MATHEMATICS MIDDLE SCHOOL

I just need the answer. ( look at the picture )
I just need the answer. ( look at the picture - 1

Answers

Answer 1
Answer:

Answer:

P * 300000 = 30

.01%

Step-by-step explanation:

Let P equal the percent.  Of means multiply and is means equals

We need to make sure the units are the same.  I will convert km to cm

3 km *1000m/1km  * 100cm/1m =300000 cm

Now we can write the equation

P * 300000 = 30

Divide each side by 300000

P 300000/300000 = 30/300000

P =.0001

Changing this from decimal to percent

P = .0001*100 = .01 %

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Last year. Betsy sold oranges at $7 per crate. This year there was a bumper harvest, so she dropped the priceby 12%. What is the new sale price of a crate of oranges?​

Answers

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Answers

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Take 351 and round it to 350 
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Admission for a movie is $8 for children and $12 for adults. On a certain day, 3200 people attend the movie theater and $33,040 is collected.How many children and how many adults attended the movies?



children

adults

Answers

Let us assume the number of children attending the movie = x
Let us also assume the number of adults attending the movie = y
Cost of admission for a children in the movie = $8
Cost of admission of an adult in the movie = $12
Number of people going to the movie on a certain day = 3200
Total amount collected from the movie theater = $33040
Then
x + y = 3200
And
8x + 12y = 33040
2x + 3y = 8260
Let us first take the equation
x + y = 3200
x = 3200 - y
Now we will put the value of x in the equation
2x + 3y = 8260
2(3200 - y) + 3y = 8260
6400 - 2y + 3y = 8260
y = 8260 - 6400
   = 1860
Now we will put the value of y from the above deduction in the equation
x + y = 3200
x + 1860 = 3200
x = 3200 - 1860
   = 1340
So the number of children going to the movie theater is 1340 and the number of adults going to the movie theater is 1860.

10010,UUS
11. A ball is thrown upward at a velocity of 15 meters per second from a height that is 20
meters above the ground. The height h (in meters) of the ball at time t in seconds) after it
is thrown can be found by h(t) = -5t^2 + 15t + 20. Find the time when the ball is again 20
meters above the ground.
A
1 second
(B
2 seconds
C
3 seconds
D
4 seconds

Answers

The correct answer is B

Harold walks 3/4 mile in each 5/6 hour. Calculate Harold's unit rate. Explain how you found your answer.

Answers

To solve this problem, you must apply the proccedure shown below:

 1. The problem gives the following information: Harold walks 3/4 miles in each 5/6 hours. Therefore, you have to divide  3/4 miles by 5/6 hours, as below:

 unit rate=(3/4)(5/6)
 unit rate=(3x6)(4x5)
 unit rate=18/20 

 3. When you simplify, you obtain:

 unit rate=9/10

 4. Therefore, as you can see, the answer is: Harold's unit rate is 9/10.

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Answers

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-Amanda
2 7/8 + 2 3/8= 4 10/8, which equals 5 2/8, which is also equal to 5 1/4
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