Width = W
Length = 2 times the width plus 3 feet = 2W + 3
Area of triangle A = L * W
A = W (2W + 3)
20 = 2W^2 + 3W
2W^2 + 3W - 20 = 0
(W + 4) (2W - 5) = 0
W + 4 = 0; W = - 4 (width cannot be negative, excluded)
2W - 5 = 0
2W = 5
W = 2.5
L = 2W + 3 = 2(2.5) + 3 = 8
Answer:
Width = 2.5 feet and Length = 8 feet
Hope it helps.
You need to use the cosine for this and this is how you do it.
Solve the second equation for y so that you can substitute it in for y in the first equation..
y = 5x - 4
Substitute:
3x + (5x - 4) = 1
Step-by-step explanation:
We need to say that 
is equivalent to what.
We know that, (3)² = 9
So,
We can write 
And 
So,
So, is equivalent to 
.
Hence, this is the required solution.
Answer:
7.4
Step-by-step explanation:
just divide it by 3.2
