Answer:
Job: 1240
Borrow: 4960
Step-by-step explanation:
15,500-800-8500=6200
6,200*.2=1240
which is for the job.
6200-1240= 4960
which is how much she needs to borrow.
The volume of the shape will be 5652cm³.
<h3>How to calculate the volume?</h3>
The given values are:
Height = 30cm
Large diameter = 16cm: Radius = 16/2 = 8cm
Small diameter = 4cm; Radius = 4/2 = 2cm
The volume will be:
= (3.14 × 8² × 30) - (3.14 × 2² × 30)
= 6028.8 - 376.8
= 5652cm³
Learn more about volume on:
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Answer:
5126.52
Step-by-step explanation:
Time = 25 years
Population after 25 years = 29000
Biologists observe that the population doubles every 10 years, and now the population is 29,000
No. of 10 years in 25 years = ![\frac{25}{10}=2.5 years](https://tex.z-dn.net/?f=%5Cfrac%7B25%7D%7B10%7D%3D2.5%20years)
So, t = 2.5 years
Rate = 2
Formula = ![y=ab^t](https://tex.z-dn.net/?f=y%3Dab%5Et)
y is the population after t years
a is the initial population
b = rate
t = time
![29000=a(2)^{2.5}](https://tex.z-dn.net/?f=29000%3Da%282%29%5E%7B2.5%7D)
![\frac{29000}{(2)^{2.5}}=a](https://tex.z-dn.net/?f=%5Cfrac%7B29000%7D%7B%282%29%5E%7B2.5%7D%7D%3Da)
![5126.52=a](https://tex.z-dn.net/?f=5126.52%3Da)
Hence the initial size of the bird population is 5126.52
Answer:
Kindly check explanation
Step-by-step explanation:
Given the model:
s = 10│x - 4│+ 50
s represents the sound level in decibels and x represents the number of measures of music played
To find x at s = 80
The equation becomes /
80 = 10│x - 4│+ 50
Subtract 50 from both sides of the equation
80 - 50 = 10 |x - 4| + 50 - 50
30 = 10 | x - 4 |
Divide both sides by 10
30/10 = 10|x - 4| / 10
3 = |x - 4|
|x - 4| is an absolute value expression
±3 = |x - 4|
x = 3 + 4 = 7
x = - 3 + 4 = 1
Add the sides together and u get 19!