2 years ago

What is the solution set of the equation 6x^2 - 18x - 18 =6?

Mathematics

1 answer:

dybincka [34]2 years ago

3 0

Answer:

The solution set is {4, -1}

Step-by-step explanation:

6x²- 18x -18 = 6

6x²- 18x -18 - 6 = 0

6x²- 18x -24 = 0

6(x² - 3x - 4) = 0

6(x - 4)(x + 1) = 0

6 = 0 not true

x - 4 = 0 ; x + 1 = 0

x = 4 x = - 1

The solution set is {4, -1}

You might be interested in

Find the x in each triangle<br>HELP NOW!!!! PLSSS

Ilia_Sergeevich [38]

Answer:

8 CM

Step-by-step explanation:

(Hypotenuse)²=(Base)²+(Height)²

10²=X+6².

100=X+36

100-36=X ( by transposition method )

√64=X

8=X

6 0

2 years ago

Allie charges $12.49 for each delivered meal. If a 7 percent sales tax is applied, what is the total cost of the meal?

ohaa [14]

The multiplier for a 7% increase is 1.07.
Time the price by the multiplier:

12.49 x 1.07 = $13.36

8 0

2 years ago

With a tailwind , a helicopter flies 300 miles in 1.5 hours. when the helicopter flies back against the same wind the trip takes

Firlakuza [10]

Answer:

i think its 150

3 0

2 years ago

If f(x)=3x^(2)+1 and G(x)=2x-3 what would f(f(x))

Ostrovityanka [42]

Answer:

f(f(x)) = 27 $x^{4}$ + 18x² + 4

Step-by-step explanation:

To find f(f(x)) substitute x = f(x) into f(x) , that is

f(3x² + 1)

= 3(3x² + 1)² + 1 ← expand parenthesis using FOIL

= 3(9 $x^{4}$ + 6x² + 1) + 1 ← distribute parenthesis by 3

= 27 $x^{4}$ + 18x² + 3 + 1 ← collect like terms

= 27 $x^{4}$ + 18x² + 4

6 0

1 year ago

Read 2 more answers

There are 120 chairs and 30 tables in a banquet hall.<br> What is the unit rate of chairs to tables?

sasho [114]

See attachment for math work and answer.

6 0

2 years ago

Read 2 more answers