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4 years ago

Which could not be the number of tennis balls coach kunal has?

Mathematics

1 answer:

lyudmila [28]4 years ago

8 0

Is there an image or equation involved?

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In math class, 4 students complete individual surveys to determine the percentage of high school teachers that have a second job

dlinn [17]

Answer:

Option D) B and C

Step-by-step explanation:

we know that

To find out the percentage of high school teachers that have a second job, divide the number of teachers that have a second job by the total number of teachers

Survey A

$\frac{28}{110}=0.2545$

Convert to percentage

$0.2545(100)=25.45\%$

Survey B

$\frac{27}{90}=0.3$

Convert to percentage

$0.3(100)=30\%$

Survey C

$\frac{21}{70}=0.3$

Convert to percentage

$0.3(100)=30\%$

Survey D

$\frac{32}{80}=0.4$

Convert to percentage

$0.4(100)=40\%$

Compare the percentages

Surveys B and C have the same percentage

therefore

Surveys B and C show proportional results, because the ratio of the number of teachers that have a second job by the total number of teachers is equal (this number is the constant of proportionality k in a proportional relationship between two variables)

8 0

3 years ago

What is nine times whatnumber equals 15

Reil [10]

I wrote that wrong, sorry.

8 0

4 years ago

Read 2 more answers

You are selling cookies for your organization. One box of cookies is sold for $3. Thirty percent of the sale price goes to the b

choli [55]

A) Your organization gets half of the revenue after 30% is deducted. You get ...
(1/2)×($3 - 0.30×$3) = (1/2)×$3×0.70 = $1.05 for each box of cookies

B) If the number you must sell to earn $100 is represented by n, then you have
$1.05×n = $100
n = 100/1.05 ≈ 95.24
To earn $100 for your local chapter, you must sell 96 boxes of cookies.

7 0

3 years ago

a plant grows at a rate of 4.5 centimeters per week. it is now 12 centimeters tall. suppose that the plant continues to grow at

vredina [299]

It will take an additional 8 weeks to reach a height of 48 centimeters.

y = 4.5x

Since, the maximum height is 48 cm and the plant has already grown 12 cm, we deduct the 12 from 48 to get the additional weeks it needs to grow.

48 - 12 = 4.5x
36 = 4.5x
36/4.5 = 4.5x / 4.5
x = 8 weeks.

7 0

3 years ago

Which statement best

Phantasy [73]

Answer:

The First one

Step-by-step explanation:

8 0

2 years ago