Answer:
16
Step-by-step explanation:
To solve this equation, we need the formula for perfect squares:
or
<em>this is the formula we will use because the signs match the one in the question</em>.
Knowing these, we can set up an equation that assumes that the answer we will end up with is a perfect square.
Work:
- this is the setup for being able to solve for the unknown
, now we need to solve for .
(I replaced 
with 
because I'm setting up this question to be a perfect square).
- multiply the left side. Remember that your answer will not be
, but 
.
- Divide like terms and isolate the variable. In this case,
and 
are on both sides, so dive them and they will be canceled out.
- divide by
and you will have your value for .
- Now we plug into our original equation equation for perfect squares.
Our final answer is 16.
Answer:
[-2; 1 ] is the new column vector
Step-by-step explanation:
See explanation in the attachment.
Answer:
Salaries for computer technicians at Company A vary more than salaries at Company B.
Step-by-step explanation:
The reason why salaries for computer technicians at Company A vary more than salaries at Company B.
Range of Company A = $63,000 − $41,000 = $22,000; Range of Company B = $65,000 − $45,000 = $20,000. → $22,000 > $20,000
The answer is 92% of states have an interstate highway.
Before 1901 Australia was ruled by the
