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beks73 [17]
3 years ago
6

I need help understanding this please

Mathematics
2 answers:
Roman55 [17]3 years ago
7 0

Answer:

Step-by-step explanation:

324 square centimeters can easily be broken down into the multiplication expression 18 x 18.

since Alma's lace border will follow that area, at 98 cents for every 2 centimeters, we can do as such:

18/2=9\\ [there are 9 sets of two centimeters on each side, meaning that our equation would look something like this:]\\ 9(0.98)^2\\ [which would equal something around] 8.6436\\\\ [that] 8.6436\\ [is the total price of the area the lace takes.]\\

This doesn't necessarily answer your question, but i hope i did a good job explaining! if im wrong, please, correct me!

valentinak56 [21]3 years ago
6 0

Answer:

<em>Alma needs $35.28 to purchase the lace for her pillow.</em>

Step-by-step explanation:

If it is a square, the length and the width would be the same. You have to take the square root of the area, so the square root of 324 is 18. Now, we know that the length is 18 cm and the width is also 18 cm. If she's selling every 2 centimeters for 98 cents, you have to find the total amount of centimeters the pillow has, so 18*4 (the 4 comes from the number of sides on the pillow)=72.

Now divide that answer by the 2 lace centimeters she will get. (72/2=36 cm).

Now multiply that by 98 cents, the cost. (36*0.98=35.28).

So Alma needs $35.28 to purchase the lace for her pillow.

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Triple n, then multiply 7 by the result
likoan [24]

Answer:

21n

Step-by-step explanation:

1. triple n = 3(n)

3n

3. multiply 7 = 7(3n) = 21n

4 0
3 years ago
How many 5-digit palindromes contain only even digits?
34kurt

Answer:

The correct answer is - 900

Step-by-step explanation:

A palindrome is a positive integer that is same whether read from left to right or from right to left. For example, 123321 palindromes.

An n-digit palindrome is determined from the first  n/2  digits if n is even, and from the first n+1/2 digits if n is odd.

Therefore, if  n  is even, there are  9×10⁽n⁻²/²⁾  palindromes; and if n is odd, there are  9×10⁽n₋²/²⁾ palindromes.  where n is number of digits.

For  n=5 , there are  9×10²=900 palindromes

3 0
3 years ago
Suppose a computer technical support representative can answer calls from 8 customers in an hour. What is the probability that a
Ganezh [65]

Answer:

Option d

Step-by-step explanation:

We need 2 fundamental data to solve this problem.

1.- Average number of clients attended in 1 hour.

2.- Time in which it is expected that a client will be attended.

They tell us that the average number of clients served in an hour is m = 8

They tell us to calculate the probability that the client will be seen in less than 15 minutes.

But the time t in the formula is given in hours.

Therefore we must write 15 minutes according to hours.

We know that 1\ hour = 60 minutes.

So:

15\ minutes[\frac{1\ hour}{60\ minutes}] = 0.25\ hours.

Now we substitute in the formula m = 8 and t = 0.25 to find P.

P = 1 -e^{-mt}\\\\P = 1- e^{-(8)(0.25)}\\\\P = 1 - e^{-2}\\\\P = 0.8646\\\\P= 86\%

4 0
3 years ago
Read 2 more answers
Question 1
Vitek1552 [10]

Answer:

M.A.D= 4.9

Step-by-step explanation:

Given

12.7, 22, 23.5, 24, 11, 22

Required

Determine the M.A.D

Start by calculating the Mean

Mean = \frac{\sum x}{n}

In this case, n = 6

So:

Mean = \frac{12.7 + 22 + 23.5 + 24 + 11 + 22}{6}

Mean = \frac{115.2}{6}

Mean = 19.2

Subtract the mean from each element

12.7 - 19.2 = -6.5

22 - 19.2 = 2.8

23.5 - 19.2 = 4.3

24 - 19.2 = 4.8

11 - 19.2 = -8.2

22 - 19.2 = 2.8

Take absolute value of the results above

|-6.5| = 6.5

|2.8| = 2.8

|4.3| = 4.3

|4.8| = 4.8

|-8.2| = 8.2

|2.8| = 2.8

The mean of the above gives the MAD

M.A.D= \frac{\sum |x - u|}{n}

M.A.D= \frac{6.5 + 2.8 + 4.3 + 4.8 + 8.2 + 2.8}{6}

M.A.D= \frac{29.4}{6}

M.A.D= 4.9

7 0
3 years ago
A rectangular prism has a length of 7 cm, a width of 4 cm, and a height of 2 1/2cm.
Anika [276]

Answer:

560 cubes

Step-by-step explanation:

Volume of prism: lwh, 7*4*2.5, 70cm!

Volume of cubes: lwh, 0.5*0.5*0.5, 0.125cm!

70cm/0.125cm=560 cubes.

3 0
3 years ago
Read 2 more answers
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