First, X^2 while x is 4 =4^2, which is 4x4, which is 16
3X while x is 4 is 12. 16-12=4. So the answer is 4
Hello!
We can solve this system using substitution.
Since y = -3x + 5, we can substitute this into the following equation:
5x - 4(-3x + 5) = -3
Simplify:
5x - 4(-3x) - 4(5) = -3
5x + 12x - 20 = -3
Combine like terms:
17x - 20 = -3
Add 20 to both sides:
17x = 17
x = 1
Substitute to find y:
y = -3(1) + 5
y = -3 + 5
y = 2
Solution: (1, 2)
Answer:
- $5 bills x 5, $1 bills x 10, quarters x 16, dimes x 9
Step-by-step explanation:
- $5 bills = x, total = 5x
- $1 bills = 2x, total = x
- Quarters = 3x + 1, total = 0.25(3x + 1)
- Dimes = 3x + 1 - 7= 3x - 6, total = 0.1(3x - 6)
<u>Equation below as the sum, solve for x:</u>
- 5x + 2x + 0.25(3x + 1) + 0.1(3x - 6) = 39.9
- 7x + 0.75x + 0.25 + 0.3x - 0.6 = 39.9
- 8.05x - 0.35 = 39.9
- 8.05x = 40.25
- x = 40.25/8.05
- x = 5
<u>Number of each bill and coin:</u>
- $5 bills = 5
- $1 bills = 2*5 = 10
- Quarters = 3*5 + 1 = 16
- Dimes = 3*5 - 6 = 9
Answer:
Step-by-step explanation:
Answer:
13 inches
Step-by-step explanation:
10 * 1/4 = 2 1/2 inches
16 * 1/4 = 4 inches
2(2 1/2) + 2(4) = 13 inches
