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kiruha [24]
3 years ago
13

Zorah, a musician, pays $120 to have her instrument tuned and $10 per hour for a booth at a fair. She estimates that she earns $

25 per hour in tips. The equation can be used to represent the break-even point. 120 + 10x = 25x How many hours, x, will Zorah have to play in order to break even?
Mathematics
2 answers:
-BARSIC- [3]3 years ago
8 0
Subtracting 10x from the given equation gives
  120 = 15x
Then dividing by 15 gives
  8 = x

Zorah will have to play 8 hours in order to break even (cover her expenses exactly).
LUCKY_DIMON [66]3 years ago
3 0

Answer:

c

Step-by-step explanation:

8

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                                                                              this is squared btw
6 0
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Find the area of a regular pentagon with side equal to 3 and apothem equal to k. 1.5k 7.5k 12k
Anna007 [38]
Area=(5/2)*(3*k)=7.5k
8 0
3 years ago
Read 2 more answers
Suppose that P(A)=0.5, P(B)= 0.4 and P(B/A) =0.6. Find each of the following.
Lady_Fox [76]

Part (a)

P(A) = 0.5

P(B) = 0.4

P(B/A) = 0.6

P(A and B) = P(A)*P(B/A)

P(A and B) = 0.5*0.6

P(A and B) = 0.3

<h3>Answer: 0.3</h3>

==========================================

Part (b)

We'll use the result from part (a)

P(A or B) = P(A) + P(B) - P(A and B)

P(A or B) = 0.5 + 0.4 - 0.3

P(A or B) = 0.6

<h3>Answer: 0.6</h3>

===========================================

Part (c)

A and B are not independent since P(B) does not equal P(B/A). The fact that event A happens changes the probability P(B). Recall that P(B/A) means "probability P(B) based on event A already happened". A and B are independent if P(B) = P(B/A).

Events A and B are not mutually exclusive since P(A or B) is not zero.

<h3>Answer: Neither</h3>
7 0
3 years ago
Which ordered pair is in the solution set of the system of linear inequalities? y &gt;3/2 x – 1 y &lt;3/2 x – 1 (–5, 2) (2, 2) (
Vikentia [17]

Answer:

No solution

Option 4 is correct

Step-by-step explanation:

Given: The system of inequality

y>\dfrac{3}{2}x-1

y

We need to choose correct option.

Option 1: (-5,2)

Put x=-5 and y=2

Equation 1                               Equation 2

2>\dfrac{3}{2}(-5)-1                            2

2>-8.5                                    2

    TRUE                                     FALSE

Option 2: (2,2)

Put x=2 and y=2

Equation 1                              Equation 2

2>\dfrac{3}{2}(2)-1                    2

2>2                                           2

  FALSE                                      FALSE

Option 3: (5,2)

Put x=-5 and y=2

Equation 1                            Equation 2

2>\dfrac{3}{2}(5)-1                      2

2>6.5                                           2

 FALSE                                      TRUE

Option 1, 2 and 3 are incorrect because both equation must be true for solution.

Hence, Option 4 is correct no solution.  

6 0
2 years ago
Read 2 more answers
It’s only 10 points but it’s all i got (:
weqwewe [10]

Answer:

Thx a lot

Step-by-step explanation:

4 0
3 years ago
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