If one redskin and 4 golden roughs cost $1.65, whereas 2 redskins and 3 golden roughs cost $1.55, how much does each type or swe
et cost?
1 answer:
Answer:
Redskins cost $0.25 and golden roughs cost $0.35.
Step-by-step explanation:
Let r be the cost of a redskin and g the cost of golden roughs. So we have the system of equations:
r + 4g = 1.65
2r + 3g = 1.55
Multiply the first equation by -2:
-2r - 8g = -3.30
Adding this to the second equation:
-5g = -1.75
g = 0.35.
Now substitute this into the first equation:
r + 4*0.35 = 1.65
r = 1.65 - 1.40
r = 0.25.
You might be interested in
Answer:
-14, -12, 0, 6, 8
Step-by-step explanation:
Answer:
4.5 hours
Step-by-step explanation:
Let x hours be the time needed the motorcycle to catch the car.
Car:
Time hours
Rate = 48 mph
Distance miles
Motorcycle:
Time hours
Rate = 64 mph
Distance miles
The distance traveled is the same, so
The sample mean is μ=105, and sample standard deviation is σₓ=.
The Z-score is .
Refer to standard normal distribution table.
The required probability is
You find a point at the intersection of a plane and line.