Answer:
15 and 1
Step-by-step explanation:
x and y are two numbers.
Two equations:
x · y = 15
x + y = 16
Rearrange one of the equations (I'll rearrange the sum equation):
x + y = 16
x = 16 - y
Substitute that to the other equation and solve for y:
x · y = 15
(16 - y) · y = 15
16 - y · y = 15
16 - y² = 15
-y² = 15 - 16
-y² = -1
y² = 1
y = √1
y = 1
Now substitute that to any of the equation and solve for x (in here, I'll choose the multiplication one):
x · y = 15
x · 1 = 15
x = 15
Now verify:
15 · 1 = 15
15 + 1 = 16
This is correct
The answer is 5 hours. Because if she works for $8 per hour and came home with $53, you subtract the 13 from the tips which leaves you with 40, and 40 divided by 8 is 5.
If you earn $9 per hour and you work 8 hours
So 8 x 9 = 72
$72 in 8 hours
Answer: 0.21
Step-by-step explanation:
2/10=0.2
1/100=0.01
0.2+0.01=0.21
Answer:
A is true but I dont know the rest I am very sorry .-.
Step-by-step explanation:
I Just added 18 + 12 = 30 + 10 = 40 and that is why A is true