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Deffense [45]
3 years ago
12

How are negative exponents and positive exponents related?

Mathematics
1 answer:
Stolb23 [73]3 years ago
7 0

You can make a negative exponent positive by switching its numerator with its denominator and vice versa.

Examples:

x^{-2} = \frac{1}{x^2}

3x^{-2} = \frac{3}{x^2}

(3x)^{-2} = \frac{1}{(3x)^2}

\frac{1}{x^{-2}} = x^2

\frac{1}{3x^{-2}} = \frac{x^2}{3}

\frac{1}{(3x)^{-2}} = \frac{(3x)^2}{1} = (3x)^2

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Jason and Britton are driving to St. George. Jason got a 20 mile head start and drove an
harina [27]

Answer:

  2 hours, 150 miles

Step-by-step explanation:

The relation between time, speed, and distance can be used to solve this problem. It can work well to consider just the distance between the drivers, and the speed at which that is changing.

<h3>Separation distance</h3>

Jason got a head start of 20 miles, so that is the initial separation between the two drivers.

<h3>Closure speed</h3>

Jason is driving 10 mph faster than Britton, so is closing the initial separation gap at that rate.

<h3>Closure time</h3>

The relevant relation is ...

  time = distance/speed

Then the time it takes to reduce the separation distance to zero is ...

  closure time = separation distance / closure speed = 20 mi / (10 mi/h)

  closure time = 2 h

Britton will catch up to Jason after 2 hours. In that time, Britton will have driven (2 h)(75 mi/h) = 150 miles.

__

<em>Additional comment</em>

The attached graph shows the distance driven as a function of time from when Britton started. The distances will be equal after 2 hours, meaning the drivers are in the same place, 150 miles from their starting spot.

3 0
1 year ago
Click on the words to go to the picture
Goshia [24]
The Answer is B because the volume is 7*5*14, divide that by 5, 1 fifth = 98, this means 98 times 2 is the volume of white.

5 0
2 years ago
A square garden has an area of 12.25 square meters what is the perimeter of the garden?
serg [7]
Area of square= s^2
12.25=s^2
take the sqrt(12.25) = 3.5
Perimeter of square = 4s
P=4(3.5)
P= 14 m
3 0
3 years ago
Pls help me plssss. Bella measured the heights of her corn stalks in centimeters. The heights are 81, 88, 69,65, 87.
astra-53 [7]

Hullo!

Your answer is C! Or 78 cm!!

Hopefully this helps! :D

7 0
3 years ago
Read 2 more answers
What is the answer and how do I get it
lora16 [44]
Hope this helps you!!!

4 0
3 years ago
Read 2 more answers
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