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Debora [2.8K]
2 years ago
14

The question is in the picture ​

Mathematics
2 answers:
Nesterboy [21]2 years ago
7 0

Answer:

  1. 5^2 = 25
  2. 5^{-2} = \frac{1}{25}
  3. (-5)^{2} = 25
  4. -5^{2}  =-25
sergiy2304 [10]2 years ago
5 0

Solution:

<u>We know the following rules:</u>

  • Rule: If an exponent is negative, it will be in the fraction 1/nˣ.
  • Rule: If an exponent is positive, it will be in whole number form and will multiply itself m times.
  • Rule: if a number's exponent is 0, then the number is 1.

<u>Now, let's solve each problem.</u>

  • 5² = 5 x 5 = 25
  • 5⁻² = 1²/5² = 1/25
  • (-5)² = (-5) x (-5) = 25
  • -5² = -(5²) = -(25) = -25

Learn more about exponents: <u>brainly.com/question/26553706</u>

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A cable 84 meters long is cut into two pieces so that one piece is 18 meters longer than the other. Find the length of each piec
lesantik [10]

Answer:

half of 84 is 42. Since the total difference is 18 meters you will increase one by 9m and decrease the other by 9m....therefore 42-9=33. 42+9=51

33

51

7 0
3 years ago
Read 2 more answers
Write a numerical expression to represent the phrase.<br><br> the difference of 4 cubed and 25
7nadin3 [17]

Hello!

First, "the difference" of 2 numbers means you subtract these numbers.

Then, 4 cubed is written as follows:

4³

Subtract:

4³-25

[If necessary] Evaluate:

64-25

39

Hope everything is clear.

Let me know if you have any questions!

Always remember: Knowledge is power!

3 0
2 years ago
Tom had $56. He bought a soda for $2 and 2 cookies for $3. Which expression corectly shows the total money Tom has left
frutty [35]

$56 − (−$2) + (−$3)=51

4 0
3 years ago
What is nine divided by five to the sixth power?
MariettaO [177]

nine divided by five to the sixth power is 0.000576

8 0
3 years ago
Read 2 more answers
Which set of data has the smallest difference between the mean and the median?
Andre45 [30]

Answer:

D 23, 36, 25, 38, 30

Step-by-step explanation:

Mean of a data-set:

The mean of a data-set is the sum of all it's values divided by the number of values.

Median of a data-set:

The median of a data-set is the value that separates the lower 50% from the upper 50% on the ordered set.

If the cardinality n is odd, as in this case, the median is the element at the position (n+1)/2. Since in this case, n = 5, the median is the 3rd element in the ordered set.

A 13, 42, 17, 26, 38

Ordered set: 13, 17, 26, 38, 42

Median: 26

Mean: (13+17+26+38+42)/5 = 27.2

Difference: 27.2 - 26 = 1.2

B. 28, 7, 36, 8, 17

Ordered set: 7, 8, 17, 28, 36

Median: 17

Mean: (7+8+17+28+36)/5 = 19.2

Difference: 19.2 - 17 = 2.2

C 14, 29, 38, 7, 13

Ordered set: 7, 13, 14, 29, 38

Median: 14

Mean: (7+13+14+29+38)/5 = 20.2

Difference: 20.2 - 14 = 6.2

D 23, 36, 25, 38, 30

Ordered set: 23, 25, 30, 36, 38

Median: 30

Mean: (23+25+30+36+38)/5 = 30.4

Difference: 30.4 - 30 = 0.4

Option d has the smallest difference.

6 0
3 years ago
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