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4 years ago

Will someone please walk me through this problem

Mathematics

2 answers:

Romashka [77]4 years ago

7 0

First multiply both sides by 3
(x + 4)
-------- * 3 = 2 * 3
3

simplify
x + 4 = 6

now subtract 4 to both sides
x + 4 - 4 = 6 - 4
simplify
x = 2

Brilliant_brown [7]4 years ago

6 0

It x= 2 ! so B is the correct option .
as

x+4=6
X=2

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PLEASE HELP?

Leto [7]

The answer is A

Step-by-step explanation:

The sample space is EVERY possible outcome

4 0

4 years ago

Is 18-3(2p+4) -3p equivalent to 3(2-3p)

Murljashka [212]

Answer:

<u>Yes they are equivalent.</u>

Step-by-step explanation:

Use PEMDAS: Parenthesis, Exponents, Multiplication, Division, Addition, Subtraction

Distribute or multiply -3 with 2p and 4 to get -6p and -12.

You will then have 18-6p-12-3p, simplify to get 6-9p

For the second equation multiply 3 with 2 and -3p, you will then get 6-9p as well.

They are equal, hope the helps ;)

4 0

3 years ago

Voltage sags and swells. Refer to the Electrical Engineering (Vol. 95, 2013) study of transformer voltage sags and swells, Exerc

Artist 52 [7]

Answer:

a. z-score for the number of sags for this transformer is ≈ 1.57 . The number of sags found in this transformer is within the highest 6% of the number of sags found in the transformers.

b. z-score for the number of swells for this transformer is ≈ -3.36. The number of swells found in the transformer is extremely low and within the lowest 1%

Step-by-step explanation:

z score of sags and swells of a randomly selected transformer can be calculated using the equation

z= $\frac{X-M}{s}$ where

X is the number of sags/swells found

M is the mean number of sags/swells

s is the standard deviation

z-score for the number of sags for this transformer is:

z= $\frac{400-353}{30}$ ≈ 1.57

the number of sags found in the transformer is within the highest 6% of the number of sags found in the transformers.

z-score for the number of swells for this transformer is:

z= $\frac{100-184}{25}$ ≈ -3.36

the number of swells found in the transformer is extremely low and within the lowest 1%

5 0

3 years ago

Simplify and show your steps: 4(3x + 2) -2

Stells [14]

4*3x=12x
4*2=8
12x+8-2=12x+6
Answer is 12x+6

5 0

3 years ago

Read 2 more answers

You roll a 6 sided die 2 times what is the probability of rolling a 6 and then rolling a number greater than 2

jek_recluse [69]

Answer:

1/9 probability of rolling a 6 and then a number greater than 2

Step-by-step explanation:

1. Rolling a six on the first go is 1/6 chance

2. Rolling a number greater than 2, for example 4, is also 1/6 chance

3. So we know that at first, there is a 1/6 chance of rolling a 6, now when the die is rolled again, there needs to be a 3, 4, 5 or 6, each of these has a 1/6 chance again

4. So the chance of rolling a 6 and then a 3 is solved by finding the chance of rolling 6, then multiplying that by the chance of rolling a 3 afterwards

5. We get an equation of 1/6 x 1/6 which = 1/36

6. We apply this to the rest of the possible combinations, 6 and then 4 which is 1/36, 6 and then 5 etc.

7. Once we find all possible combinations, we add them up, this means that 6 then 3 = 1/36, 6 then 4 = 1/36, 6 then 5 = 1/36 and 6 then 6 = 1/36 is added so we get 1/36 + 1/36 + 1/36 + 1/36 = 4/36

8. We simplify this to get 1/9

7 0

3 years ago