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FrozenT [24]
3 years ago
6

Plz ASAP Which expression is equivalent to -8

Mathematics
1 answer:
Free_Kalibri [48]3 years ago
8 0

Answer:

Option "B" is the correct answer to the following question.

Step-by-step explanation:

(\frac{-1}{2} )^{-3}

-2\times -2\times -2

(\frac{1}{a} )^{-m}= a^m

So,

(\frac{-1}{2} )^{-3} = (-2)^3\\\\(-2)^3 = -2\times -2\times -2\\\\ -2\times -2\times -2=-8

Therefore, Option "B" is the correct answer

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balu736 [363]
The answer to this should be 101!
7 0
2 years ago
The number of orders received daily by an online vendor of used CDs is normally distributed with mean 270 and standard deviation
frez [133]

Answer:

Step-by-step explanation:

Given that the number of orders received daily by an online vendor of used CDs (say X) is normally distributed with mean 270 and standard deviation 16.

X is N(270, 16)

To find percentage of days will the company have to hire extra help or pay​ overtime, we can find probability using std normal table

X>302 means

Z>\frac{302-270}{16} =2

P(Z>2) = 0.25

Thus 25% of days will the company have to hire extra help or pay​ overtime

4 0
3 years ago
A team won 40 of its first 50 games. How many of the remaining 40 games must this team win so it will have won exactly 70% of it
tensa zangetsu [6.8K]

Answer:30

Step-by-step explanation:

6 0
3 years ago
One side of a right triangle has a length of 24 centimeters. What could be the lengths of the other two sides of the right trian
Zanzabum

Answer:

A. 7 centimetres and 25 centimetres

Step-by-step explanation:

To see if the lengths make a triangle, use the Pythagorean theorem. Insert the biggest value as c (the hypotenuse, which is always the longest side in a right triangle). If both sides equal each other, it is a right triangle:

a^2+b^2=c^2

A.

24^2+7^2=25^2\\\\576+49=625\\\\625=625

This is a right triangle.

B.

23^2+8^2=24^2\\\\529+64=576\\\\593\neq 576

Not a right triangle.

C.

9^2+22^2=24^2\\\\81+484=576\\\\565\neq 576

Not a right triangle.

D.

24^2+10^2=27^2\\\\576+100=729\\\\676\neq 729

Not a right triangle.

Done :D

5 0
3 years ago
Directions: Evaluate each rational expression using the indicated values of the variable.
xeze [42]

Answer:

1) \:  \:  \frac{5x}{2y}  \\ a) \:  \: x = 8  \:  \: and \:  \: y = 10 \\  \frac{5x}{2y}  \\  \frac{5(8)}{2(10)}  \\  \frac{40}{20}  \\ 2 \: ans \\  b) \:  \:  \frac{5x}{2y}  \\  \frac{5( \frac{1}{2}) }{2( \frac{2}{3}) }  \\  \frac{2.5}{1.3}  \\  \frac{25}{13}  \\ 1.92 \:  \: ans \:  \\  \\ 2) \:  \:  \frac{a {b}^{3} }{c}  \\  \\ a) \:  \: a = 4 \:  .\: b = 3 \: . \: c = 2 \\  \\  \frac{a {b}^{3} }{c}  \\  \frac{(4) {(3)}^{3} }{2}  \\  \frac{4(27)}{2}  \\  \frac{108}{2}  \\ 54 \:  \: ans \:  \\  \\ b) \:  \: a =  - 2 \: . \: b =  - 2 \: . \: c = 2 \\  \\  \frac{a {b}^{3} }{c}  \\  \frac{( - 2) {( - 2)}^{3} }{2}  \\  \frac{ - 2 { (- 2)}^{3} }{2}  \\  \frac{ - 2( - 8)}{2}  \\  \frac{16}{2}  \\ 8 \:  \: ans \:

Step-by-step explanation:

question 3 is already answered by me in your question..or you can see attachment.

3 0
2 years ago
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