Answer:
y = 16
Step-by-step explanation:
4-3 is 1 also known as y
therfor y = 16
Set up a proportion.
10/5=x/7
5x = 70
x = 14
Answer: Find the value of X in triangles by subtracting known angle measurements from 180 degrees. Since the value of all angles within a triangle must equal 180 degrees, if you know at least two angles, you can subtract them from 180 to find the missing third angle
Step-by-step explanation:
Try this option:
1. rule: cosα=sin(90°-α), it means that cos 3x=sin(90°-3x);
2. sin(90°-3x)=sin(x+18°); ⇔ 90°-3x=18°+x; ⇔ x=18°.
Answer: x=18°.
Answer:
The extra fee was 1.31
It brought her total up to 44.96
