All categories

2 years ago

When ringing up a customer, a cashier needs 6 seconds to process payment as well as 1

Mathematics

2 answers:

Elena-2011 [213]2 years ago

7 0

Answer:

Step-by-step explanation:

to process payment = 6 sec

each item = 1 sec

total = 20 sec

From this information, we can formulate an equation where x = number of items being purchased.

$6+1(x) = 20$

$x=20-6\\x=14$

Ivan2 years ago

4 0

Answer:

14 items

Step-by-step explanation:

20 seconds minus the six it takes to process purchase is 14 and if i takes 1 second to scan each item 14 times 1 is 14

You might be interested in

H(x) = -x - 1, find h(-2)

eduard

Answer:

I think the answer is 1

Step-by-step explanation:

-(-2)-1

6 0

2 years ago

∠C

earnstyle [38]

I’m asking the same question please help us!!! Thank you

5 0

2 years ago

Read 2 more answers

Which of the following tables shows the correct steps to transform x^2+8x+15=0 into the form of (x-p)^2=q (p and q are integers)

Montano1993 [528]

<span>The best and most correct answer among the choices provided by the question is the third choice:
table 3:
step 1.x^2+8x+15+1=0+1
step 2.x^2+8x+16=1
<span>step 3.(x+4)^2=1</span>

I hope my answer has come to your help. God bless and have a nice day ahead!</span>

8 0

3 years ago

Read 2 more answers

Can somebody help me with this?????

sergejj [24]

D. You multiply all measurements together. The thickness has nothing to do with how much air will be inside. (: hope this helped ya :)

7 0

2 years ago

Read 2 more answers

A college admissions officer takes a simple random sample of 90 entering freshman and computes their mean mathematics sat score

Natalija [7]

Answer:

460 is part of the confidence interval, which means that we cannot say that there is significant evidence that the mean mathematics SAT score for entering freshmen class is greater than 460

Step-by-step explanation:

We have that to find our $\alpha$ level, that is the subtraction of 1 by the confidence interval divided by 2. So:

$\alpha = \frac{1 - 0.99}{2} = 0.005$

Now, we have to find z in the Z-table as such z has a p-value of $1 - \alpha$ .

That is z with a pvalue of $1 - 0.005 = 0.995$ , so Z = 2.575.

Now, find the margin of error M as such

$M = z\frac{\sigma}{\sqrt{n}}$

In which $\sigma$ is the standard deviation of the population and n is the size of the sample.

$M = 2.575\frac{101}{\sqrt{90}} = 27.4$

The lower end of the interval is the sample mean subtracted by M. So it is 436 - 27.4 = 408.6.

The upper end of the interval is the sample mean added to M. So it is 436 + 27.4 = 463.4.

460 is part of the confidence interval, which means that we cannot say that there is significant evidence that the mean mathematics SAT score for entering freshmen class is greater than 460

6 0

2 years ago