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Kipish [7]
2 years ago
6

You are arranging Chairs in an auditorium for the talent show. The number of rows is to be the same as the number of chairs per

row. You will need a total of 225 chairs. How many chairs will be in each row?
Mathematics
2 answers:
denis-greek [22]2 years ago
7 0
The total number of chairs is the product of the number of rows with the number of chairs per row. You can determine this using the dimensional analysis approach. The solution is as follows:

Number of chairs = Number of rows * Number of chairs/row

Since the the unit 'row' appears on both the numerator and denominator side, they will cancel out, leaving us with the number of chairs.

225 chairs = x*x = x², where x is the number of rows which is also equal to the number of chairs per row

x = √225 = 15

Thus, there are 15 rows with 15 chairs each row.
Svetach [21]2 years ago
3 0

Answer:

45

Step-by-step explanation:

divide 225 to 5 equals to 45

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Please help!!
rusak2 [61]
ANSWER TO QUESTION 1

The set of natural numbers that are factors of 20 are natural numbers that divides 20 exactly without a remainder.

These natural numbers are;

{1,2,4,5,10,20}

Therefore the correct answer is D

ANSWER TO QUESTION 2

Given that the universal set U has elements

{1,2,3,4,5,6,7,8,9,10}

and the set P also has elements

{2,4,6,8,10}

The elements of P' are the elements that are in the universal set but are not in set P.

These elements are;

{1,3,5,7,9}

The correct answer is C

ANSWER TO QUESTION 3

The distance is given by the absolute value equation

d=|130-25t|

If the is 15 feet away then d=15

This implies that;

15=|130-25t|

We now split the absolute value sign to obtain,

15=130-25t

or

-15=130-25t

We now solve for t to obtain;

15-130=-25t

or

-15-130=-25t

\frac{115}{25}=t

or

\frac{145}{25}=t

This gives us

4.6=t

or

5.8=t

The correct answer is C

ANSWER TO QUESTION 4

Given

P={0,1,2,3,4,56,7,8,9}

and

V={2,4,6,810,1216,18,20}

P\capV={2,4,6,8}

P\V are  elements in P only .

This means that we have to take out the elements of the intersection of the two sets from P.

P\V ={0,1,3,5,5,7,9}

The correct answer is B

ANSWER TO QUESTION 5

The correct answer is B.

In listing the elements of a set, we do not repeat the element. In order words we list only distinct elements.


Blueberry is repeating in both sets but we have to list it once.

ANSWER TO QUESTION 6.

The correct answer is 220

We were told that 250 play basket ball

If 120 play both sports, then

250-120=130

play only basketball

Now the number of people who play only baseball

350-250=100

But the number of people who play baseball

120+100=220

see diagram

7 0
2 years ago
At a financial services company, the mean percent allocation for bonds in a retirement portfolio is 26.9 percent with a populati
guajiro [1.7K]

Answer: it is a right tailed probability

Step-by-step explanation:

Population proportion = 26.9/100 = 0.269

We are dealing with the fact that the probability that the mean bond percent for the sample will be at least 28. This means that the sample proportion is 0.28 or above. This means that it is greater than the population proportion of 0.269

The hypothesis would be

For null hypothesis

p = 0.269

For alternative hypothesis,

p > 0.269

The inequality sign means that it is right tailed.

3 0
2 years ago
write and solve an equation to find the width of the box if it's volume is 96 cubic centimeters. then find its surface area
Alex73 [517]
There's not enough given information in the question to calculate an answer.

If we only know that the volume of the box is 96 cm³, then there are an infinite
number of different lengths, widths, and surface areas that it could have.
8 0
2 years ago
If someone wants to ask a question that doesn't have a lot is variability, which answer should it be?
nikklg [1K]
I believe its C or D
8 0
2 years ago
Tom saves $750 a year. Bill saves $60 a month. How much more does Tom save a year than Bill?
wlad13 [49]

Answer:

B) 30

Step-by-step explanation:

Bill saves 60 dollars a month so first you have to find out how much he saves in a year

To find that you multiply 60 by 12 since there are 12 months in a year

60*12 = 720

Tom saves 750 in a year so you have to subtract 750 by 720 to know how much more tom saves

750 - 720 = 30

3 0
2 years ago
Read 2 more answers
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