Answer:
AD = 10
Step-by-step explanation:
It's given that ABCE is a rectangle.
Therefore, measure of opposite sides of the rectangle will be equal.
AB = EC
AB = ED + DC
12 = ED + 4
ED = 8
Measure of side AE = 6
Since, measure of interior angles of a rectangle = 90°
Therefore, ΔEAD will be a right triangle.
By Pythagoras theorem,
AD² = AE² + ED²
= 6² + 8²
AD = 
= 
= 10
Therefore, measure of side AD = 10 units
Answer:
88 in²
Step-by-step explanation:
i hope i helped
12x+2y=112
6x+y=56
6x=56-y
x=(56-y)/6
y=(56-6x)
Answer:
2 hr and 58 min
Step-by-step explanation:
Let y= mx-2 be the tangent line to y=x^2-4x+2 at x=a.
Then slope, 
Hence the equation is y=(2a-4)x-2
Let's find y-coordinate at x=a using tangent line and curve.
Using tangent line y at x=a is (2a-4) a -2 
Using given curve y-coordinate at x=a is 
Let's equate these 2 y-coordinates,
a=2 or -2.
If a=2, 
If a=-2,
Hence m values are 0 and -8.
