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adoni [48]
3 years ago
14

Simplify (4/5)^-2 . Show your work!

Mathematics
1 answer:
jarptica [38.1K]3 years ago
5 0

Answer:

\frac{25}{16}

Step-by-step explanation:

Apply exponent rule: x^{-y}=\frac{1}{x^y}

(\frac{4}{5}) ^{-2}=\frac{1}{\left(\frac{4}{5}\right)^2}=\frac{1}{\frac{16}{25}}=\frac{25}{16}

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Order these three values from least to greatest. Explain or show your reasoning.
enot [183]

The correct answer is 82% of 50 (41) / 170% of 30 (51) /65% of 80 (52)

Explanation:

The first step to know whether a value is greater than another is to find the value each percentage represents depending on the total. This process is shown below.

1. 65% of 80- This implies 80 is 100% and 85% needs to be found. Use the following formula:

80 / 100 = 0.8 x 65 = 52 or the total number divided by 100 and multiplied by the percentage you want to know

2. 82% of 50 - Repeat the same process

50 / 100 = 0.5 x 82 = 41

3. 170% of 30

30 / 100 = 0.3 x 170 = 51

4. Finally organize the values

82% of 50 (41)

170% of 30 (51)

65% of 80 (52)

8 0
3 years ago
Read 2 more answers
4 divided by the sum of 2 and 12
azamat

Answer:

Step-by-step explanation:

4/(2+12)

=4/14

=2/7

=0.2857

5 0
3 years ago
Read 2 more answers
Robert packed 1,320 cookies into packets of 22 each. He sold all the cookies at $2 per packet. How much money did he make?
cestrela7 [59]
He made $120.
You divide 1,320 by 22. That gives you 60. Then you times 60 by 2(which equals 120) because 60 represents the packets and he made 2 dollars per packet.
Mathematically the steps look like this: 
1,320/22
=60 
60(2) or 60 x 2
= 120 
so $120 
hope this helped!
8 0
4 years ago
Read 2 more answers
Fast please i need it right now
Art [367]

Answer:

C

Step-by-step explanation: Because the second plot mark is at (.5, 27.5). you should just be able to divide 27.5/.5= 55 which is less than 60mph

4 0
4 years ago
Need help ASAP pls giving out extra pints for every question
kramer

1.

43.85 + 2(2.70) + 2(-1.10) - 4.45

43.85 + 5.40 - 2.20 - 4.45

$42.60

2.

1.40(15) = 21

$21

3.

15(3) + 3(9) + 7

45 + 27 + 7 = 79

$79

4.

15 - 45 / 9

15 - 5

10

5.

0.75(79.99)

$59.9925 (can be rounded to just $59.99)

5 0
4 years ago
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