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Scrat [10]
3 years ago
7

What is 3/4 plus 4/5?

Mathematics
1 answer:
andrew-mc [135]3 years ago
4 0

3/4 +4/5

find the common denominator which is 20

multiply by 5 for 3/4

(3)(5)/(4)(5)=15/20

multiply by 4 for 4/5

(4)(4)/(5)(4)=16/20

15/20+16/20

=31/20

answer:

31/20, 1 11/20 and 1.55

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SAT Help
posledela
Well, their speeds are (V_1 is Jack's speed, and V_2 is Richard's.
V_1 = \frac{1}{5} houses/day \\ V_2 = \frac{1}{7} houses/day \\ V = V_1 + V_2 = \frac{1}{5}+\frac{1}{7} = \frac{7+5}{35} = \frac{12}{35}
They, together, can paint 12 houses in 35 days. To get a single house, we only have to calculate \frac{35}{12} which is very close to 3 (a bit below)
5 0
3 years ago
Read 2 more answers
A company produces x units of a product per month, where c(x) represents the total cost and r(x) represents the total revenue fo
Nat2105 [25]

Answer:

The total profit P(x) or the month is P(x)=-0.5x^2+500x-350.

Step-by-step explanation:

A company produces x units of a product per month.

The total cost represents by the function C(x).

C(x)=300x+250

The total revenue represents by the function R(x).

R(x)=-0.5x^2+800x-100

The profit is the difference between revenue and cost.

P(x)=R(x)-C(x)

P(x)=-0.5x^2+800x-100-(300x+250)

P(x)=-0.5x^2+800x-100-300x-250

Combine like terms.

P(x)=-0.5x^2+(800x-300x)+(-100-250)

P(x)=-0.5x^2+500x-350

Therefore, the total profit P(x) or the month is P(x)=-0.5x^2+500x-350.

5 0
3 years ago
Which set of ordered pairs represents a function?
Lemur [1.5K]
It would be D, because to be a function, a set of ordered pairs cannot have the same x value. The y value can be the same though.
(5,6), (8,6), (9,6) 
As you can see, all of the x values are different, so it is a function.
6 0
3 years ago
Read 2 more answers
Please help. will give brainliest ​
jenyasd209 [6]

Answer:

C

Step-by-step explanation:

General probability is 3+5+4=12

3+4=7 (oranges and bananas answer is c

7 0
3 years ago
To solve the system of equations 6x – 4y = 9 and
mixer [17]

Answer:

4x-2y=6

Step-by-step explanation:

i believe this works

6 0
2 years ago
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