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3 years ago

What is the solution to the equation 5 over 8 (4x-16) =20? A) 4 B) 12 C) 25 D) 75

Mathematics

2 answers:

pickupchik [31]3 years ago

7 0

Answer:

work is pictured and shown

Juliette [100K]3 years ago

7 0

Answer:

Step-by-step explanation:

5/8 (4x-16) 20(cross multiply )
160 5 (4x-16)
160 20x-80 (collect like terms )
160➕80 20x
240 20x (divide both sides by 20)
240/20 20x/20
12 x

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2 years ago

Find the value of g(x)=2-x^2 and f(x)=2x-1 . f(-4)

Ivenika [448]

Answer:

f(-4) = -9

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6 0

2 years ago

Read 2 more answers

Solve x^2+11X<-8 Urgent please help!!!!!

Tamiku [17]

Add 121/4 to each side:
x²+11x+121/4 < 121/4-8
x²+11x+121/4 < 89/4
(x+11/2)² < √89/2 ⇒ -√89/2 < x+11/2 < √89/2
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8 0

2 years ago

Select the two values of x that are roots of this equation.

makkiz [27]

Answer:

$\implies x = (-2) \qquad or\qquad x = \dfrac{-3}{2}$

Step-by-step explanation:

Given :-

A quadratic equation is given to us.
The equation is 2x² + 7x +6=0

And we need to find out the roots of the given equation. We can use the middle term splitting method to find out the roots as ,

Given equation :-

$\implies 2x^2 + 7x +6=0$

Step 1: Find out the factors of 12 :-

We will choose the two factors such that their sum equals to the coefficient of x i.e. 7 .The factors are , 1×12 , 2×6 , 3×4 .

And 3 + 4 = 7. So we will break the middle term into 3x and 4x .

Step 2 : Breaking the middle term :-

$\implies 2x^2 + 3x+4x +6=0$

Step 3: Take out common from terms :-

$\implies x(2x + 3) +2(2x +3)=0$

$\implies ( x +2)(2x+3)=0$

Step 4 : Equate them with 0 :-

$\implies x = (-2) \qquad or\qquad x = \dfrac{-3}{2}$

Hence the correct options are C and D .

5 0

2 years ago