Answer:
well the first one is x^3 y^2 z 7root x^2 z
Since it is 40% OF 45 you have the whole and percent so multiply 45 by 40 then divide by 100 you get 18
Answer:
5q+9
Step-by-step explanation:
6q minus a is 5 q so then it would equal 5q+9
which is 4+5 equals 9
Answer:
The answer is 2.4 Miles per hour
Step-by-step explanation:
15.12 divided by 6.3= 2.4 MPH
Answer:
(√6)/2 square units
Step-by-step explanation:
The area of a triangle is half the magnitude of the cross product of the vectors representing adjacent sides.
QR = (4-3, -1-(-4), -4-(-5)) = (1, 3, 1)
QS = (3 -3, -5-(-4), -6-(-5)) = (0, -1, -1)
The cross product is the determinant ...

The magnitude of this is ...
|QR × QS| = √((-2)² +1² +(-1)²) = √6
The area of the triangle is half this value:
Area = (1/2)√6 . . . . square units