He uses sin(x):
sinx = opposite side/hypotenuse = y/ (distance eath-sun)
Since x is known and y is known, then:
Distance earth-sun = y/sinx
You're answer will be 20x+y-3 because you can distribute 4x to 5x and when you do that, you multiply. But you can't distribute 4x to y or -3, so you leave them alone.
Answer: -15/56
Step-by-step explanation:
8*10= 80
You now know how many Jerome has.
3*10= 30
That is how many his sister has.
80-30= 50
Jerome has 50 cards left.
I hope this helps!
~kaikers
Answer:
CHILDREN= 389
ADULT=310
Step-by-step explanation:
1) A + C = 710 2) A*2.50 + C*1.2 = 1288.75
OR, A= 710-C (710-C)*2.50 + C*1.2=1288.75
1775-2.50*C+1.25*C=1288.75
1775 -1.25*C = 1288.75
-1.25*C=1288.75-1775
1.25*C=486.25
C = 486.25/1.25
C = 389
Again or, A + C = 710
A = 710 - C
A = 710 - 389
A = 321