The coordinates of A is equal to (-7, 3).
Answer:
a) We are given the length of both legs. We need to find the hypotenuse.
b) 40^2 + 71.5^2 = X^2
c) 40^2 + 71.5^2 =
1600 + 5,112.25 = 6,712.25 in.
d) 6,712 inches
Step-by-step explanation:
Multiply you first equation by 2 to get 4x + 10y = 22
Now the x terms can be eliminated and cancelled out using elimination.
4x + 10y = 22
4x + 3y = 1
To eliminate you need to "subtract", so you need to multiply one of the equations by -1.
4x + 10y = 22
-4x -3y = -1
------------------
0 + 7y = 21
y = 3
Now plug 3 into either one of the equations to get x.
Answer: $4.28
Tip: $4.275 = $4.28
Step-by-step explanation:
Use the formula: Tip = Tip% x Bill Total
In this case, the tip is 15% and the total bill is $28.50.
15% = 0.15
28.50 x 0.15 = 4.275
Round 4.275 to the hundredths, which equals 4.27
Answer: Tip: $4.275 = $4.28
Step-by-step explanation:
Use the formula: Tip = Tip% x Bill Total
In this case, the tip is 15% and the total bill is $28.50.
15% = 0.15
28.50 x 0.15 = 4.275
Round 4.275 to the hundredths, which equals 4.27