If a is equal to 7. The answer is 11. 7+4
Let L = length, W = width, and formula for perimeter (each side added) is
P = 2L + 2W
The first statement tells us L = 3W so we can substitute 3W for L in the formula.
P = 2(3W) + 2W
The 2nd statement tells us to make the expression for the perimeter into an inequality where it is ≥ (greater than or equal to) 104
2(3W) + 2W ≥ 104
We only need to solve this to find the possible values for W/
2(3W) + 2W ≥ 104
8W ≥ 104 ← result of simplifying left side
W ≥ 13 ← result of dividing both sides by 8
ANSWER: The width is greater than or equal to 13: W ≥ 13
3π/4 angle is in the second quadrant, so cos (3π/4) is going to be negative.
Reference angle of 3π/4 is (π - 3π/4) = π/4
cos(π/4) = √2/2
cos (3π/4) = - √2/2
Answer is C.
It’s D)115 because every straight line has to be 180
