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Natalija [7]
4 years ago
7

Select the correct answer. An investment banking house conducted a survey to determine how two of its proposed investment plans

for three different age categories are used. This table shows the responses they received. Plan I Plan II Neither Ages 26–35 19 14 17 Ages 36–45 14 28 8 Ages 46–55 27 21 2 What percentage of people preferring plan I are from the 36–45 age group, and what percentage of people from the 46–55 age group prefer plan II? Round your answers to the nearest whole number. A. 23% of people who prefer plan I are from the 36–45 age group, and 42% of people from the 46–55 age group prefer plan II. B. 28% of people who prefer plan I are from the 36–45 age group, and 42% of people from the 46–55 age group prefer plan II. C. 23% of people who prefer plan I are from the 36–45 age group, and 33% of people from the 46–55 age group prefer plan II. D. 28% of people who prefer plan I are from the 36–45 age group, and 33% of people from the 46–55 age group prefer plan II. E. 32% of people who prefer plan I are from the 36–45 age group, and 42% of people from the 46–55 age group prefer plan II.
Mathematics
1 answer:
Nady [450]4 years ago
5 0

Answer: C. 23% of people who prefer plan I are from the 36–45 age group, and 33% of people from the 46–55 age group prefer plan II.

Step-by-step explanation:

Ages - - - - - - - - - - - Plan I - - - Plan II - - - -Neither

26 - 25 - - - - - - - - - - 19 - - - - - - - 14 - - - - - - - 17

36–45 - - - - - - - - - - -14 - - - - - - - 28 - - - - - - - 8

46–55 - - - - - - - - - - - 27 - - - - - - - 21 - - - - - - - 2

Total - - - - - - - - - - - - 60 - - - - - - - 63 - - - - - - 27

What percentage of people preferring plan I are from the 36–45 age group:

Total number preffering plan 1 = (19 + 14 + 27) = 60

Therefore, percentage from 36 - 45 age group :

(14/60) × 100 = 0.23333 × 100 = 23.333 = 23%

2) what percentage of people from the 46–55 age group prefer plan II:

Total number preffering plan 11 = (14 + 28+ 21) = 63

Therefore, percentage from 46 - 55 age group :

(21/63) × 100 = 0.33333 × 100 = 33.333 = 33%

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Alja [10]

slope formula :  \bold{ \sf \dfrac{y_2-y_1}{x_2-x_1}}

a.                          coordinates : (3,12) and (4,16)

\sf \rightarrow \dfrac{16-12}{4-3}

\sf \rightarrow \dfrac{4}{1}

\sf \rightarrow 4

b.                          coordinates : (1,4) and (3,12)

\sf \rightarrow \dfrac{12-4}{3-1}

\sf \rightarrow \dfrac{8}{2}

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⇒ A. Yes. Both slopes are equal to 4

3 0
2 years ago
BRAINLIEST!PLEASE HELP ME
Dafna1 [17]

Answer: Choice B

rose bush: $10, shrub: $4

=========================================

Work Shown:

x = cost for one rose bush

y = cost for one shrub

Rob's equation: 8x+5y = 100

Amy's equation: 8x+8y = 112

Subtract the equations straight down (match terms)

8x - 8x = 0x = 0, x terms go away

5y-8y = -3y

100-112 = -12

After those three subtractions, we end up with this new equation: -3y = -12

That equation solves to y = 4 when you divide both sides by -3

Use this value of y to find x

8x+5y = 100

8x+5(4) = 100 ... replace y with 4

8x+20 = 100

8x+20-20 = 100-20 .... subtract 20 from both sides

8x = 80

8x/8 = 80/8 ... divide both sides by 8

x = 10

We end up with x = 10 and y = 4 pairing up. The two equations, when graphed, cross at the location (10,4). One rose bush costs $10 and one shrub costs $4.

6 0
4 years ago
Rachel uses 75 inches of ribbon to make 4 bows. She uses the same amount of ribbon to make each bow. 1 foot = 12 inches 1 yard =
olasank [31]

Answer: 6.25 yards

Step-by-step explanation:

75 inches = 4 bows

To get 12, you have to multiply 4 by 3. Therefore, you also have to multiply 75 by 3.

75*3 is 225.

225 inches = 12 bows

225 inches is 6.25 yards. Hope this helps :)

5 0
3 years ago
Find the volume of the sphere
ioda

the answer is 12 because half of the sphere is 6 unit and the other half is 6 unit then you just add them and you get 12 units

6 0
4 years ago
Read 2 more answers
Can someone help me with this question please.....
Alex73 [517]

Answer:

y = 541

Step-by-step explanation:

The mean is calculated as

mean = \frac{sum}{count}

Mean of set A = \frac{281+268+225+290}{4} = \frac{1064}{4} = 266

ratio between means = 7 : 12, then

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1739 + y = 2280 ( subtract 1739 from both sides )

y = 541

7 0
3 years ago
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