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aksik [14]
3 years ago
5

I need help with this 8(y+4)=7y+38

Mathematics
1 answer:
STatiana [176]3 years ago
3 0
Distribute.

8(y+4)

8y+32= 7y+38

Subtract 32.

8y= 7y+6

Subtract 7y from both sides.

1y= 6

Divide 1 into both sides.

y=6

I hope this helped!
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I need help writing an equation for this question. i would be very grateful for help. And if you do help thank you very much.
Neko [114]
2525 + 33x If I helped please leave a 5 star review and hit the thanks button.
8 0
3 years ago
Which of the following statements about the percentiles for the standard normal distribution are correct? A. The 90th percentile
shutvik [7]

Answer:

Correct option: (C) The 75th percentile is approximately 0.67

Step-by-step explanation:

The <em>p</em>th percentile is a data value such that at least <em>p</em>% of the data set is less than or equal to this data value and at least (100 - <em>p</em>)% of the data set are more than or equal to this data value.

If <em>x</em> is the <em>p</em>th percentile of a data set then,

P (X < x) = p/100

If X\sim N(\mu, \sigma^{2}) then  Z=\frac{X-\mu}{\sigma}, is a standard normal variate with mean, E (Z) = 0 and Var (Z) = 1. That is, Z \sim N (0, 1).

  • The 90th percentile of a standard normal distribution is:

        P (Z < z) = 0.90, then <em>z</em> = 1.28

  • The 10th percentile of a standard normal distribution is:

        P (Z < z) = 0.10, then <em>z</em> = -1.28

  • The 75th percentile of a standard normal distribution is:

        P (Z < z) = 0.75, then <em>z</em> = 0.67

  • The 15th percentile of a standard normal distribution is:

        P (Z < z) = 0.15, then <em>z</em> = -1.04

Thus, the correct statement is (C).

7 0
3 years ago
How do I solve this?
andriy [413]
4x10=40x16=640 8x10=80x16=1280 Step by step explanation:
7 0
2 years ago
Solve 3(x + 6) + 8(x – 3) = 27. Show each step of your work.
musickatia [10]
Distribute. 

3(x+6)

3x+18

8(x-3)

8x-24

3x+18+8x-24

Combine like terms. 

11x-6= 27

Add 6 to the other side. 

11x= 33

Divide both sides by 11. 

x=3

I hope this helps!
<em>~cupcake</em>
5 0
3 years ago
Read 2 more answers
Is -46.2 a irrational number
Archy [21]

Answer:

No

Step-by-step explanation:

irrational numbers have nonrepeating and non terminating decimals

This decimal stops at one digit so this is a rational number

3 0
2 years ago
Read 2 more answers
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