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blondinia [14]
4 years ago
11

Helppppppppppppppppp

Mathematics
2 answers:
Bess [88]4 years ago
8 0
First we rewrite the expression:
 (5 ^ -1) * (5 ^ -3)
 Using properties of exponents we have:
 (1/5) * (1 / (5 ^ 3))
 Rewriting:
 (1/5) * (1 / (125))
 1/625
 answer:
 An equivalent expression is:
 1/625
 option 1
Colt1911 [192]4 years ago
7 0
The answer is A :) 1/625
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A bike that you really want is on sale of 15% off... If it is normally $83.99, how much would it now that it is on sale?
Mama L [17]
100%-15%=85% =.85(83.99)=$71.39
4 0
3 years ago
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Simplify the next two expressions
prisoha [69]
1. 7x-40
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4 years ago
Write the point-slope form of the equation of the line that passes through the points (-3, 5) and (-1, 4). Include your work in
slava [35]

Answer:

y-5=-1/2(x+3)

Step-by-step explanation:

m=(y2-y1)/(x2-x1)

m=(4-5)/(-1-(-3))

m=-1/(-1+3)

m=-1/2

y-y1=m(x-x1)

y-5=-1/2(x-(-3))

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5 0
4 years ago
Avery guessed that the typical number of sit-ups her classmates could do was 30 in 1 minute. Avery tested this idea by recording
VashaNatasha [74]

Answer:

1. What is the most common number of sit-ups completed in 1 minute? Explain how you used the dot plot to identify this number.

A: On the chart the number 38 has the most plotted dots.

2. What is the spread of this data set

A: 34 - 42

3. According to this data set, is Avery's guess of 30 sit-ups per minute too low, too high, or about right? Explain.

A: 30 is a little too low, the lowest count on the chart is 34, and Avery's estimate was 30, meaning its too low.

- Kayla <3

7 0
3 years ago
Mary is solving the equation 2n – 3 = 83. Her first three steps are shown:
Stells [14]
Thank you for posting your question here at brainly. I hope the answer will help you. Feel free to ask more questions.
2^n - 3 = 83 
<span>2^n = 86 </span>
<span>ln(2^n) = ln(86) </span>
<span>n*ln(2) = ln(86) </span>
<span>n= ln(86)/[ln(2)] (which is the same as "log base 2 of 86") </span>
<span>n= 6.426264755</span>

7 0
3 years ago
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