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Varvara68 [4.7K]
3 years ago
7

Can someone help me Please

Mathematics
1 answer:
alisha [4.7K]3 years ago
3 0
Jane:  Think:  the hypotenuse of her ramp is 14 inches and the angle opposite the rise is 30 degrees.  Thus, cos 30 deg = (adj side) / (hyp) = (adj side) / (14 in).

Solving for (adj side), we get   (adj side) = (14 in)(sqrt(3)/2) = 7 sqrt(3) inches.
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What is 2X to the power of 3 divided by -8X to the power of 4?
PIT_PIT [208]

Answer: 8 = 23 (-8)4 = (23)4 = 212

1/(2048x)

Step-by-step explanation:Negative number raised to an even power is positive

For example let's look at (-7)6 , where (-7) , a negative number, is raised to 6 , an even exponent :

(-7)6 can be written as (-7)•(-7)•(-7)•(-7)•(-7)•(-7)

Now, using the rule that says minus times minus is plus, (-7)6 can be written as (49)•(49)•(49) which in turn can be written as (7)•(7)•(7)•(7)•(7)•(7) or 76 which is positive.

We proved that (-7)6 is equal to (7)6 which is a positive number

Using the same arguments as above, replacing (-7) by any negative number, and replacing the exponent 6 by any even exponent, we proved which had to be proved

Dividing exponential expressions :  x3 divided by x4 = x(3 - 4) = x(-1) = 1/x1 = 1/x

Final result :

1/2048x

im in middle school

6 0
2 years ago
wind and weather patterns are caused when warm air near the surface of the earth rises to higher levels in the atmosphere the ai
wolverine [178]
 I believe that is convection
6 0
3 years ago
The temperature outside dropped 13 degrees in 7 hours.The final temperature was -2 degrees.What was the starting temperature
sp2606 [1]

Answer:

11 degrees

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7 0
2 years ago
Dennis drew the rectangle on grid paper. What is the perimeter of the rectangle dennis drew.
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(2l+2w) is that right

7 0
3 years ago
The number 2 is chosen to begin a ladder diagram to find the prime factorization of 66. what other numbers could have been used
Citrus2011 [14]
By changing the number for your prime factorization, you also have a different diagram.

Prime factorization for 66
        
                 66
                  /\
                2*33
                     /\
                    3*11

Even if we change the prime factorization order, we still have the same numbers.

66 = 2 * 3 * 11

5 0
3 years ago
Read 2 more answers
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