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Savatey [412]
3 years ago
12

The rental of the ice is $75, plus $3 per skater. Write an expression for the cost in dollars for n skaters.

Mathematics
1 answer:
eduard3 years ago
6 0

Answer:

f(n)=75+(n*3)

Step-by-step explanation:

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Researchers working the mean weight of a random sample of 800 carry-on bags to e the airline. Which of the following best descri
Sphinxa [80]

Answer:

(E) The bias will decrease and the variance will decrease.

Step-by-step explanation:

Given that researchers working the mean weight of a random sample of 800 carry-on bags to e the airline.

We have to find out the effect of increasing the sample size on variance and bias.

We know as per central limit theorem, sample mean follows a normal distribution with mean = sample mean

and std deviation of sample mean = std error = \frac{std dev}{\sqrt{n} }

Thus std error the square root of variance is inversely proportional to the square root of sample size.

Also whenever we increase sample size the chances of bias would decrease as the sample size becomes larger

So correct answer is both bias and variation will decrease.

(E) The bias will decrease and the variance will decrease.

8 0
3 years ago
Mel Needs to park his car for eight hours. Spikes parking place charges five dollars per hour for the first three hours and thre
Dima020 [189]

Answer:

  • Spike's Parking
  • $5 less

Step-by-step explanation:

After 3 hours, Spike charges 6 dollars per hour. For 3 hours, the charge is only $5×3 = $15 (which is $3 less than $6×3). So the rate after 3 hours can be modeled by ...

  s(h) = 6h -3

For 8 hours, s(8) = 6·8 -3 = 45 . . . . dollars

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After 4 hours, Main Deck charges 8 dollars per hour. For 4 hours, the charge is only $18 (which is $14 less than $8×4). So the rate after 4 hours can be modeled by ...

  m(h) = 8h -14

For 8 hours, m(8) = 8·8 -14 = 50 . . . . dollars

__

For 8 hours, the $45 charge at Spike's is $5 less than the $50 charge at Main Deck.

6 0
3 years ago
What is the completely factored form of f(x) = 6x<br>x2 - 4x + 15?​
maria [59]

Answer:

(x+1)(2x-3)(3x-5)

Step-by-step explanation:

5 0
3 years ago
3)
Sindrei [870]

Answer:

7.6 liters

Step-by-step explanation:

5 0
3 years ago
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Which property is represented below? <br> (7 * 3) * 8 = 8 * (7 * 3)
Marina86 [1]

9514 1404 393

Answer:

  commutative property

Step-by-step explanation:

The <em>commutative property of multiplication</em> lets you swap the order of the operands (7*3) and 8 to make them have the order 8 and (7*3).

6 0
2 years ago
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