All categories

3 years ago

2 ( 4x - 3 ) - 8 = 4 + 2x Giving me a headache

Mathematics

2 answers:

Advocard [28]3 years ago

4 0

1 Expand.

8x-6-8=4+2x8x−6−8=4+2x

2 Simplify 8x-6-88x−6−8 to 8x-148x−14.

8x-14=4+2x8x−14=4+2x

3 Add 1414 to both sides.

8x=4+2x+148x=4+2x+14

4 Simplify 4+2x+144+2x+14 to 2x+182x+18.

8x=2x+188x=2x+18

5 Subtract 2x2x from both sides.

8x-2x=188x−2x=18

6 Simplify 8x-2x8x−2x to 6x6x.

6x=186x=18

7 Divide both sides by 66.

x=\frac{18}{6}x=

8 Simplify \frac{18}{6}

to 33.

x=3x=3

Done Hope this helps let me know if u have any questions thank you

Karo-lina-s [1.5K]3 years ago

3 0

Answer:

Step-by-step explanation:

1 Expand.

8x-6-8=4+2x8x−6−8=4+2x

2 Simplify 8x-6-88x−6−8 to 8x-148x−14.

8x-14=4+2x8x−14=4+2x

3 Add 1414 to both sides.

8x=4+2x+148x=4+2x+14

4 Simplify 4+2x+144+2x+14 to 2x+182x+18.

8x=2x+188x=2x+18

5 Subtract 2x2x from both sides.

8x-2x=188x−2x=18

6 Simplify 8x-2x8x−2x to 6x6x.

6x=186x=18

7 Divide both sides by 6.

x= 18/6

8 Simplify 18/6 to 3

x=3

You might be interested in

What is the volume of this figure? <br> Plz answer soon! <br> (iready)

Lena [83]

Answer:

Volume = 1730 in^2

Step-by-step explanation:

18 - 5 = 13

6 + 5 = 11

10 x 13 x 11 = 1430

10 x 5 x 6 = 300

1430 + 300 = 1730

8 0

2 years ago

A stain glass window is shaped like a semicircle. The bottom edge of the window is 36 inches long. What is the area of the stain

Lubov Fominskaja [6]

I don't really have a calculator on me. But I'll tell you how to go through it.
So the formula for the area of a circle is Pi x radius^2.
So since the diameter is 36, divide that by 2 to get the radius, and you're left with 18. Now do 18 squared and then times that by Pi. Now you've got the area of the whole circle, but since we only have a semicircle, you need to divide your answer by two to get the area of the semi circle

8 0

3 years ago

Eli has 7 games on his phone. His sister has 6 more than him. Which ratio compares the number of games on Eli’s phone to the num

Schach [20]

13 : 7
(as eli has seven
and his dister has 6 more therefore 6+7 =13)

so this must be the correct answer

hope it will help you

7 0

3 years ago

Suppose you open a new game at the county fair. When patrons win, you pay them $3.00; when patrons lose, they pay you $1.00. If

tatyana61 [14]

Answer:

$E(X) = 1 *0.8 - 3*0.2 = 0.2$

so at the long run we can conclude that the best option is :

A) win 0.20 cents per play

Step-by-step explanation:

Previous concepts

The expected value of a random variable X is the n-th moment about zero of a probability density function f(x) if X is continuous, or the weighted average for a discrete probability distribution, if X is discrete.

The variance of a random variable X represent the spread of the possible values of the variable. The variance of X is written as Var(X).

Solution to the problem

Let X the random variable who represent the ampunt of money win/loss at the game defined.

The probability of loss $3.00 for this game is 0.2 and the probability of win is 1-0.2=0.8 and you will recieve $1.00 if you win. The expected value is given by:

$E(X) = \sum_{i=1}^n X_i P(X_i)$