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Elden [556K]
2 years ago
15

A public interest group hires students to solicit donations by telephone. After a brief training period students make calls to p

otential donors and are paid on a commission basis. Experience indicates that early​ on, these students tend to have only modest success and that 80​% of them give up their jobs in their first two weeks of employment. The group hires 7 ​students, which can be viewed as a random sample.
Mathematics
1 answer:
IceJOKER [234]2 years ago
8 0
I need help with the answer?
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A boy received 2 hamsters for christmas. after one year he had 4, after two years he had 12, and after three years he had 48. ho
Pachacha [2.7K]
Well if I was to follow the pattern then after four years it would be 240
7 0
2 years ago
Read 2 more answers
A caterer provides a conference banquet for a price of $40 per person for 20 or fewer people but will decrease the price by $1 p
mel-nik [20]

Answer:

The maximum revenue is $900, obtained with 30 people

Step-by-step explanation:

Naturally, the answer should be a number equal or higher than 20, because up to 20 persons, each one pays the same. Lets define a revenue function for x greater than or equal to 20.

f(x) = x*(40-(x-20)) = -x²+60x

Note that f multiplies the number of persons by how much would they pay (here, assuming that there are more than 20).

f is quadratic with negative main coefficient and its maximum value will be reached at the vertex.

The value of the x coordinate of the vertex is -b/2a = -60/-2 = 30

for x = 30, f(x) = 30*(40-(30-20))=30*30=900

So the maximum revenue is $900.

7 0
1 year ago
Thomas graphed the line that represents the equation y=34x.
zloy xaker [14]

Answer:

The ordered pairs represent points on the line are

(4, 3) ⇒ C

(2, \frac{3}{2} ) ⇒ D

(-8, -6) ⇒ E

Step-by-step explanation:

To find the ordered pairs represent points on the line, substitute x by the x-coordinate of each point, if the value of y equals the y-coordinate of the point, then the point is on the line.

∵ The equation is y = \frac{3}{4} x

∵ The ordered pair is (8, \frac{1}{6} )

→ Substitute x by 8

∴ y = \frac{3}{4} (8)

∴ y = 6

∵ The value of y does not equal the y-coordinate of the ordered pair

∴ The ordered pair (8, \frac{1}{6} ) does not represent a point on the line

∵ The ordered pair is (\frac{-2}{3}, \frac{1}{2} )

→ Substitute x by \frac{-2}{3}

∴ y = \frac{3}{4} (\frac{-2}{3})

∴ y = \frac{-1}{2}

∵ The value of y does not equal the y-coordinate of the ordered pair

∴ The ordered pair  (\frac{-2}{3}, \frac{1}{2} ) does not represent a point on the line

∵ The ordered pair is (4, 3 )

→ Substitute x by 4

∴ y = \frac{3}{4} (4)

∴ y = 3

∵ The value of y equal the y-coordinate of the ordered pair

∴ The ordered pair (4, 3) represents a point on the line

∵ The ordered pair is (2, \frac{3}{2} )

→ Substitute x by 2

∴ y = \frac{3}{4} (2)

∴ y = \frac{3}{2}

∵ The value of y equal the y-coordinate of the ordered pair

∴ The ordered pair (2, \frac{3}{2} ) represents a point on the line

∵ The ordered pair is (-8, -6 )

→ Substitute x by -8

∴ y = \frac{3}{4} (-8)

∴ y = -6

∵ The value of y equal the y-coordinate of the ordered pair

∴ The ordered pair (-8, -6) represents a point on the line

5 0
1 year ago
Given 8x-3y=-21, 3x+y=-10; Prove x=-3
Mashcka [7]
The numbers start from the top
3 0
1 year ago
What percent of 137.4 is 96?
Neporo4naja [7]
X = 96

100 137.4

137.4x=(100)(96)

137.4x=9600

137.4x/137.4=9600/137.4

x=70%
7 0
2 years ago
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