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3 years ago

13

What can you tell about the mean of each distribution? Help plz for real!!

1 answer:

worty [1.4K]3 years ago

7 0

Step-by-step explanation:

Mean=sum of observations/no. of observations

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Can someone help me?! I don’t understand how to do these problems

Dmitriy789 [7]

Answer:

first do 9x40 and get your answer then do 18x3 and get that answer and then add to do answers together

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3 years ago

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In ABC, what is the value of x?<br><br> Pls hurry im on a time limit here

kiruha [24]

Answer:

70

Step-by-step explanation:

By exterior angle theorem:

$(2x + 12) \degree = 112 \degree + 180 \degree - 2x \degree \\ \\ (2x + 12) \degree = 292 \degree - 2x \degree \\ \\ (2x + 12) \degree + 2x \degree = 292 \degree \\ \\ (2x + 12 + 2x) \degree = 292 \degree \\ \\ (4x + 12) \degree = 292 \degree \\ \\ 4x + 12 = 292 \\ \\ 4x = 292 - 12 \\ \\ 4x = 280 \\ \\ x = \frac{280}{4} \\ \\ x = 70$

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2 years ago

Samantha is painting her house. There are a total of 2,261 square feet of surface are to be painted. If she can paint 75 square

Viefleur [7K]

Answer:

c

Step-by-step explanation:

the equation would be C because

A would end up with a negative amount

B is more than she originally has to paint and

D has the wrong coefficient for <em> t</em>.

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3 years ago

Gary is paid $15.50 per hour in addition to a weekly salary of $50. This week he wants to earn more than $400. Write an inequali

kow [346]

Answer:

15.50h + 50 > 400

Step-by-step explanation:

Given;

Weekly salary = $50 per week

Additional pay = $15.50 per hour

The variable h represent the number of hours worked per week

The total amount earn per week is;

Weekly salary + total additional pay per week

50 + 15.50h

To earn more than $400 this week, the total amount earned in a week must be greater than 400;

15.50h + 50 > 400

Solving the equation we have;

15.50h > 400-50

h > (400-50)/15.50

h > 22.58 hours per week.

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3 years ago

Read 2 more answers

Determine the equation of the circle graphed below.

sergij07 [2.7K]

Answer:

Equation = (x - 6 )² + ( y + 3 )² = 9

Step-by-step explanation:

The circle passes through ( 6, 0) and ( 6 , -6)

They are the coordinates of the diameter.

Using this we can find the centre of the circle.

<u>Find the centre of the circle.</u>

Centre of the circle is the mid- point of (6, 0) and ( 6, -6)

$Centre = (\frac{x_1+x_2}{2} , \frac{y_1 + y_2}{2})$

$=(\frac{6 + 6}{2}, \frac{0 + (-6)}{2})\\\\=(6, -3)$

<u>Find the radius of the circle.</u>

$Radius = \frac{Diameter }{2}$

Diameter is the distance between the points (6 , 0) and ( 6, - 6)

$Diameter = \sqrt{(x_2 - x_1)^2+ (y_2 - y_1)^2\\}$

$=\sqrt{(6-6)^2 + (-6 -0)^2}\\\\=\sqrt{0 + 36} \\\\= 6$

Therefore,

$Radius ,r = \frac{6}{2} = 3$

<u>Standard equation of a circle:</u>

<u></u> $(x - a)^2 + (y - b)^2 = r^2 \ where \ (a , b) \ is \ the\ centre \ coordinates.$ <u></u>

Therefore , equation of the circle ;

$(x - 6)^2 + (y + 3)^2 = 3^2\\\\(x -6)^2 + (y + 3)^2 = 9$

6 0

3 years ago