3 years ago

PLEASE HELP!!! simplify 3(x-5) + 4x

Mathematics

1 answer:

Lerok [7]3 years ago

5 0

3(x-5) + 4x
3x - 15 + 4x
7x - 15

You might be interested in

Bernice is filing her federal tax return with 1040ez form using the single filing status, and nobody can claim her as a dependen

Maru [420]

Answer:

The answer is D. 38360

Step-by-step explanation:

5 0

3 years ago

15. Fatima bought a video game that has a

OleMash [197]

Answer:

Step-by-step explanation:

Discount = 15% of 45

$=\frac{15}{100}*45\\\\=\frac{675}{100}=6.75$

= $6.75

Price of the video game = 45 - 6.75 = $38.25

Tax = 7%of 38.25

$=\frac{7}{100}*38.25\\\\=\frac{267.75}{100}=2.6775$

Price paid by Fatima for the video game = 38.25 + 2.68 = $ 40.93

6 0

3 years ago

A candy store sells varieties of candy. Out of these 20 varieties,12 varieties contain chocolate. What precent of the total numb

vazorg [7]

12/20=.6

Thus, move the decimal point two places to the right, and the answer is 60%

5 0

3 years ago

The director of the library calculates that 29% of the library's collection is checked out. If the director is right, what is th

marusya05 [52]

Answer:

The probability that the proportion of books checked out in a sample of 412 books would differ from the population proportion by less than 4% is P=0.9255.

Step-by-step explanation:

The population's proportion is $\pi=0.29$

If we take a sample of 412 books (n=412), we have a standard deviation of the sampling distribution of:

$\sigma_M=\sqrt{\frac{\pi(1-\pi)}{n}}=\sqrt{\frac{0.29*0.71}{412}}=\sqrt{0.0005} =0.0224$

We have to calculate the probabilty that the sample proportion will be between 0.25 and 0.33.

$z_1=(0.25-0.29)/0.0224=-0.04/0.0224=-1.7857\\\\z_2=1.7857\\\\\\P(0.25$

8 0

4 years ago

6. A foresting service conducted a survey to see if tree farms that planted hardwood trees were more profitable over a 30-year p

stira [4]

No, because there is not enough information given to make a conclusion. Providing a percentage of 46% higher profit per acre doesn't mean statistical significance as it could be data-based only. There should be a given p value to make a conclusion about statistical significance.

3 0

3 years ago

Read 2 more answers