20
Side 2- 19
Side 3- 20
Side 4- 19
3 0
3 years ago
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