Answer 38.6
Step-by-step explanation:
21 x .84 = 17.64
17.64 + 21 = 38.64
Answer:
they form a 90 degree angle
Step-by-step explanation:
perpendicular (⊥) always implies 90 degree angles
parallel (║) always implies they never intersect
Starting from the formula

We can divide all the angles by 2 and we get

And finally

Angle x is a third quadrant angle, meaning that it is somewhere between 180 and 270. This implies that x/2 lies between 90 and 135. So, x/2 is a second quadrant angle, and its cosine is negative. This means that we can update the previous equation to

You know that

so, plug that value into the expression and you'll get cos(x/2).
7.63636364 so basically 7.63 repeating
Answer:
1- 3/20
2- 12
Step-by-step explanation:
Given that Lenox ironed 1/4 of the shirts over the weekend, and she plans to split the remainder of the work equally over the next 5 evenings, to determine what fraction of the shirts will Lenox iron each day after school, and, if lenox has 40 shirts, how many shirts will she need to go on Thursday and Friday, the following calculations must be performed:
1---
(3/4) / 5 = X
0.15 = X
15/100 = X
3/20 = X
So each day she will iron 3/20 of her shirts.
2---
40 x (3/20) x 2 = X
6 x 2 = X
12 = X
So on Thursday and Friday she will iron 12 shirts.