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Contact [7]
3 years ago
7

If 30 pens cost $4.20, what will 1 pen cost?

Mathematics
2 answers:
natulia [17]3 years ago
7 0
Divide 4.2 by 30 and you get $0.14 per pen 
Olin [163]3 years ago
3 0

Hi there! :) The answer to your question is $0.14. I got that answer because I divided $4.20/30( $4.20 divided by 30) which is 0.14.


Hope I helped! :D

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A piece of electronic equipment is built with 3 cooling fans. The equipment will function only if at least 2 of the 3 fans are w
PolarNik [594]

Answer:

0.66608

Step-by-step explanation:

Equipment = 3 fans

Mortality = 0.098

We are required to find probability that equipment gets to work for 5years

The question says forces of mortality is constant and also equal to 0.098

To calculate p(x>5)

We will do this by calculating exponentially

e^-0.098x5

= 0.612626394

Probability that at least 2 fans out of 3 are working

3(0.612626394)²+(1-0.612626394)+(0.612626394)³

= 1.1259333x0.3873736+0.2299255

= 0.6660823470

This is approximately

<u>0.6608</u>

this is the probability that the equipment will work for at least 5years

8 0
3 years ago
Explain how you can use division to simplify a complex fraction.
PolarNik [594]
Reduce the final answer if needed (or reduce when you multiply).  A mixed number should be converted to an improper fraction (heavier on top) before simplifying. Change the numerator and denominator to single fractions<span> by creating a common denominator</span>
3 0
3 years ago
Lena paid $18.96 for 3pounds of coffee. What is the cost per pound for this coffee
STatiana [176]

Answer:

6.32

Step-by-step explanation:

divide 18.96 by 3  and the outcome is 6.32

6 0
3 years ago
the graph of the function y=x^(2) is reflected across the x-axis, then translated two units left and six units down, write and e
dem82 [27]

Answer: -4,-2

Step-by-step explanation: Since it is reflected across the x- axis, translated two units left and six units down it would be -4, -2 because 2-6= -4

8 0
3 years ago
You buy a shirt for $25 and sales tax is 4.1
Slav-nsk [51]

Answer:

I think $26.03

Step-by-step explanation:

4.1% of $25 is 1.03 ( I rounded it)

so 1.03 is the sales tax.

$25.00 + $1.03 = 26.03

5 0
3 years ago
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