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zepelin [54]
2 years ago
11

If i can finish 1 class every 2 days how many days would it take to finish 42 classes

Mathematics
2 answers:
Maurinko [17]2 years ago
7 0
Answer is 84 because of my equation that I have done
1class = 2days
42 classes = ?
Flip 1 and 42
And then multiply 2 by 42 and there is ur answer

kherson [118]2 years ago
5 0

Answer:

84 days

Step-by-step explanation:

If you can finish 1 class in 2 days then that can be expressed as:

1C = 2D

C = 2D

How many days would it take to finish 42 classes? Multiply both sides by 42:

42C = 2D * 42

42C = 84D

Therefore, it will take 84 days to finish 42 classes.

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klemol [59]
Idk what is the answers
5 0
3 years ago
A car rental agency rents 190 cars per day at a rate of 29 dollars per day. for each 1 dollar increase in the daily rate, 5 fewe
Leviafan [203]

The equation that we can create from this situation is:

i = (190 – 5 x) * (29 + x)

where i is the income and x is the increase in daily rate

Expanding the equation:

i = 5510 + 190x – 145x - 5x^2

i = -5x^2 + 45x + 5510

Taking the 1st derivative:

di/dx = -10x +45

Set to zero to get the maxima:

-10x + 45 = 0

x = 4.5

 

So the cars should be rented at:

29 + x = 33.5 dollars per day

 

The maximum income is:

i = (190 – 5*4.5) * (33.5)

i = 5,611.25 dollars

7 0
3 years ago
The perimeter of the triangle at the right is 22.6 in. What is the value of n?
blagie [28]

Answer:

A. 3.5

Step-by-step explanation:

The perimeter is just the sum of all of the side lengths. The sides of this triangle are n inches, (n + 5.2) inches, and (2n + 3.4) inches.

So, your equation is n + n + 5.2 + 2n + 3.4 = 22.6 inches.

You can combine like terms (adding together all of the n's and all of the numbers) to simplify your equation to 4n + 8.6 = 22.6 inches.

Subtract 8.6 from both sides of the equation to get 4n = 14, and divide both sides by 4 to get n = 3.5.

Hope this helps! :)

8 0
2 years ago
How to do this question plz ​
MrRissso [65]

Answer:

10:1

90 red counters

30 blue

1/3 of 90 =30

80% of 30 =24

90-30 =60 remaining red counters

30-24 =6 remaining blue counters

= 60:6 simplest form is 10:1

8 0
3 years ago
Write a real-world problem involving a percent that can be solved by using the proportion 3/b = 60/100. Then solve the proportio
sergey [27]
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3 years ago
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