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ANEK [815]
3 years ago
7

Answer the word problem for 10 points​

Mathematics
2 answers:
sasho [114]3 years ago
6 0

Answer:

Step-by-step explanation:21

Yakvenalex [24]3 years ago
5 0

Answer:

21

Step-by-step explanation:

105-45=105

105/5=21

so ya

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-2x+15y =-32<br>7x - 5y=17​
solmaris [256]
-2x+15Y=0
7x-5y=0

This is the answer I got it hope it helps
4 0
3 years ago
David owns a food truck that sells tacos and burritos. He sells each taco for $4.50 and each burrito for $7.75. Yesterday David
inna [77]
7.75+4.50
Then this equals 12.25 ; You gone want to divide this

519.25 \ 12.25 you get $42.38 or $42.39 if you round.

Or 4.50 x 60 is $270
7.75 x 30 is $232 which is closet to $519.25 which will give u $502.50
3 0
3 years ago
The Rocky Mountain district sales manager of Rath Publishing Inc., a college textbook publishing company, claims that the sales
mihalych1998 [28]

Answer:

We conclude that the mean number of calls per salesperson per week is more than 37.

Step-by-step explanation:

We are given that the Rocky Mountain district sales manager of Rath Publishing Inc., a college textbook publishing company, claims that the sales representatives make an average of 37 sales calls per week on professors.

To investigate, a random sample of 41 sales representatives reveals that the mean number of calls made last week was 40. The standard deviation of the sample is 5.6 calls.

<em><u>Let </u></em>\mu<em><u> = true mean number of calls per salesperson per week.</u></em>

SO, <u>Null Hypothesis</u>, H_0 : \mu \leq 37   {means that the mean number of calls per salesperson per week is less than or equal to 37}

<u>Alternate Hypothesis,</u> H_A : \mu > 37   {means that the mean number of calls per salesperson per week is more than 37}

The test statistics that will be used here is <u>One-sample t test statistics</u> as we don't know about the population standard deviation;

                        T.S.  = \frac{\bar X -\mu}{\frac{s}{\sqrt{n} } }  ~ t_n_-_1

where, \bar X = sample mean number of calls made last week = 40

             s = sample standard deviation = 5.6 calls

             n = sample of sale representatives = 41

So, <em><u>test statistics</u></em>  =   \frac{40-37}{\frac{5.6}{\sqrt{41} } }  ~ t_4_0

                               =  3.43

Hence, the value of test statistics is 3.43.

<em>Now at 0.025 significance level, the t table gives critical value of 2.021 at 40 degree of freedom for right-tailed test. Since our test statistics is more than the critical value of t as 3.43 > 2.021, so we have sufficient evidence to reject our null hypothesis as it will fall in the rejection region.</em>

Therefore, we conclude that the mean number of calls per salesperson per week is more than 37.

4 0
3 years ago
6 to the 2nd power ÷ 2 ( 3 ) + 4 =
Slav-nsk [51]
<span>Use the order of operation, PEMDAS.

6²÷2(3) +4

36/2(3)+4

=(18)(3)+4

=54+4

=58</span>
5 0
3 years ago
Which of the following shows 2 + (x + 3y) rewritten using the Associative Property of Addition?
Eduardwww [97]
The answer is B. (2 + x) + 3y.

The associative change happened when they just moved the parenthesis.

Hope this helps!
8 0
3 years ago
Read 2 more answers
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