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N76 [4]
3 years ago
7

Muscles, a membership-only gym is hoping to open a new branch in a small city in Pennsylvania that currently has no fitness cent

ers. According to their research approximately 12,600 residents live within driving distance of the gym. Muscles sends out surveys to a sample of 300 randomly selected residents in this area (all of who respond) and finds that 40 residents say they would visit a gym if one was located in their area. Based on the past survey research, Muscles estimates that approximately 30% of these respondents would actually join the gym if they opened one in the area. Based on this information and the results of the sample survey, about how many residents should Muscles expect to join its new branch?
A) 134
B) 504
C) 1,680
D) 3,780
Mathematics
1 answer:
Cloud [144]3 years ago
7 0

Answer:

  B) 504

Step-by-step explanation:

They should expect 30% of 40 out of every 300 of the 12,600, so ...

  0.30 × 40/300 × 12,600 = 504

About 504 residents might be expected to join.

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Can someone please help me? :)
gtnhenbr [62]

Answer:

One possible side length could be a length of 6.7.

Step-by-step explanation:

We can assume that the hypotenuse of the triangle is 9 and one side length is 6. We can find the third side length using the pythagorean theorem [ a² + b² = c² ]. Use what we are given and solve for b.

6² + b² = 9²

36 + b² = 81

b² = 45

b ≈ 6.7

Best of Luck!

5 0
3 years ago
The profit (in thousands of dollars) of a company is given by P(x) = -8x2 + 32x + 14.
andre [41]

Answer:

C

Step-by-step explanation:

The profit (in thousands of dollars) of a company is given by the function:

\displaystyle P(x) = -8x^2+32x+14

And we want to find the maximum profit of the company.

Since the function is a quadratic with a negative leading coefficient, the maximum profit will occur at its vertex. Recall that the vertex of a quadratic is given by:

\displaystyle \text{Vertex} = \left(-\frac{b}{2a}, f\left(-\frac{b}{2a}\right)\right)

Find the <em>x-</em>coordinate of the vertex. In this case, <em>a</em> = -8, <em>b</em> = 32, and <em>c</em> = 14. Hence:

\displaystyle x=-\frac{(32)}{2(-8)}=\frac{32}{16}=2

To find the maximum profit, substitute this value back into the function. Hence:

\displaystyle P(2) = -8(2)^2+32(2) + 14 = 46

Therefore, the maximum profit of the company is 46 thousand dollars.

Our answer is C.

5 0
2 years ago
Quick algebra 1 question for 50 points!
Mumz [18]

Answer:

y is equal to 24

Step-by-step explanation:

If y is directly proportional to x when x is equal to 5 and y is 12, then when you multiply 5 by 2 which is 10, y will be proportional to that when you multiply 12 by 2 which is 24

7 0
2 years ago
Read 2 more answers
Describe how to find the scale factor if an antenna is 60 feet long and a scale drawing shows the length as 1 foot long. Please
bekas [8.4K]
The actual is 60 feet long, the drawing is only 1 foot long. So the scale factor must be 1/60. You know that the scale factor has to be less than one in this case because you're going from a bigger measurement to a smaller measurement(60 to 1).
3 0
3 years ago
If you are making a scale drawing of a giraffe that is 6m tall, and the height of the giraffe in your drawing is 3 cm, what is t
netineya [11]
18cms because if I take 6cms times 3cms it will equal 18cms.
7 0
3 years ago
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