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statuscvo [17]
2 years ago
8

For 15 hours of work, a plumber charges $435. If he charges the same amount for each hour of work, which table shows the correct

relationship between what he charges and the number of hours he works?
The attachment shows the full problem

Mathematics
2 answers:
Volgvan2 years ago
7 0

Answer:

29

Step-by-step explanation:

$435 divided by 15 is 29

(I think this is the equation)

Alik [6]2 years ago
4 0
The second option because it increases proportionally

Step by step explanation:
435\15 =29
29x3=87
29x5=145
And so on and so on
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A survey asked 25 students about their favorite sport. A frequency table of their responses is below.
Maksim231197 [3]

Answer: The second one

Step-by-step explanation:

response/25=x/100 and then you solve for x

5 0
2 years ago
How do i find the circumference of a circle? If I use a 3 as an estimate of pie and the circle is 10 mm across
Llana [10]
If you're using pie it would be

2*\pi*5 because the radius is half of the diameter.

But since you're using three it's

2*3*5

If it helps remember: Twinkle twinkle little star, circumference equals 2 pi r
8 0
3 years ago
Explain how the statement "there is 3/4 cup per serving" represents a rate.
Aleonysh [2.5K]
There is 3/4 cup of whatever in one serving. If that serving amount changed to 2, then the 3/4 would be multiplied by 2. If there is half a serving, then it would be divided by 2. There is a constant change, and not one that is always changing. 
7 0
3 years ago
Can you help with these two questions?
Lady bird [3.3K]

1) 155.91 grams would be left after 10 years

2) The population would be 376,478 in 2040

Step-by-step explanation:

The form of the exponential function is y=a(b)^{x} , where

  • a is the initial amount (y at x = 0)
  • b is the growth/decay factor
  • b = 1 + r, where r is the rate of growth
  • b = 1 - r, where r is the rate of decay

1)

Scientists are studying a 500 grams sample of a radioactive element, which has an annual decay rate of 11%

∵ The initial amount is 500 grams

∴ a = 500

∵ The annual decay rate is 11%

∴ r = 11% = 11 ÷ 100 = 0.11

∵ b = 1 - r ⇒ decay

∴ b = 1 - 0.11 = 0.89

- We need to find how many grams of the sample would be left

  after 10 years

∴ x = 10

- Substitute all of these values in the form of the exponential function

∵ y=500(0.89)^{10}

∴ y = 155.9085996

- Round it to 2 decimal places

∴ y = 155.91

155.91 grams would be left after 10 years

2)

In 2000, the population of an Ohio town was 140,212. The population is expected to grow at a rate of 2.5% each year

∵ The population of an Ohio town was 140,212

∴ a = 140.212

∵ The population is expected to grow at a rate of 2.5% each year

∴ r = 2.5% = 2.5 ÷ 100 = 0.025

∵ b = 1 + r ⇒ growth

∴ b = 1 + 0.025 = 1.025

- We need to find the population in 2040

∵ The number of years is 2040 - 2000 = 40 years

∴ x = 40

- Substitute all of these values in the form of the exponential function

∵ y=140212(1.025)^{40}

∴ y = 376478.1709

- Round it to the nearest whole number

∴ y = 376,478

The population would be 376,478 in 2040

Learn more:

You can learn more about the functions in brainly.com/question/11921476

#LearnwithBrainly

6 0
3 years ago
A bus travels 10km in 15 min if the speed of the bus remains the same how far would the bus travel in 3hrs?
motikmotik

Answer:

120km

Step-by-step explanation:

10km in 15 min

3hrs = 3 x 60 min = 180 min

180min divided by 15min = 12

12 x 10km = 120 km

3 0
3 years ago
Read 2 more answers
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