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masya89 [10]
2 years ago
5

1. Create an ungrouped frequency distribution table with the data from the survey concerning the age of the people, which attend

the gym. The results of a survey are presented below.

Mathematics
1 answer:
lukranit [14]2 years ago
4 0

Answer:

firstly ,we need to put the set of  ages into categories

Example: (Category1 = age 19  ; category2 = age 20  ; ........ )

→ The frequency of a certain value (age) is equal to the number of times that specific age appears in the data set.

Step-by-step explanation:

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a foreman must order enough sod to cover a dirt area 36 feet wide by 28 feet long. each piece of sod is 3 feet long and 12 inche
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10 1/2 cups of flour are needed to make 3 loaves of bread. How many cups are needed for 12?
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Answer:

42 cups of flour

Step-by-step explanation:

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3 years ago
What is the solution to the system of equations y=-1/3x+9 and y=2/3x+12
amm1812

Answer:

{x = -3 , y = 10

Step-by-step explanation:

Solve the following system:

{y = 9 - x/3 | (equation 1)

{y = (2 x)/3 + 12 | (equation 2)

Express the system in standard form:

{x/3 + y = 9 | (equation 1)

{-(2 x)/3 + y = 12 | (equation 2)

Swap equation 1 with equation 2:

{-(2 x)/3 + y = 12 | (equation 1)

{x/3 + y = 9 | (equation 2)

Add 1/2 × (equation 1) to equation 2:

{-(2 x)/3 + y = 12 | (equation 1)

{0 x+(3 y)/2 = 15 | (equation 2)

Multiply equation 1 by 3:

{-(2 x) + 3 y = 36 | (equation 1)

{0 x+(3 y)/2 = 15 | (equation 2)

Multiply equation 2 by 2/3:

{-(2 x) + 3 y = 36 | (equation 1)

{0 x+y = 10 | (equation 2)

Subtract 3 × (equation 2) from equation 1:

{-(2 x)+0 y = 6 | (equation 1)

{0 x+y = 10 | (equation 2)

Divide equation 1 by -2:

{x+0 y = -3 | (equation 1)

{0 x+y = 10 | (equation 2)

Collect results:

Answer:  {x = -3 , y = 10

3 0
3 years ago
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