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lord [1]
3 years ago
14

Please Help!

Mathematics
2 answers:
Juliette [100K]3 years ago
7 0
Your center would be (3,-4) 
DanielleElmas [232]3 years ago
7 0
Hope this helps you.

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A store owner paid 15 dollars for a book. She marked up the price of the book by 40 percent to determine its selling price.
SpyIntel [72]
Part a: 21 dollars because you multiply .40 with 5 and get 6. you add the 6 to the 15 and get 21.
part b: 30.21 because you multiply 38 by .25 and get the answer for that and then subtract that number from 38. then you multiply 0.06 by 38 and when u get that number, add that to the discounted price.
6 0
3 years ago
Two gears are adjusted so that the smaller gear drives the larger one. if the smaller gear of 3.7cm rotates through an angle of
zepelin [54]

Answer:

<em>The larger gear will rotate through 156°</em>

Step-by-step explanation:

<u>Arc Length</u>

The arc length S of an angle θ on a circle of radius r is:

S = \theta r

Where θ is expressed in radians.

The smaller gear of r1=3.7 cm drives a larger gear of r2=7.1 cm. The smaller gear rotates through an angle of θ1=300°.

Convert the angle to radians:

\displaystyle \theta_1=300*\frac{\pi}{180}=\frac{5\pi}{3}

The arc length of the smaller gear is:

\displaystyle S_1=\frac{5\pi}{3}\cdot 3.7

\displaystyle S_1=\frac{18.5\pi}{3}

The larger gear rotates the same arc length, so:

\displaystyle S_2=\frac{18.5\pi}{3}

\displaystyle \theta_2\cdot r_2=\frac{18.5\pi}{3}

Solving for θ2:

\displaystyle \theta_2=\frac{18.5\pi}{3r_2}

\displaystyle \theta_2=\frac{18.5\pi}{3*7.1}

\theta_2=2.73\ radians

\displaystyle \theta_2=2.73*\frac{180}{\pi}=156

The larger gear will rotate through 156°

7 0
3 years ago
Mary takes 50 minutes to wash an elephant and NIgel takes 40 minutes to wash an elephant. If they wash and elephant together, ho
oksano4ka [1.4K]

Answer:

25 minutes

Step-by-step explanation:

When there are to people washing one elephant they will take half the time.

So half of the longest time will be the answer to the question.  

Mary takes longer then Nigel so once Nigel is finished Mary will still wash her side for 5 minutes extra.

4 0
3 years ago
TIME REMAINING
sesenic [268]

Answer: It's not balanced because it's less likely to include teens, young adults, and senior citizens in the patron population.

Step-by-step explanation: If wants to get a good sample for the whole "population," she should've taken broader samples of people of all ages.  

4 0
3 years ago
Y varies directly with x it has a constant rate of change of 6. When the value of y is 11, then the value of x could be?
makvit [3.9K]

Answer: \frac{11}{6}

<u>Explanation:</u>

y varies directly with x means: \frac{y}{x} = k  ; where k is the rate

  • \frac{y}{x} = k
  • \frac{11}{x} = 6
  • (x)\frac{11}{x} = 6(x)
  • 11 = 6x
  • \frac{11}{6} =\frac{6x}{6}
  • \frac{11}{6} = x
8 0
3 years ago
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