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Ostrovityanka [42]
3 years ago
13

Find the value of y if the mean is 22 and 18 ( 2y+1), 10 and 20 is 15​

Mathematics
1 answer:
Igoryamba3 years ago
8 0

Answer:

2

Step-by-step explanation:

Mean = sum of data/sample size

Sum of data = 22 + 18 + 2y+1 + 10 + 20

Sample size = 5

Mean = 15

Substitute

15 = 22 + 18 + 2y+1 + 10 + 20/5

15*5 = 22 + 18 + 2y+1 + 10 + 20

75 = 70+2y+1

2y = 75-71

2y = 4

y = 4/2

y = 2

Hence the value of y is 2

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Benjamin decides to treat himself to breakfast at his favorite restaurant. He orders chocolate milk that costs $3.25Then, he wan
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Answer:

 is the correct answer.

Step-by-step explanation:

As per the question statement:  

Cost of Chocolate milk which is ordered already = $3.25.

Benjamin want his bill to be at most =  $30

Each stack of pancakes contains 4 pancakes.

Each stack of pancake costs= $5.50

Given that S represents the number of stacks of pancakes bought.

We have, Cost of 1 pancake = $5.50

Now, let us calculate the cost of the number of stacks of pancakes bought.

\text{Cost of one stack of pancakes}\times \text{Number of stacks of pancakes bought}

i.e.  

5.50S

So, total bill = Cost of chocolate milk shake + Money spent on stacks of pancakes = \$3.25+5.50S

Now, this money should be lesser than or equal to $30 because maximum bill that Benjamin wants is $30.

So, the inequality can be written as:

\bold{3.25+5.50S \le 30}

Please refer to brainly.com/question/17138529 as well.

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3 years ago
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Is the following relation a function?
yuradex [85]

Answer:

Since there is a curve, I believe it is a function.

8 0
3 years ago
Divide 125 by 1/4 and add 13 to the quotient.<br><br> Plz help
Karo-lina-s [1.5K]
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The center of a circle and a point on the circle are given. Write the equation of the circle in standard form.
Stells [14]

Answer:

25= (x-2)² + (y+4)²

Hope this helps!!!

3 0
3 years ago
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Help pls
babymother [125]

Answer:

1). x = 10 m

2). x = 15 cm

3). x = 5 yd

4). AB = 10 units

Step-by-step explanation:

1). By Pythagoras theorem in the given triangle,

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 Where 'c' = Hypotenuse

 a and b = Legs of the right triangle

 By substituting measures of the sides in the formula,

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2). By using Pythagoras theorem in this triangle,

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3). By Pythagoras theorem,

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4). If BD is a perpendicular bisector of AC,

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  By Pythagoras theorem in ΔABD,

  AB² = BD² + AD²

  AB² = 8² + 6²

  AB = \sqrt{100}

  AB = 10 units

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3 years ago
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