HELP!! 15 POINTS Evaluate the expression when a = 4. 2a^3 A. 14 B. 24 C. 128 D. 512
2 answers:
2a^3 when a = 4:
First, to start out, our step should always be to substitute the value of the variable (a) into the problem. Below is what our new problem should look like with the value of the variable. Keep in mind that parentheses mean multiplication.
Second, our next step is to simplify 4^3. Four raised to the third power equals 64, so 4^3 = 64.
Third, this last step is quite easy. All you need to do is (2 times 64). Best to use a calculator on this or take the hard way and do long multiplication. Either way, the answer for 2 times 64 is 128.
Answer:
First, to start out, our step should always be to substitute the value of the variable (a) into the problem. Below is what our new problem should look like with the value of the variable. Keep in mind that parentheses mean multiplication.
Second, our next step is to simplify 4^3. Four raised to the third power equals 64, so 4^3 = 64.
Third, this last step is quite easy. All you need to do is (2 times 64). Best to use a calculator on this or take the hard way and do long multiplication. Either way, the answer for 2 times 64 is 128.
Answer:
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Answer:
Let X represent Nick's age and Y represent Sara's age.
Then, it is given that: Nick is four years older than Sara.
We write the statement as:
or
The only ordered pairs (X,Y) which satisfy the equation are: (0,-4) and (4,0) as you can see in the graph also.
In the graph X axis represents the age of Nick's age and Y-axis represent the age of Sara's age and the line Y=X-4 represents the relationship between the age of both.
Decrease = New number - Original Number
% Decrease =
× 100
Decrease = 9 - 12 = -3
% Decrease =
= -0.25 × 100 = -25
Your answer = -25
% Decrease =
Decrease = 9 - 12 = -3
% Decrease =
Your answer = -25