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inessss [21]
3 years ago
14

HELP!!! Use the properties of exponents to simplify the expression:

Mathematics
1 answer:
Dvinal [7]3 years ago
6 0
There you go the answer key

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Two square rooms have a total floor of 89m^2.one room is 3m longer each way than the other,find the dimensions of the rooms
Katen [24]
Thank you for posting your question here at brainly. Below is the solution. I hope the answer will help you.

<span> x ( x+4) = 45 </span>

<span>5m X 5m AND 8m X 8m 
</span>
5) x ( x+6) = 135 

<span>x^2 +6x -135 = 0 </span>

<span>( x-9) ( x+15) = 0 </span>

<span>x = 9 </span>

<span>ANSWER 9 & 15</span>

8 0
2 years ago
Read 2 more answers
What is the value of n in the equation below?
11Alexandr11 [23.1K]

Answer:

3?

Step-by-step explanation:

im not 100% sure

5 0
3 years ago
Read 2 more answers
Fission tracks are trails found in uranium-bearing minerals, left by fragments released during fission events. An article report
Harlamova29_29 [7]

Answer:

Mean track length for this rock specimen is between 10.463 and 13.537

Step-by-step explanation:

99% confidence interval for the mean track length for rock specimen can be calculated using the formula:

M±\frac{t*s}{\sqrt{N}} where

  • M is the average track length (12 μm) in the report
  • t is the two tailed t-score in 99% confidence interval (2.977)
  • s is the standard deviation of track lengths in the report (2 μm)
  • N is the total number of tracks (15)

putting these numbers in the formula, we get confidence interval in 99% confidence as:

12±\frac{2.977*2}{\sqrt{15}} =12±1.537

Therefore, mean track length for this rock specimen is between 10.463 and 13.537

4 0
3 years ago
Passes through (-4, 11) and (2,8)
g100num [7]

Are you looking for slope?

if u r the slope is -6/3

7 0
3 years ago
Simplify the given expression below:
ira [324]
The answer is A. -2+5i.

First you set up the problem like this: (6+2i)-(8-3i)
Then you distribute the (-) into the second parenthesis. After doing that you should have something that looks like this: 6+2i-8+3i
Then you add like terms.
6 0
2 years ago
Read 2 more answers
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