5b + 9s = 28.75
10b + 10s = 47.5
Multiply all terms in equation #1 by 2.
10b + 18s = 57.5
Subtract both equations from each-other.
8s = 10
Divide both sides by 8.
s = 1.25
The cost of a soda is 1.25, and because we know this, we can plug it into either equation to solve for the cost of b, a burger.
5b + 9(1.25) = 28.75
5b + 11.25 = 28.75
Subtract 11.25 from both sides.
5b = 17.5
Divide both sides by 5.
b = 3.5
Answer:
9x−18
Step-by-step explanation:
Is this even possible
26
2 /3 cm3
V = (6
2
3
)(2)(2) = 26
Can also be solved by counting the fractional cubes.
2/5.
The prime numbers from 1 to 20 are 2, 3, 5, 7, 11, 13, 17 and 19.
A total of 8.
So the probability of rolling a prime number is 8/20
= 2/5.
