27 is B. 11.2 and I think 28 is A. scalene
Answer:
mulltiply
Step-by-step explanation: you mulitply all
Answer:
Step-by-step explanation:
Using the given expressions, we can write the area as ...
A = BH
42 = (2x +1)(x +3) = 2x^2 +7x +3
2x ^2 +7x -39 = 0
(x -3)(2x +13) = 0
x = 3 or -6.5 . . . . . these values make the factors be zero
In order for the parallelogram to have positive dimensions, the value of x must be 3. So, the base and height are ...
base = 2(3) +1 = 7
height = 3 +3 = 6
Answer:
10
Step-by-step explanation:
10x²-14x+k = 0
x1 = sin a
x2= cos a
x1+x2 ≤ 2
x1. x2 ≤ 1 => k/10 ≤ 1
k ≤ 10
so the value of k should be 10
Assuming this is a cylinder, surface area (using the formula) = 2πrh+2π(r^2)
r = diameter/2 = 4
h = height = 9
surface area becomes
2π*4*9 + 2π(4^2)
= 326.73