(-2+8i)x(3-10i)
-2 x 3 - 2 x (-10i) +8i x 3- 8i x 10i
-6+20i+24i - 80i ^2
-6+20i+24i - 80 x (-1)
-6+20i+24i + 80
Answer: 74+44i
Answer:
Step-by-step explanation:
Given
Shape: Opening of a circular vase
Required
Determine the area
This opening implies a circle; hence the area will be calculated using area of a circle.
Solve for radius (r)
Substitute 6.75 for r in
--- Approximated
By creating two right triangles (one for depression and one for elevation) and by using 700 as the adjacent side, you can use tangents to find the opposite sides and add them together.
Tan(45) = opposite side/700 or 700tan(45) = opposite side (elevation).
This of course equals 700.
Then do the same for the depression.
Tan(32) = opposite side/700 or 700tan(32) = opposite side (elevation).
Which equals 437.4.
Adding the two together and you get the height of the cell tower at 1137.4ft
We need to use simple division to solve the problem. The number of students in the painting class this month is 14.
It is said that each student pays $12 for class and $28 for materials. The total amount paid by each student can be calculated by adding both of them. We know that the total amount this month is $560, we need to find the number of students in the class. Let us consider the number of students in the class to be x, and multiply the total amount per student to x and equate it to 560.
(12+28)x=560
40x=560
x=560/40=14
Therefore the number of students in the painting class is 14.
Learn more about division here:
brainly.com/question/25289437
#SPJ4
Answer:
2+2+2+2=8-3=5
Step-by-step explanation:
so what about This
