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Alex
3 years ago
10

Please help me understand how to do this

Mathematics
2 answers:
MrRa [10]3 years ago
6 0
Whenever you have something to the negative power, it will result in a fraction. So, if you have seven to the second power, it would be 49, and then you turn that into a fraction, which would be 1/49.
CaHeK987 [17]3 years ago
4 0

Answer:

D

Step-by-step explanation:

Since the exponent 2 is negative, you will need to make it positive first. In order to do so, you can put 7^2 in the denominator. (If the original question was 1/7^-2 you could put 7^2 in the numerator to cancel out the negative). By doing this, the negative is removed and you are able to answer the question as 1/7^2 . The answer would then be D, since 7^2 is 49, but you put the number in the denominator because of the negative exponent.


I hope this makes sense!


(also: I am not exactly positive as to what standard form would be with just one number and an exponent, so I answered this as I have learned in my math classes.)

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The area of a rectangular garden is 3927cm . If the width of the garden is 51 m , what is its length?
Galina-37 [17]

Answer:

77

Step-by-step explanation:

The area of a rectangle is A = lw. 'A', the area, is 3927, and 'w', the width, is 51. By substituting the values in, we get that 3927 = 51L. Dividing both sides by 51, we get that L, the length, is 77.

6 0
3 years ago
An acute triangle has two sides measuring 8 cm and 10 cm. What is the best representation of the possible range of values for th
Lunna [17]

Answer:

Step-by-step explanation:

Method

The smallest the third side can be is something just larger than 2

You get 2 by subtracting10 and 8. The third side is just a bit larger. 8 and 2 will make up the length of 10 so you cannot use 2 itself

The largest value possible is just under 18. You get 18 by adding 8 and 10 together. So to get a triangle, you need just under 18.

Answer

2<s<18

A

6 0
2 years ago
Toni can carry up to 22lb in her backpack,her lunch weighs 1 lb,her gym clothes weighs 3lb and her books (b) 3lb each.how many b
Nadusha1986 [10]
The answer is 6 books
8 0
4 years ago
Simplify the expression show all of your work 3+5 squared -9÷3×4= Please help
dexar [7]

Answer:

Step-by-step explanation:

<em>(5√3*√3)+(5√3*5)+(-1*√3)+(-1*5) </em>

<em>5*3+25√3-√3-5 </em>

<em>15+24√3-5 </em>

<em>**24√3+10** </em>

<em></em>

<em>Then to solve the second, apply division rules within the radical. This means you can cancel an m^1 and n^4 from the bottom and top of the fraction. This leaves... </em>

<em>3√(88m^19*n^8) </em>

<em>(That might be all you need to do, otherwise you can take the square root of each number in the term giving... </em>

<em>3(√88)*m^9.5*n^4)</em>

<em></em>

<em>Hope I made it clear enough</em>

<em></em>

<em>Please give me Brainliest</em>

7 0
4 years ago
Read 2 more answers
Susan, Deon, and Goran have a total of $153 in their wallets. Goran has 4 times what Deon has. Deon has $9 less than Susan. How
yaroslaw [1]

Answer:

$153

Step-by-step explanation:

6 0
4 years ago
Read 2 more answers
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