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Effectus [21]
3 years ago
7

Simplify the rational expression. 5x - 40 / 64 - x^2

Mathematics
1 answer:
Maru [420]3 years ago
7 0
5x - 5 over 8 - x ^ 2
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Which situation represented by 25/9 ?​
faltersainse [42]

Answer:

the answer is 2.7777

Step-by-step explanation:

You just divide!

8 0
3 years ago
The average speed to go by car from home to college is 30 miles per hour. The average speed to go back home from college is 20 m
Levart [38]

Answer:

24 mph for both 60 miles and 40 miles.

Step-by-step explanation:

We need to find how long it takes to get to college and from it.

Speed x time (x) = Distance (60)

30x = 60

x=2

It takes two hours to get to college

20x = 60

x = 3

It takes 3 hours to get back. It's a total of 5 hours, 2 hours at 30mph and 3 at 20. Now we need to find the average

30+30+20+20+20=120

120/5= 24

The average speed for the round trip is 24.

To do the second part, we follow the same process, but replace 60 with 40 for distance.

30x=40

x= 1.33

20x=40

x=2

We can add the total distance and divide by total time to find the average.

The total distance is 80. Time is 3.33

80/3.33=24

The average speed is still 24.

3 0
3 years ago
A musician has just purchased a theremin — an instrument that can be played by moving your hands in the air. For every 30 centim
Kobotan [32]

Answer:

1665 hertz

Step-by-step explanation:

30 x 3.33 = 1 (1 meter) so 500 x 3.33 = 1665 (1 meter of movement)

8 0
2 years ago
Please help!
nasty-shy [4]
Right change flip it's simple
4 0
3 years ago
The output is three less than the input
Liono4ka [1.6K]
Call the output f(x)
Call the input x
f(x) = x - 3
8 0
3 years ago
Read 2 more answers
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