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d1i1m1o1n [39]
2 years ago
13

Please explain and show work

Mathematics
2 answers:
Natali [406]2 years ago
7 0
Answer should be 45.5
Ksju [112]2 years ago
3 0

Answer:

45.5

Step-by-step explanation:

Divide 26 by 4 and then you know how much jurgen can bike an hour, then multiply by 7

You might be interested in
If the diameter is 21m what is the radius?<br><br> if the radius is 3.25mm what is diameter?
RoseWind [281]

Answer:

(a)

radius=diameter/2

=21/2=10.5m

(b)

radius=diameter/2

=3.25/2=1.625mm

I would appreciate if my answer is chosen as a brainliest answer

3 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
I'll mark u as brainliest pls help with these 2 questions ​
aev [14]

Answer:

3, 10

Step-by-step explanation:

1.

5x-1=14 ->

5x=15 ->

x=3.

2.

15+3x=45 ->

3x=45-15=30 ->

3x=30 ->

x=10.

Hope that help! :)

5 0
2 years ago
Read 2 more answers
Quintin stopped and bought 16.9 gallons of gas at a rate of $3.75 per gallon. How much did Quintin pay for the gas?
zmey [24]

Answer:

63.375 or $63.38

Step-by-step explanation:

Multiply the two numbers

7 0
3 years ago
Which functions have a horizontal asymptote? Check all that apply.
Anarel [89]
If I could see the photo I could help you answer the question
6 0
3 years ago
Read 2 more answers
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