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3 years ago

Adult tickets for a charity concert were $5 each. Students were admitted for $2 each. The charity concert

Mathematics

1 answer:

AfilCa [17]3 years ago

3 0

Answer:

students 150

adult 550

Step-by-step explanation:

x + y = 700

5x + 2y = 3050

x = 700 - y

5(700 - y) + 2y = 3050

3500 - 5y + 2y = 3050

-3y + 3500 = 3050

-3y = 3050 - 3500

-3y = -450

y = -450 / -3

y = 150

x = 700 - y

x = 700 - 150

x = 550

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3 years ago

a bag contains 5 red skittles, 3 purple skittles, and 2 orange skittles.A skittle is removed and not replaced, then another skit

dybincka [34]

The probability of two independant events $P_a$ and $P_b$ can be found by multiplying the individual probabilities like so:
$P_t=P_{a}*P_b$

For each individual probability we can find the answer via a simplfied representation:
$P_x = \frac{wanted}{total}$

For the first skittle (red) we have:
$P_{red} = \frac{red}{total}=\frac{5}{10}=0.5$

For the second skittle (orange) we have:
$P_{orange} = \frac{2}{9} = 0.2222...$
**(Notice that the total is now NINE since we didn't put the first red one back in the bag.)

So:
$P_{total} = P_{red} \times P_{orange}$
$P_{total} = \frac{5}{10} \times \frac{2}{9}$
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3 years ago

The total number of degrees, D, in an n-sided polygon is given by the formula D=180(n-2). When Janelle solves for n, she gets n=

Rus_ich [418]

<span>D = 180 * (n -2)
D = 180n -360
180n = D +360
n = (D / 180) + 2

So, the answer is "A"
And we can test this with a square, sum of angles = 360
n = (D / 180) +2
n = (360 / 180) +2
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correct

Source:
http://www.1728.org/polygon.htm

</span>

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2 years ago

Read 2 more answers

The growth of a local raccoon population approximates a geometric sequence where f(n) is the number of raccoons in a given year

Luda [366]

Answer:

f(n) = 14.3908 * 1.2561^(n-1)

Step-by-step explanation:

A geometric sequence can be defined by:

f(n) = a*r^(n-1), where 'a' is the inicial population, and 'r' is the ratio the population increases each year

If we have 45 raccoons after 6 years and 71 raccoons after 8 years, we can use these values in the equation to find the values of 'a' and 'r':

for n=6, f(n) = 45:

45 = a*r^5

for n=8, f(n) = 71:

71 = a*r^7

dividing the second equation by the first, we have:

r^2 = 71/45 = 1.5778

r = 1.2561

Now, applying this value of 'r' in the first equation, we find 'a':

45 = a*1.2561^5

a = 45/3.1270 = 14.3908

So, the function that models the local raccoon population 'f(n)' in the terms of the number of years 'n' is:

f(n) = 14.3908 * 1.2561^(n-1)

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3 years ago