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Vsevolod [243]
4 years ago
9

PLEASE HELP URGENT!!!!!!!

Mathematics
1 answer:
MrMuchimi4 years ago
4 0

Answer:

Choice B is correct

Step-by-step explanation:

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HELLO! 20 PT ANSWER & BRAINLIEST!
beks73 [17]

Answer:

745 books are expected to be donated to the library at the end of Month 10

Step-by-step explanation:

There were 80 books donated at the library:

No=80

The number of books donated to a library is increasing by 25% each month:

There were 100 books donatd at the end of Month 1:

N1=100

N1=No+25%No

N1=No+(25/100)No

N1=No+0.25 No

N1=(1+0.25) No

N1=(1.25) No

(1) N1=(1.25)^1 No

N1=(1.25)^1 80

N1=(1.25) 80

N1=100


N2=N1+25%N1

N2=N1+(25/100)N1

N2=N1+0.25 N1

N2=(1+0.25) N1

N2=(1.25) N1

Replacing equation (1) in the equation above:

N2=(1.25) (1.25)^1 No

N2=(1.25)^(1+1) No

(2) N2=(1.25)^2 No


N3=N2+25%N2

N3=N2+(25/100)N2

N3=N2+0.25 N2

N3=(1+0.25) N2

N3=(1.25) N2

Replacing equation (2) in the equation above:

N3=(1.25) (1.25)^2 No

N3=(1.25)^(1+2) No

(3) N3=(1.25)^3 No


In general:

Nt=N(t)=(1.25)^t No

N(t)=(1.25)^t (80)

N(t)=80 (1.25)^t

where t is the number of the month

How many books are expected to be donated to the library at the end of Month 10?

t=10

N(10)=80 (1.25)^10

N(10)=80 (9.313225746)

N(10)=745.0580596

Rounding to the nearest whole number:

N(10)=745


8 0
3 years ago
Read 2 more answers
A truck driver transported 748 boxes of goods at the first time. And the number of boxes of goods at the second time decreased t
dedylja [7]

Answer: 25% decrease in number of boxes of goods

Step-by-step explanation:

If you want to find a percent of a number you turn the percent into a decimal

Example:

Step 1

25% of 748

Step 2

0.25*748=561

8 0
3 years ago
Please help asap i will mark branlist
Rainbow [258]

Answer:

The answer is B

Step-by-step explanation:

7 0
4 years ago
NO LINKS! Please help me with this problem​
Viktor [21]

Answer:

x=70, y=55

Step-by-step explanation:

Since the angle "y" and 2x-15 form a straight line, that means the sum of the angles, must be 180 degrees.

So using this we can derive the equation: y+2x-15=180

The next thing you need to know is that the sum of interior angles of a triangle is 180 degrees, so if we add all the angles, we should get 180.

So using these we can derive the equation: x+2y=180

So, in this case we simply have a systems of equations. We can solve this by solving for x in the second equation (sum of interior angles), and plug that into the first equation.

Original Equation:

x+2y = 180

Subtract 2y from both sides

x = 180-2y

Now let's plug this into the first equation

y+2x-15=180

Plug in 180-2y as x

y+2(180-2y)-15=180

Distribute the 2

y+360-4y-15=180

Combine like terms

-3y + 345 = 180

Subtract 345 from both sides

-3y = -165

Divide both sides by -3

y=55

So we can plug this into either equation to solve for x

x+2y=180

Substitute in 55 as y

x+2(55)=180

x+110=180

Subtract 110 from both sides

x=70

5 0
2 years ago
Read 2 more answers
At the zoo for every 6 adult camelsthere are 5 baby camels there are a total of 44 adult and baby camels at the zoo how many bab
slavikrds [6]
6adults = 5 babies
12 adults =10 babies
18 adults= 15 babies
24 adults= 20 babies
= 44 total camels
20 babies
7 0
4 years ago
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