1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
maksim [4K]
2 years ago
9

In order to solve for the variable in the equation 2 (x + 3) + 5 x = 3 (2 x minus 1), Jaleesa begins by applying the distributiv

e property, then combines like terms. Which equation is the result of these steps?
7 x + 6 = 6 x minus 3
2 x + 6 + 5 x = 6 x minus 3
2 x + 3 + 5 x = 6 x minus 1
7 x + 3 = 6 x minus 1
Mathematics
1 answer:
LekaFEV [45]2 years ago
4 0

Answer:

7x + 6 = 6x - 3

Step-by-step explanation:

2(x+3) + 5x = 3(2x-1)

Distribute

2x + 6 + 5x = 6x - 3

Combine like terms

7x + 6 = 6x - 3

hope this helps

You might be interested in
After establishing x how would I find DKH
Nookie1986 [14]
The sum of the 2 angles will add up to 180°
8 0
3 years ago
Lets compare 5/6 and 7/9 also with same denominator
zysi [14]
The common denominator would be 18. So, 5/6 becomes 15/18 and 7/9 becomes 14/18
6 0
3 years ago
Read 2 more answers
PLEASE HELP!!!
storchak [24]
1. 7.00
2. A. <span>Sarah is paying the smaller price of $1.25 per cupcake. 

</span>
6 0
3 years ago
The amount people pay for cable service varies quite a bit but the mean monthly fee is $142 and the standard deviation is $29. t
zhuklara [117]

Answer:

a) By the Central Limit Theorem, the mean is $142 and the standard deviation is $0.7488.

b) By the Central Limit Theorem, approximately normal.

c) 0.0901 = 9.01% probability that the average cable service paid by the sample of cable service customers will exceed $143

Step-by-step explanation:

To solve this question, we need to understand the normal probability distribution and the central limit theorem.

Normal probability distribution

When the distribution is normal, we use the z-score formula.

In a set with mean \mu and standard deviation \sigma, the zscore of a measure X is given by:

Z = \frac{X - \mu}{\sigma}

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

Central Limit Theorem

The Central Limit Theorem estabilishes that, for a normally distributed random variable X, with mean \mu and standard deviation \sigma, the sampling distribution of the sample means with size n can be approximated to a normal distribution with mean \mu and standard deviation s = \frac{\sigma}{\sqrt{n}}.

For a skewed variable, the Central Limit Theorem can also be applied, as long as n is at least 30.

The mean monthly fee is $142 and the standard deviation is $29.

This means that \mu = 142, \sigma = 29

Part a: what are the mean an standard deviation of the sample distribution of x hat show your work and justify your reasoning.

Sample of 1500(larger than 30).

By the Central Limit Theorem

The mean is $142

The standard deviation is s = \frac{29}{\sqrt{1500}} = 0.7488

Part b: what is the shape of the sampling distribution of x hat justify your answer.

By the Central Limit Theorem, approximately normal.

Part C: what is the probability that the average cable service paid by the sample of cable service customers will exceed $143?

This is 1 subtracted by the pvalue of Z when X = 143. So

Z = \frac{X - \mu}{\sigma}

By the Central Limit Theorem

Z = \frac{X - \mu}{s}

Z = \frac{143 - 142}{0.7488}

Z = 1.34

Z = 1.34 has a pvalue of 0.9099

1 - 0.9099 = 0.0901

0.0901 = 9.01% probability that the average cable service paid by the sample of cable service customers will exceed $143

4 0
3 years ago
Hope watches a movie Friday night that was two and one-half hours long. On Saturday, she watched a documentary half as long as F
Zolol [24]

Answer:

1 hour and 15 minutes thats how long the documentary was

5 0
3 years ago
Read 2 more answers
Other questions:
  • -1/5c+2+c=1/5(10c-20)
    8·1 answer
  • A random sample of n measurements was selected from a population with unknown mean μ and known standard deviation σ. Calculate a
    9·2 answers
  • What is the solution to 3/4 a &gt; -16 Hellp Plz
    9·2 answers
  • A convertible is traveling at 45 miles per hour, and its wheels have a diameter of 48 inches. How many complete revolutions do t
    12·1 answer
  • All computers are on sale for 10% off the original price.If x is the original price of the computer,then the function that repre
    5·1 answer
  • 6378 scientific notation
    10·1 answer
  • Need help fast i'll give the brainiest to who ever is right! tell me where to but the dots
    6·1 answer
  • I need answers right now
    12·1 answer
  • Solve for t.
    6·1 answer
  • What is the value of the expression 8/15 divided by (-0.35)
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!