as a town gets smaller the population of its high school decreases by 5% each year. The senior class has 160 students now. In how many years will it have about 100 students? Write an equation. Then solve the equation without graphing. Write an equation to represent the situation. Let n be the number of years before the class will have 100 students.
Answers
Answer:
T_n = 160(0.05)^(n - 1)
At T_n = 100, n = 1 year
Step-by-step explanation:
We will use geometric progression to solve this question.
Formula for nth term of a GP is;
T_n = ar^(n - 1)
We are told the population of its high school decreases by 5% each year.
This means r = 0.05
senior class has 160 students. Thus a = 160
Thus,T_n = 160(0.05)^(n - 1)
Where n is number of years after now.
We want to find the number of years before the class will have 100 students
Thus;
160(0.05)^(n - 1) = 100
(0.05)^(n - 1) = 100/160
(n-1)In 0.05 = In (100/160)
-2.9957(n - 1) = -0.47
(n - 1) = 0.47/2.9957
n = 1 + 0.1569
n = 1.1569
Approximating to the nearest whole number gives n = 1
Related Questions
A cube has a side length of 4 feet. What is the volume of the cube?
48 ft3
64 ft3
96 ft3
12 ft3
Answers
Answer:
64 square ft^3
Step-by-step explanation:
If the side lengh is 3 then you would have 4^3 which is 64.
Answer:
64
Step-by-step explanation:
what is 2.006 + 6.001?
Answers
2.006
+ 6.001
__________
8.007
So, therefor, the answer is 8.007.
Don Pedro tenía una parcela de 10 hectareas, vendió la quinta parte y el resto lo dividió entre sus 4 hijos, cuantas hectareas recibió cada uno?
Answers
What's 64/4 in the simplest form
Answers
Answer:
16
Step-by-step explanation:
64 divided by 4 is equal to 16.
help please! ill mark brainliest!
Answers
Answer:
e=57⁰
d=104⁰
Step-by-step explanation:
in isosceles triangle the side and measures are equal
Quick help please!!!
Answers
Answer:
D
Step-by-step explanation:
this isnt highschool, u are dum
4x8 i know the anwser im just tryna see something
Answers
Answer:
32
Step-by-step explanation:
Answer:
The Answer is 32
Step-by-step explanation:
8*4=32
4*8 = 32
2. Find the measure of x.
Answers
Answer:
x = 69 degrees
Step-by-step explanation:
180 - 146 = 34
180 - 77 - 34 = 69
x = 69 degrees
find the measure of angle STP
Answers
Step-by-step explanation:
∠STP=∠SWT+∠TSW(exterrior ∠ of Δ)
15x=7x+1+7x+6
x=7
what is 3 divided by 1/5 :(
Answers
Answer:
15
Step-by-step explanation:
that's what gogle said
Answer:
15
Step-by-step explanation:
3÷1/5=3×5=15
when you want to divide by a fraction (n/d), flip the numbers and make multiply sign, but make sure always flip the second number (the number after the divide sign) and not the first and change the divide to multiply
If we give the cashier a $20 bill for a shirt that costs $22.95, how much more do we owe the cashier?
Answers
Answer:
$2.95
Step-by-step explanation:
$22.95-$20
explanation:
20 - 22.95 = -2.95
what is the answer to this question?
Answers
Answer:
your answer will be option B
you are right
Step-by-step explanation:
have a nice day!!
What is the range of the function fx) = -2(6x) + 3?
(-∞,-2]
(-∞,3)
[-2,∞)
[3,∞)
Answers
Pls help ASAP in a call with only my teacher
Answers
Answer:
a
Step-by-step explanation:
the answer is a. 6 faces 12 edges and 8 vertices
Answer:
I beleive it is the first option
Step-by-step explanation:
Simplify the expression 7h +(-5.9d) – 17+4d -3.4h
Please help me need it done ASAP
Answers
Answer:
−1.9d+3.6h-17
Step-by-step explanation:
You just need to combine like terms ;)
Hope it helps, let me know
Simplify the expression so there is only one power for each base.
Answers
Answer:
Step-by-step explanation:
a (-5 + 3) = -2 ; (-7-4) = -11
FFFFFRrrRRreeeeeeeee PPPPOOOOOIIIINNNNTTTTTSSSSSS
Answers
Answer:
OMG! Thank you mate..... :D
Fifteen pencils are sold for $750. what is the cost for 1 pencil ?
Answers
Because you to do 750/15 to get you X
Answer:
50$
Step-by-step explanation:
750/15=50
(do u mean 7.50 cuz if u did its 0.50 cents)
need help asap will give brainly
Answers
Answer:
x = 60
Step-by-step explanation:
So, ever triangle, no matter what shape or size, is always going to equal 180 degrees. You start off by trying to find angle L which is 71. The way you find this is you subratch 109 from 180 which ultimately gives you 71.
180 - 109 = 71
After that you have to add what you already have (49 degrees) with what you just found (71 degrees)
49 + 71 = 120
Now that you have 120, you have to again subtract 180 by 120 to get your answer, 60 degrees. And that's it.
