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castortr0y [4]
3 years ago
9

Simplifying Rational Expressions

Mathematics
1 answer:
Evgen [1.6K]3 years ago
4 0
B^-2 / b^-3  = b^(-2-(-3) = b^1  = b

answer is d
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A runner covers the last stretch of a race in 4 seconds, during that time he speeds up from 5 m/s to 9 m/s what is the runners a
patriot [66]

Answer:

1m/s^2

Step-by-step explanation:

the formula for acceleration is change in velocity divided by time

the change in velocity is 4m/s (subtract 5 from 9)

the change in time is 4 seconds

so 4m/s ÷ 4s

this gives you 1m/s^2

6 0
3 years ago
Subtract. Write your answer in simplest form.<br><br> 6 3/4 - 2 3/20
kodGreya [7K]

Answer:

(6-2) (3/4-3/20)

4 ((3×20-3×4)/80)

4 48/80

4 3/5

3 0
3 years ago
Read 2 more answers
I NEED HELP RIGHT NOW PLEASE
irina [24]

Answer:

35

Step-by-step explanation:

The entire angle is 70 degrees. If it is an angle Bi (which means two) sector, then divide it by two, which becomes 35 degrees.

8 0
3 years ago
Hiro painted his room at a rate of 8 square meters per hour. After 3 hours of painting, he had 28 square meters left to paint. L
lesya692 [45]

Answer: A(t)=-8t+52

Step-by-step explanation:

<h3> The missing question is: "What is the Functions formula A(t)=?"</h3><h2 />

The  equation of the line in Slope-Intercept form is:

y=mx+b

Where "m" is the slope and "b" is the y-intercept.

According to the data given in the exercise, you know that:

- A(t) represents the area to paint the Hiros' romm as a function of time.

- The rate he painted the room was 8 square meters per hour.

- The area left to paint after 3 hours was 28 m².

Therefore, based on this, you can idenfity that:

1. The slope of the line is:

m=-8

2. One of the point on the line is:

(3,28)

So you must substitute the slope and the coordinates of that point into y=mx+b and then solve for "b" in order to find its value:

28=-8(3)+b\\\\28+24=b\\\\b=52

Therefore, you can determine that the function A(t) is:

A(t)=-8t+52

4 0
3 years ago
Which way shows how to make a ten to solve 13-7?
OverLord2011 [107]
Subtract 10 from 13 to get an answer that will subtract 7 from it

7 0
4 years ago
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