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I am Lyosha [343]
3 years ago
10

Red ink pens are sold at $1.50 each black ink pens are sold at $30 which color is the cheaper buy?

Mathematics
1 answer:
Lena [83]3 years ago
7 0

Answer:

Red Ink pens.

Step-by-step explanation:

Red ink pens are sold at $1.50 while Black ink pens are sold at $30. One black ink pens cost more than one red ink pen by $28.50.

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A carton can hold 1,000 unit cubes that measure 1 inch by inch.describe the dimensions of the carton using unit cubes
Romashka-Z-Leto [24]
You've told us the volume of the carton. 
That doesn't tell us the dimensions.

If the unit cubes have to exactly fit the dimensions,
then all we know is that the dimensions are integers,
and their product is 1,000.

The carton could be

1 by 1 by 1,000
1 by 2 by 500
1 by 4 by 250
1 by 5 by 200
1 by 8 by 125
1 by 10 by 100
1 by 20 by 50
1 by 25 by 40

2 by 2 by 250
2 by 5 by 100
2 by 10 by 50
.
.
and several other possible sets.
6 0
3 years ago
A 90% confidence interval for the mean height of students
Westkost [7]

Answer:

ME= \frac{69.397-60.128}{2}= 4.6345 \approx 4.635

And the best answer on this case would be:

b) m = 4.635

Step-by-step explanation:

Let X the random variable of interest and we know that the confidence interval for the population mean \mu is given by this formula:

\bar X \pm t_{\alpha/2} \frac{s}{\sqrt{n}}

The confidence level on this case is 0.9 and the significance \alpha=1-0.9=0.1

The confidence interval calculated on this case is 60.128 \leq \mu \leq 69.397

The margin of error for this confidence interval is given by:

ME =t_{\alpha/2} \frac{s}{\sqrt{n}}

Since the confidence interval is symmetrical we can estimate the margin of error with the following formula:

ME = \frac{Upper -Lower}{2}

Where Upper and Lower represent the bounds for the confidence interval calculated and replacing we got:

ME= \frac{69.397-60.128}{2}= 4.6345 \approx 4.635

And the best answer on this case would be:

b) m = 4.635

4 0
3 years ago
Find the volume of the solid below.
9966 [12]

Answer:

3000 cm^3.

Step-by-step explanation:

If the top number is 15 it's

15 * 20 * 10

=  3000 cm^3.

7 0
3 years ago
Read 2 more answers
Ben rolls two number cubes. What is the probability that the sum of the numbers he rolls is less than 6
kotegsom [21]
The numbered cubes might be referring the dice. We know that there are 36 ways of dice will occur.
Take the unique list of the following pair for which the sum is less than 6, and these are
(1,1) (1,2) (1,3) (1,4) (2,1) (2,2) (2,3) (3,1) (3,2) (4,1)
Therefore there are 10 possible ways we could get.
In probability, it is a ratio of the successful outcomes over the total number of possible outcomes.
P = 10/36 = 5/18
8 0
3 years ago
Chipper ran 1 mile in 8 minutes. How long would it take him to run 5 miles?
balandron [24]

Answer:

40 minutes

Step-by-step explanation:

Given 1 mile = 8 minutes

5 miles = (5 × 8) minutes

5 miles = 40 minutes

It would take 40 minutes to run 5 miles

7 0
3 years ago
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