Answer:
15 grams
Step-by-step explanation:
If the copper made up 80% of the weight of the bar (w), then the bar weighed ...
0.80w = 12 g
w = (12 g)/0.80 = 15 g
_____
Copper has a density of about 8.96 g/cm³, so Nancy's "large" metal bar is about the size of two sugar cubes.
Answer:f(x)= -2(x-105)^2+18050
Step-by-step explanation: if you plug in 10 as x the answer would equal to zero. And then if you plug In 105 as x the answer would equal to 18050 proving the answer to be correct.
Wait which 1 are yhu answering?
Answer:
c 17
Step-by-step explanation:
You make 23 a day plus 3.60 per sale
Income = 23+ 3.6 s
You want to make at least 84
84 ≤ 23+ 3.6 s
Subtract 23 from each side
84 -23 ≤ 23-23 +3.6s
61 ≤ 3.6s
Divide by 3.6 on each side
61/3.6 ≤ 3.6s/3.6
16.94444 ≤ s
You must make more than 16.94444 sales
But you cannot make part of a sale so
You must make at least 17 sales
Answer:
John's standard z-score is 2.383
Step-by-step explanation:
We are given the following in the question:
Population mean, μ = $810
John's rent = $1370
Population standard deviation, σ = $235
Formula:

Putting all the values, we have

John's standard z-score is 2.383