1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
prisoha [69]
3 years ago
8

a band performs free concerts. there are 200 people at the start of the concert. the number of people in the crowd grows 15% eve

ry half-hour. How many people are in the crowd after 3 h? Round to the nearest person (work please)
Mathematics
1 answer:
Sunny_sXe [5.5K]3 years ago
7 0
Well 15 percent would be 30 so the first half 230 then an hour 260 continue adding 30 to the 3rd hour and you would get 380
You might be interested in
A local dairy farmer collects 490 gallons of milk from his cows. He keeps 1/35 of the milk for his own use, and sells the rest.
RideAnS [48]

Answer:

666.4 dollars per day

Step-by-step explanation:

Total milk farmer has is 490 gallons

He keeps 1/35 of 490 gallons

so he keeps = 1/35*490= 14 gallons

He sells remaining milk.

Remaining milk = 490-14 = 476 gallons

1 gallon = 4 quart  (conversion formula)

so 476 gallon = 4 * 476 = 1904 quart

selling price of 1 quart = 35 cents = 0.35 dollars

so selling price of 1904 quart  = 0.35*1904 = 666.4 dollars

So he makes 666.4 dollars per day.

6 0
3 years ago
The length of a rectangle is increasing at a rate of 4 cm/s and its width is increasing at a rate of 8 cm/s. When the length is
iVinArrow [24]

Answer:

Step-by-step explanation:

A = lw \nl\frac{\dA}{\dt} =\frac{\dA}{\text{d}l}\frac{\text{d}l}{\dt} + \frac{\dA}{\text{d}w}\frac{\text{d}w}{\dt} =w\frac{\text{d}l}{\dt} + l\frac{\text{d}w}{\dt} \nll = 20 \text{ cm} \;\; \frac{\text{d}l}{\dt} = 8 \text{ cm/s} \;\;w = 10 \text{ cm}, \;\;  ]\frac{\text{d}w}{\dt} = 3 \text{ cm/s} \nl\frac{\dA}{\dt} =(  10 \text{ cm} )( 8 \text{ cm/s} ) + (  20 \text{ cm} )( 3 \text{ cm/s} )  =140 \text{ cm}^2\!\text{/s}


7 0
3 years ago
A 100-foot rope from the top of a tree house to the ground forms a 45∘ angle of elevation from the ground. How high is the top o
DochEvi [55]

Answer:

The height of tree house is 70.71 feet

Step-by-step explanation:

We are given that A 100-foot rope from the top of a tree house to the ground forms a 45∘ angle of elevation from the ground

Refer the attached figure

Length of rope AC = Hypotenuse =100 feet

The top of a tree house to the ground forms a 45∘ angle of elevation from the ground =\angle ACB = 45^{\circ}

We are supposed to find the height of tree house i.e.AB = Perpendicular

So, Using trigonometric ratio

Sin \theta = \frac{perpendicular}{Hypotenuse}\\Sin 45= \frac{AB}{AC}\\\frac{1}{\sqrt{2}}=\frac{AB}{100}\\100 \times \frac{1}{\sqrt{2}}=AB\\70.71=AB

Hence The height of tree house is 70.71 feet

8 0
3 years ago
Which number line repersents the sum of 1.25+(-0.75
aleksklad [387]

Answer: See explanation

Step-by-step explanation:

You didn't give the options relating to the question.

To solve this first, you need to know that we have to note that (+) × (-) = (-). Therefore, 1.25+(-0.75) will be thesame as writing 1.25 - 0.75. This will then be:

= 1.25 - 0.75

= 0.50

3 0
3 years ago
Read 2 more answers
Solve for m 18m-13m=25 m=
sveta [45]

Answer:

m=0

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
Other questions:
  • In the equation b= a-2, which is the independent variable and which is the dependent variable ? Explain???? need help i don't un
    10·1 answer
  • Find the equation of the line that contains the point (3,9) and is parallel to the line y=4x+1. Write the line in slope-intercep
    12·1 answer
  • Which of the following is the reciprocal of x2-2x-8
    8·1 answer
  • What is 8(2x-7)+2(x-8)=
    8·1 answer
  • Solve for x.<br><br> A.<br> 6<br> B.<br> 8<br> C.<br> 12<br> D.<br> 18
    5·1 answer
  • PLEASE HELP ME ASAP!!! THIS IS DUE TODAY!!!! I need to find y-intercept and slope using (-18,4)&amp;(-7,4)
    5·2 answers
  • (-1, 6) (x -9) determine value of x algebraically, show work.
    14·1 answer
  • What does my teacher not get idk how to do thisss!!
    5·1 answer
  • What is the solution to this equation?
    15·2 answers
  • You are on a 9.7-mile run and have already run 7.85 miles. How many more miles do you need to run?
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!