5x + 3y= 8.50
3x + 2y= 5.25
Lydia is the first equation. She bought 5 pounds of apples which is x and bought 3 pounds of bananas which is y. Basically, remember each banana and apple weighs a price per pound. We don't know the price so we just put an x. This is the same for the second equation
Answer:
x=0
Step-by-step explanation:
Step 1: Subtract x from both sides.
5x+4−x=x+4−x
4x+4=4
Step 2: Subtract 4 from both sides.
4x+4−4=4−4
4x=0
Step 3: Divide both sides by 4.
4x/4=0/4
Ok I will for free I don’t need money if it’s because of mental health I am ok for free
using the law of cosines:
a^2 = b^2 + c^2 - 2*b*c*cos(A)
a = 90, b = 55, c = 50
90^2 = 55^2 + 50^2 - 2*55*50*cos(A)
8100 = 3025 + 2500 - 5500 * cos(A)
5500 * cos(A) = 3025 + 2500 - 8100
5500 * cos(A) = -2575
cos(A) = -103/220
A = arccos(-103/220)
A = 117.9 degrees
