The complete question in the attached figure
we know that
in the triangle BDC
cos alfa=3/y----------> equation 1
sin alfa=x/y----------> equation 2
in the triangle ABD
cos alfa=4/5--------> equation 3
sin alfa=3/5---------> equation 4
then
Equal equation 1 and 3
3/y=4/5---------> y/3=5/4----------> y=15/4
Equal equation 2 and 4
x/y=3/5-------> x=3*y/5------------> 3*15/(4*5)-----> x=9/4
the answer is
<span>x=9/4 y=15/4</span>


USE CALCULATOR -_-

<em><u>STAN </u></em><em><u>TREASURE</u></em>
Answer:
Your signature, and a nice 4-word goodbye
Step-by-step explanation:
Your signature so they know it was YOU who wrote it and a nice 4-word goodbye to show the other person that you care.
Answer: 6
Step-by-step explanation:
There are 6 different combinations of choices for the date:
- Thai food, movie
- Thai food, ice skating
- Thai food, art museum
- Italian food, movie
- Italian food, ice skating
- Italian food, art museum
An easier way to solve for this is multiply by how many choices are in each category.
In food there is 2 choices, in activities there is 3 choices
Therefore: 2 x 3 = 6
Answer:
20 miles
Step-by-step explanation:
d miles × (1 h)/(10 miles) = d/10 hours
d miles × (1 h)/(40 miles) = d/40 hours
d/40 = d/10 - 3/2
d = 4d - 60
d = 20 miles