Answer:
it is 4th one
Step-by-step explanation:
Let b be the speed of the boat; and c be the speed of the current. Then:
5b-5c=130
5b+5c=220
10b=350
b=35
c=9
☺☺☺☺
Find the difference between prices: 4.86-4.50=.36
Divide the difference (.36) by the original price: .36/4.50=.08
Change to a percentage: 8%
The sales tax is 8% :)
Answer:
39 degrees
Step-by-step explanation:
- by seeing the diagram in the attachment, we can see that the angles UWV and VWX are on straight line or, their sum makes 180 degrees.
- we also know that sum of the angles in a triangle is 180 degrees.
by using the first statement,
UWV + VWX = 180
UWV + 6x-3 = 180
UWV = 180+3-6x
= 183-6x
by using second statement,
UWV+WVU+VUW=180
substituting the values,
183-6x+2x+5+x+13=180
201-3x=180
substracting 180 from both sides,
21=3x
dividing both the sides by 3,
7=x
the angle VWX=6x-3
substituting 7=x,
VWX=6(7)-3= 39.