3-5 is equal to -2 (hope this helps you) :)
A(x - b) - 2k = l
ax - ab - 2k = l
Subtract ax, add ab to both sides
- 2k = l - ax + ab
Divide by - 2 to isolate variable K
k = (l - ax + ab) / - 2 or
Answer:
x = ±i sqrt(3/2)
Step-by-step explanation:
2x^2+7 = 4
Subtract 7 from each side
2x^2+7-7 = 4-7
2x^2 = -3
Divide by 2 on each side
2x^2/2 = -3/2
x^2 = -3/2
There is no real solution, only imaginary solutions
Taking the square root of each side
sqrt(x^2) = sqrt(-3/2)
x = ±i sqrt(3/2)
V = length x width
5 x 8 = 40
3 x 4 = 12
40 + 12 = 52 (answer for #3)
4 x 6 = 24
14 - 6 = 8
8 x 9 = 72
24 + 72 = 96 (answer for #4)
7 x 6 = 42
3+6+3 = 12
5 x 12 = 60
60 + 42 = 102 (answer for #5)
Answer:
4
Step-by-step explanation:
im assuming x is the top side of the trapezium because there is no picture provided.
the formula for area of trapezium is:
height x (base + (difference of the base and the topside/2))
so we would do the inverse of this:
22/4 = 5.5
7-5.5 = 1.5
1.5x2 = 3
7-3 = 4
x = 4
