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stepladder [879]

3 years ago

15

Rodney rented a machine for $70.00 to make popcorn at a school event. In addition to the machine rental cost, the popcorn suppli

es cost him $0.15 per bag sold. Rodney sold popcorn for $1.00 per bag how much profit did rodney make if he sold 200 bags of popcorn

1 answer:

Korvikt [17]3 years ago

7 0

Answer:

170

Step-by-step explanation:

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Find the volume of the regular<br> Hexagonal prism

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2 years ago

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The number of pits in a corroded steel coupon follows a Poisson distribution with a mean of 6 pits per cm2. Let X represent the

Bas_tet [7]

Answer:

P(X=2)=0.0446

Step-by-step explanation:

If X follows a Poisson distribution, the probability p to have x pits in 1 cm2 is calculated as:

$p(x)=\frac{e^{-m}*m^x}{x!}$

Where m is the mean of pits per cm2, so, replacing m by 6 pits per cm2, we get that the probability is equal to:

$p(x)=\frac{e^{-6}*6^x}{x!}$

Now, the probability P(x=2) that there are 2 pits in a 1 cm2 is calculated as:

$p(x=2)=\frac{e^{-6}*6^2}{2!}\\p(x=2)=0.0446$

4 0

2 years ago

A plane flies round-trip to Philadelphia. If flies to Philadelphia at 220 miles per hour and back home with a tailwind at 280 mi

aleksandrvk [35]

To solve the problem we will use this equation where,

d will be distance.
<span>x is the speed of the plane without tailwind. </span>
<span>y is the speed of the wind affecting the plane.</span>
Going to Philadelphia the speed of the plane affected by wind will be x-y=220 miles/hr
Coming back with a tailwind, the speed of the plane will be x+y= 280 miles/hr.
since time = distance / speed, t1 =d/220 and t2 = d/280
and since the total time traveled is 6.5hrs
d/220 + d/ 280 = 6.5hrs
d = 800.8 miles x 2 (back and forth trip) the answer is 1601.6 miles

5 0

2 years ago

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