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maksim [4K]
3 years ago
13

Alicia earns more than 12 per hour at her job at the bookstore. Write an inequality to show the least amount of money Alicia wil

l earn for working x hours
Mathematics
1 answer:
zhuklara [117]3 years ago
5 0
T>12x. the total will be more than x multiplied by 12.
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Drilon got 63 out of 72 correct in his test. What fraction of the marks did he get correct?
tatyana61 [14]

Answer:

87.5%

Step-by-step explanation:

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3 years ago
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Solve the equation 53y-55=42y​
tekilochka [14]

Answer:

y=5

Step-by-step explanation:

Move all terms to the left

53y-55-(42y)=0

Add all the numbers together, and all the variables

11y-55=0

Move all terms containing y to the left, all other terms to the right

11y=55

y=55/11

y=5

4 0
3 years ago
What is the area of the sector ?​
worty [1.4K]

They forget to say "not to scale".  I'm guessing this is trig because I don't see another way to do it.

Let's consider x=chord PQ first.  By the Law of Cosines

x^2 = 3^2 + 5^2 - 2(3)(5) \cos 81^\circ = 34 - 30\cos 81^\circ

We have an isosceles triangle formed by two radii of 9 cm and x=PQ.  By the Law of Cosines again,

x^2 = 9^2 + 9^2 - 2(9)(9) \cos B

x^2 = 162 - 162 \cos B

\cos B = \dfrac{162 - x^2}{162} = 1 - \dfrac{x^2}{162}

\cos B = 1 - \dfrac{34 - 30\cos 81^\circ}{162}

B = \arccos \left(1 - \dfrac{34 - 30\cos 81^\circ }{162} \right)

The area of the circle is the fraction given by the angle,

A = \dfrac{B}{360^\circ} \pi r ^2

A \approx \dfrac{ \arccos \left(1 - \dfrac{34 - 30\cos 81^\circ}{162} \right) }{360} (3.142)9^2

A\approx 24.7474332960707

Answer: 24.7 sq cm

8 0
3 years ago
If a circle has a diameter of 9 cm and circle B has a radius of 5 cm which circle has a larger circumstance in how many centimet
emmasim [6.3K]

Answer:

circle a has the larger circumstance. it is larger by 12.57 cm

5 0
2 years ago
Draw a model to represent the following problem 42 divide 7 Answer
hodyreva [135]

We have to draw the model for 42 divide 7 . In order to draw the model we use below steps.

  • Draw 7 boxes to represent 7 groups.
  • Assume 42 as the number which represents the total of these 7 groups.
  • Put a question mark at the first box.

Attached is the model to represents 42 divide 7 .

In the question mark we should put 6. Hence, when we add 6 to 7 times that will be equal to 42.


5 0
3 years ago
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