Answer: old McDonald has 54 chickens and 2 cows.
Step-by-step explanation:
Let x represent the number of chickens that old McDonald have.
Let y represent the number of cows that old McDonald have.
He counted 56 heads. A chicken and a cow has one head each. It means that
x + y = 56
He counted 116 legs. A chicken has 2 legs and a cow has 4 legs. It means that
2x + 4y = 116 - - - - - - - - -1
Substituting x = 56 - y into equation 1, it becomes
2(56 - y) + 4y = 116
112 - 2y + 4y = 116
- 2y + 4y = 116 - 112
2y = 4
y = 4/2 = 2
x = 56 - y = 56 - 2
x = 54
You would have 4 left after dinner: (.875)(32)=28 so you have 28 completed before dinner and would have 4 left to do.
Answer:
If the darker, longer lines are going in units of one, then A is equal to -2.
Step-by-step explanation:
Answer:8
Step-by-step explanation: 7x8=56
Answer:
(4) Bonnie’s bag is within the middle 95% of the simulated data supporting the company’s claim.
Step-by-step explanation:
We are being told that:
The J & B candy company claims that 45% of the candies it produces are blue, 30% are brown, and 25% are yellow.Each bag holds 65 candies.
From the simulation that was run 200 times
Given that:
The mean is 29.270 and the standard deviation is 3.936. from the diagram attached.
The mean - 2 SD = 29.270 - 2(3.936)
= 29.270 - 7.872
= 21.398,
This is less than 24, Hence, Bonnie’s bag is within the middle 95% of the simulated data supporting the company’s claim.
