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lakkis [162]
3 years ago
7

YOU CAN CHANGE SUBTRACTION TO ADDITION, BUT YOU DON'T CHANGE ADDITION TO SUBTRACTION WHEN CALCULATING INTEGERS?

Mathematics
1 answer:
olya-2409 [2.1K]3 years ago
5 0

Step-by-step explanation:

<h2>a - b = a + (-b)</h2><h2>a + b = a - (-b)</h2>

for any real numbers

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A 6000​-seat theater has tickets for sale at ​$25 and ​$40. How many tickets should be sold at each price for a sellout performa
Lena [83]

Step-by-step explanation:

Let x be the amount of tickets sold for $25 and y be the amount of tickets sold for $40, since there are 6000 seats theatre then;

x+y = 6000 .............. 1

If x tickets cost $25 and y tickets are sold for $40 with total revenue of ​$174,000, then;

25x + 40y = ​174,000................ 2

From 1, x = 6000-y ............ 3

Substitute equation 3 into 2:

25x + 40y = ​174,000.

25(6000-y) + 40y = ​174,000

150,000-25y + 40y = 174,000

150,000+15y = 174,000

15y = 174,000-150,000

15y = 24,000

y = 24,000/15

y = 1600

Substitute y = 1600 into equation 3:

x = 6000-y

x = 6000-1600

x = 4400

<em>Hence 4400 $25 tickets and 1600 $40 tickets must be sold to generate a revenue of $174,000</em>

4 0
3 years ago
In a recent 10-year period, the change in number of visitors to U.S national parks was about -11,150,000 visitors what is the ye
Debora [2.8K]

10 year ×12 months=120 months

11150000÷120=

That is the answer, sorry I am going out can't find the answer

4 0
2 years ago
.Damian wrote the number five and thirty-eight thousandths as 5.38. Was he correct or not? if so, what was the error
eduard

Answer:

he is incorrect.

Step-by-step explanation:

It would be 5 and 38 HUNDRETHS because the first number after the decimal is the tenths.

5 0
2 years ago
What fraction of an hour is 18 minutes?<br> Give your answer in its simplest form.
enot [183]

Answer:

3/10

Step-by-step explanation:

An hour is 60 mins

so the fraction would be 18/60

Then you can divide both numbers by 6 to 3/10

4 0
2 years ago
Read 2 more answers
Find the approximate value of the circumference of a circle with the given radius. UseT 3.14. Round your results to one more dec
Temka [501]

Answer:

25.1 inches

Step-by-step explanation:

Radius of the circle = 4 inches

We have to calculate the value of Circumference of the circle.

The formula to calculate the circumference is:

Circumference = 2πr

We have to use π = 3.14, as said in the question:

So using the values, we get:

Circumference = 2 x 3.14 x 4 = 25.12 inches

Number of decimals in radius is zero, so we have to round the answer to one decimal place as said in the question.

Therefore, the circumference of the circle rounded to one decimal place will be 25.1 inches

3 0
3 years ago
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