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ratelena [41]
3 years ago
11

Please show work for it.

Mathematics
1 answer:
Komok [63]3 years ago
8 0

Answer:

7over9 or -7over9

Step-by-step explanation:

81x power 2 - 8 = 41

(left side) (right side)

first we let the 8 from left side go to the right side,so it will be +8:

81x power 2 = 41+ 8

=49

so now we let the 81 from left side go to right side, so it will be ÷81:

x power 2= 49 over 81

and now we let the power 2 (square) go to the other side so it will become square root:

x = + - √49 over 81

at the end, you will get 2 answers which is 7 over 9 and - 7 over 9

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This helicopter has a rotor that moves at a rate of 600 spins per minute while flying. Which statement is supported by this info
jeka57 [31]

Answer: d. The helicopter rotor will spin 36,000 times in 1 hour

Step-by-step explanation:

Option A is wrong because in 40 minutes the rotor will spin:

= 40 * 600

= 24,000 times

Option B is wrong because we cannot know the number of times the rotor will spin before being lifted off of the ground with the details given.

Option C is wrong because in 3 hours the rotor will spin:

= 600 * 3 * 60 minutes

= 108,000 times

Option D is correct because in 1 hour the rotor will spin:

= 600 * 1 * 60 mins

= 36,000 times

5 0
3 years ago
Given the points A(-1, -2), B(-1, 2) and C(6,0), use the distance formula to
bazaltina [42]
Answer:

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Step-by-step explanation:

A triangle that contains 2 equal sides but one side different

7 0
2 years ago
Help i hill give brainliest
lina2011 [118]

Answer:

530.66 cm²

Step-by-step explanation:

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8 0
2 years ago
24 written as a percentage
Yanka [14]
Any number is equal to that number over 1

So x is equal to x/1

Same thing with 24. 24 = 24/1

To get it into percent we multiply by 100 so:

\sf{\frac{24}{1}=\frac{24\times100}{1\times100}}

And simplifying that we get

\sf{\frac{2400}{100}}

And x/100 = x%

so 2400/100 = 2400% 

So your answer is <em><u>2400%</u></em> :)
5 0
3 years ago
Which is bigger 3/11 or 3/12​
mr_godi [17]

Answer:

3/11

Step-by-step explanation:pls mark me brainliest

7 0
2 years ago
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