NEED HELP PLEASE IM BEGGING YOU PLEASE!!!!! NEED HELP WITH BOTH PLEASE

Mathematics

1 answer:

UkoKoshka [18]3 years ago

8 0

Answer:

14) F

15) D

Step-by-step explanation:

You have 80 minutes on a CD, minus the time you burned would equal the time you have left on the CD.

To find mark down, you multiply the percentage to the original price, and then subtract the answer to the original price.

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A store manager receives a delivery of 2 boxes of light bulbs.Each box contains 25 lightbulbs.The store manager tests all the li

kolezko [41]

Answer:

Step-by-step explanation:

A delivery of 4 boxes will contain 2 more defective lightbulbs than a delivery of 2 boxes.

7 0

2 years ago

in a five character password the first two characters must be digits and the last three characters must be letters if no charact

Vilka [71]

Answer:

1,404,000 unique passwords are possible.

Step-by-step explanation:

The order in which the letters and the digits are is important(AB is a different password than BA), which means that the permutations formula is used to solve this question.

Permutations formula:

The number of possible permutations of x elements from a set of n elements is given by the following formula:

$P_{(n,x)} = \frac{n!}{(n-x)!}$

In this question:

2 digits from a set of 10(there are 10 possible digits, 0-9).

3 characters from a set of 26. So

$P_{10,2}P_{26,3} = \frac{10!}{8!} \times \frac{26!}{23!} = 10*9*26*25*24 = 1404000$

1,404,000 unique passwords are possible.

5 0

2 years ago

What is the mean and the median for 72 75 78 72 and 73

denpristay [2]

Mean: 74
(72+72+73+75+78) divided by 5

median: 73
(line all the numbers up in numerical order then cross out one from each side and repeat process until in the middle)

7 0

2 years ago

Read 2 more answers

I have to determine the length please show me the steps

iogann1982 [59]

Answer:

c = 11.03 m

Step-by-step explanation:

In this given right isoceles triangle, one of the sides are labeled as 7.8 m. We'll label this side as "a."

The length of side "a" is congruent to the other side. Therefore, the measurement of the other side is also 7.8 m.

We can use the Pythagorean Theorem to solve for the measurement of the hypotenuse, side "c."

According to the Pythagorean Theorem: $c^{2} = a^{2} + a^{2}$ .