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Likurg_2 [28]
3 years ago
13

If y = x3 - 3 , find the value of y when x = -2

Mathematics
1 answer:
Contact [7]3 years ago
8 0
Y = (-2)3 - 3
Y = -6 - 3
Y= -9
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A ball is dropped from a height of 180 meters. The height of the ball can be represented by
Alex Ar [27]
I think it is C but it also could be B as well
6 0
3 years ago
*!HELP!* Mark wants to order a pizza. Drag and drop the correct number or phrase into each box to complete the explanation for w
fredd [130]

Answer:

A. 0.08 B. 0.09 and C. 12-inch hopefully im right

8 0
2 years ago
Alexander deposited money into his retirement account that is compounded annually at an interest rate of 7%.
anzhelika [568]
Tow rates are equivalent if tow initial investments over a the same time, produce the same final value using different interest rates.

For the annually rate we have that:
V_{0} =(1+ i_{a} ) ^{1}
Where
V_{0} = initial investment.
i_{a} = annually interest rate in decimal form.
And the exponent (1) represents the full year.

For the quarterly interest rate we have that:
V_{0} =(1+ i_{q} ) ^{4}
Where
V_{0} = initial investment.
i_{q} = quarterly interest rate in decimal form.
And the exponent (4) the 4 quarters in the full year.

Since the rates are equivalent if tow initial investments over a the same time, produce the same final value, then
(1+ i_{a} )=(1+ i_{q} ) ^{4}
Notice that we are not using the initial investment V_{0} since they are the same.

The first thin we are going to to calculate the equivalent quarterly rate of the 7% annually rate is converting 7% to decimal form
7%/100 = 0.07
Now, we can replace the value in our equation to get:
(1+0.07)=(1+ i_{q} ) ^{4}
1.07=(1+ i_{q} ) ^{4}
\sqrt[4]{1.07} =1+ i_{q}
 i_{q} = \sqrt[4]{1.07} -1
i_{q} =0.017
Finally, we multiply the quarterly interest rate in decimal form by 100% to get:
(0.017)(100%) = 1.7%
We can conclude that Alexander is wrong, the equivalent quarterly rate of an annually rate of 7% is 1.7% and not 2%.


6 0
3 years ago
Increase £60 by 120%
zimovet [89]
60×120=7200
7200÷100=72
60+72=132

answer=£132
hope this helps.....
3 0
3 years ago
Photo attached. Thanks in advance!
jonny [76]
A zero in front of the x would make this a difference of two perfect squares. All of the other option would interfere by adding another term.
7 0
3 years ago
Read 2 more answers
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