Answer:
IJ
Step-by-step explanation:
The point halfway between the two cities would be the midpoint, which is found by averaging the x and y coordinates. In this case the point would be ((3+7)/2, (4+1)/2) = (5, 2.5). The distance between the stadium and the high school can be found using the distance formula and then multiplying by 10.9 miles. That would get us 10.9sqrt((7-3)^2+(4-1)^2) = 54.5 miles if I did that mental math right.
Answer:
−15+8i
Explanation:
First, you can expand the square of the bynomial:
(1+4i)2=1+8i+16i2
Since
i2=−1
the given expression becomes:
1+8i−16=−15+8i
Answer:
12x + 16y
Step-by-step explanation:
Multiply 4 and 3x to get 12x.
Multiply 4 and 4y to get 16y.
The sign stays positive because 4 is positive, so we end up with 12x + 16y.
The answer is c. a selection of 80 students in the school
