3 years ago

What are the solutions of the quadratic equation 4x2 - 8x – 12 = 0?

Mathematics

1 answer:

Juliette [100K]3 years ago

5 0

Answer:

see bottom

Step-by-step explanation:

divide through by 4

x2 - 2x - 3 = 0

x2 - 3x + x - 3 = 0

(x2 - 3x) + (x - 3) = 0

x(x - 3) + 1(x - 3) = 0

(x + 1) (x - 3) = 0

x + 1 = 0 and x - 3 = 0

x = -1 and x = 3

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-377 = x - 1,000 i dont under stand it

Naddika [18.5K]

Answer:

$\boxed {x = 623}$

Step-by-step explanation:

Solve for the value of $x$ :

$-377 = x - 1,000$

-Switch sides:

$-377 = x - 1,000$

$x - 1,000 = -377$

-Add $1,000$ on both sides:

$x - 1,000 + 1,000 = -377 + 1,000$

$\boxed {x = 623}$

Therefore, the value of $x$ is $623$ .

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3 years ago

2. Solve: 33 + 2(5+8)-(6-2)

mars1129 [50]

Answer:

Step-by-step explanation:

Add the numbers 5 + 8 and you get 13. Multiply 13 x 2 which is 26. Add 33 + 26 and you get 59. Then, subtract it by 4 and you get 55.

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3 years ago

Jesse says that the expressions 762x + 9) and 14x + 9 are equivalent

Schach [20]

Answer:

Jesse is an idiot

Step-by-step explanation:

762x does not equal 14x

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1 year ago

Help pls!!! <br> If a1 = 6 and an<br> 2an-1 then find the value of a4.

Alenkinab [10]

24? I am not entirely sure but I think a4=24

Reason: if a1 equals 6 then I would like to think you would multiply 6 by 4 to get the value of a4 (I haven’t done this type of math in a while)

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2 years ago

Write The Number 12.1 As A Fraction Is simplest Form

musickatia [10]

$12.1=12+0.1=12+\dfrac{1}{10}=\boxed{12\frac{1}{10}}$

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3 years ago