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GaryK [48]
2 years ago
13

Adelle solved the equation 4x/7 -6= -20 as shown. Fill in the correct justification for each step. [ Look at the picture. Please

only answer if you know the answer to my question. No Plagiarism. Will Mark Brainliest​

Mathematics
1 answer:
grigory [225]2 years ago
7 0

Answer:

2)add both sides by 6

3) multiply both sides by 7

4)divide both sides by 4

Step-by-step explanation:

You might be interested in
What percentage of babies born in the United States are classified as having a low birthweight (<2500g)? explain how you got
lawyer [7]

Answer:

2.28% of babies born in the United States having a low birth weight.

Step-by-step explanation:

<u>The complete question is</u>: In the United States, birth weights of newborn babies are approximately normally distributed with a mean of μ = 3,500 g and a standard deviation of σ = 500 g. What percent of babies born in the United States are classified as having a low birth weight (< 2,500 g)? Explain how you got your answer.

We are given that in the United States, birth weights of newborn babies are approximately normally distributed with a mean of μ = 3,500 g and a standard deviation of σ = 500 g.

Let X = <u><em>birth weights of newborn babies</em></u>

The z-score probability distribution for the normal distribution is given by;

                          Z  =  \frac{X-\mu}{\sigma}  ~ N(0,1)

where, \mu = population mean = 3,500 g

            \sigma = standard deviation = 500 g

So, X ~ N(\mu=3500, \sigma^{2} = 500)

Now, the percent of babies born in the United States having a low birth weight is given by = P(X < 2500 mg)

         

   P(X < 2500 mg) = P( \frac{X-\mu}{\sigma} < \frac{2500-3500}{500} ) = P(Z < -2) = 1 - P(Z \leq 2)

                                                                 = 1 - 0.97725 = 0.02275 or 2.28%

The above probability is calculated by looking at the value of x = 2 in the z table which has an area of 0.97725.

4 0
3 years ago
What are the answers I need help ?
olchik [2.2K]

Answer:

I can't see -_-

Step-by-step explanation:

I can't -_-

7 0
3 years ago
Simplify the expression.<br><br><br> 5(2) + 2(4 + 3)<br><br> 21<br> 24<br> 84<br> 140
Leona [35]

Answer:

24

Step-by-step explanation:

5(2) + 2(4 + 3)

5 x 2 + 2 x 7

10 + 14 = 24

Here you go! :D

7 0
2 years ago
Read 2 more answers
What is 5 + 5 + 5 + 5 equals 550 ​
lora16 [44]

5 + 5 + 5 + 5 equals 550 ​lgjf8654

5 0
3 years ago
Read 2 more answers
Need help right now<br> Not really but please
Dafna1 [17]

Mean is when you take all the numbers and add them together and divide by the amount of numbers there

Example: Find the mean of :3,4,6,7

So you a 3+4+6+7=20 divide that by 4(because there you added 4 numbers) and that equals 5

6 0
3 years ago
Read 2 more answers
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