180 - 120 = 60
4x + (-3) = -11
What is my answer can You please help me
Answers
Answer:
-2
Step-by-step explanation:
Let's solve your equation step-by-step
4x−3=−11
Step 1: Add 3 to both sides
4x−3+3=−11+3
4x=−8
Step 2: Divide both sides by 4
4x
4
=
−8
4
x=−2
Answer:
[tex]4x + ( - 3) = - 11 \\ 4x (- 3) = - 11 \\ 4x = - 11 + 3 \\ 4x = - 8 \\ x = \frac{ - 8}{4} \\ x = - 2[/tex]
find the value of x plz
Answers
As you look closely at the diagram the angle outside the angle and x are exterior angles and exterior angles are equal
Suzy needs a raise in her allowance to buy the new iPhone. In order to do so, she must make a total average of 90 in all of her classes. Her science average is an 85, her math average is a 92, her history average is a 95, and her choir class is a 95. Her English class is undetermined as of now. What does Suzy have to make in English to be able to receive her raise?
Answers
Answer:
83
Step-by-step explanation:
Total averages from the known classes
85+92+95+95=367
367+83=450
Divide 450 by the number of classes she has(5)
=90
f(x) = 5 – 0.2c and g(x) = 0.2(x + 5).
Answers
Answer:
i recommend math-way's they give you step by step or if you are work on Big ideas work use Slader they have all the answers
Step-by-step explanation:
When you multiply 2 decimals, how do you know where to place the comma in the product?
Answers
Answer:
you mean the decimal point?
Step-by-step explanation:
You will know when you cross the decimal point when multiplying.
Answer: it would just be like putting a comma normally, just all you have to do is get your new number but then just add both the comma and decimal it shouldn’t effect on where its put! If that’s what your asking!
Step-by-step explanation:
A grain silo is shaped like a cylinder with a height of 24 feet and a diameter of 10 feet. A farmer wishes to determine how many cubic feet of grain could fit in the silo.
What is the maximum amount of cubic feet of grain that the silo could hold?
O A 7539 cubic feet
B
2400 cubic feet
C
1884 cubic feet
O
D
600 cubic feet
Answers
Answer:
1884.95
Step-by-step explanation:
cylinder volume formula = [tex]\pi[/tex] * height * radius^2
diameter/2 = radius = 10/2 = 5
\pi * 24 * 25 = 600\pi cubic feet = 1885 when rounderd from 1884.955592
Answer:
1884
Step-by-step explanation:
Which of the following is the correct expanded form for the series below?
4
Σ-22
»=0
O-1-2-4-8-16
1-2 + 4-8 + 16
O-2-4-8-16
0-2 + 4 - 8 + 16
Answers
Answer:
-1-2-4-8-16
Step-by-step explanation
The solution is, 1-2 + 4-8 + 16, is the correct expanded form for the series Σ-2^n, n = 0 to 4.
What is an exponent in math?An exponent refers to the number of times a number is multiplied by itself. For example, 2 to the 3rd (written like this: 23) means: 2 x 2 x 2 = 8. 23 is not the same as 2 x 3 = 6. Remember that a number raised to the power of 1 is itself.
here, we have,
given that,
the series Σ-2^n, n = 0 to 4.
now, we have to find,
the correct expanded form for the series ,
as , we get,
the value of n = 0 to 4
so, putting the value of n = 0,1,2,3,4
we get the series as,
Σ-2^n
= -2^0 + (-2)^1 + (-2)^2 + (-2)^3 + (-2)^4
= 1 -2 + 4 - 8 +16
Hence, The solution is, 1-2 + 4-8 + 16, is the correct expanded form for the series Σ-2^n, n = 0 to 4.
To learn more on exponent number click:
brainly.com/question/19467739
#SPJ7
A TV is originally priced at $350. There is a coupon for 40% off. After the 7% sales tax, what is the price you would pay for the tv
Answers
Answer: $234.5
Step-by-step explanation: when you get a 40% off that means you would pay 60% but then you have to play 7% so you have to pay 67% of 350 wich is 234.5
Answer:
$149.8
Step-by-step explanation:
40% of 350 is 140
7% of 140 is 9.8
Solve
b/5 - 37 < -44
Answers
Answer:
Step-by-step explanation
B<-35
wou help video
What is the image of (-9,0) after a dilation by a scale factor of 2 centered at
the origin?
Answers
Answer:
The image is (-18,0)
Step-by-step explanation:
Here, we want to find the image of the given point after dilation by the given scale factor
Mathematically, given a point with the pre-image (x,y) going under the dilation of scale factor k, centered at the origin, the coordinates of the image will be;
(kx , ky)
Applying this in the given scenario, we have
(2(-9) , 2(0))
= (-18,0)
How many minutes would it take a drone to travel 100 km at a speed of 40 km/min?
Answers
Answer:
Divide
Step-by-step explanation:
If you divide them then you get 2.5
Answer:
Kilometers per hour is often used for car speeds. One hour at this speed moves you 100 km
Step-by-step explanation:
i have a headache sorry if wrong