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garri49 [273]
4 years ago
12

Why does the graph of a proportional relationship must pass through the origin (0,0)

Mathematics
1 answer:
ELEN [110]4 years ago
4 0

Answer:

Directly proportional relationships always pass through the origin (0,0). There are other linear relationships that do not pass through the origin.

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The following are the ages (years) of 5 people in a room:
kiruha [24]
Answer:

Explanation:

Let x be the age of the person who enter the room

(18 + 25 + 18 + 21 + 16 + x)/6 = 25
(77 + x)/6 = 25
77 + x = 25(6)
77 + x = 150
x = 150 - 77
x = 73
4 0
3 years ago
(b) Develop a probability distribution for x y. x y f(x y) 130 Incorrect: Your answer is incorrect. 80 Incorrect: Your answer is
GenaCL600 [577]

Answer:

P(X = x, Y = y) = f(x, y)

Step-by-step explanation:

Let X be a discrete random variable, and suppose that the possible values that it can assume are given by x1, x2,  x3, . . . , arranged in some order. Suppose also that these values are assumed with probabilities given by

P(X = xk) = f(xk)                k = 1, 2, . . . (1)

It is convenient to introduce the probability function, also referred to as probability distribution, given by

P(X = x) = f(x)

If X and Y are two discrete random variables, we define the joint probability function

of X and Y by

P(X = x, Y = y) = f(x, y)

where f(x, y) ≥ 0

5 0
3 years ago
What is a reasonable estimate for 3/2 x 5 1/4
IceJOKER [234]

Answer:

63/8 , 7 7/8 or 7.875

Step-by-step explanation:

First convert the mixed number to an improper fraction: 5 1/4 = 21/4

And then multiply the fractions 21/4 x 3/2 = 63/8

3 0
3 years ago
Can anyone help me solve this​
Zigmanuir [339]

Answer:

B

Step-by-step explanation:

THIS IS HOW YOU CAN FIND ANY MISSING ANGLE - ALSO SOLVES FOR X IN THIS QUESTION.

So, a traingle is 180 degrees.

A line is also 180 degrees.

We know that the angles that make up the triangle are 46, 90, and a missing angle

We need to find the missing angle to find x

To find the missing angle, we must subtract the known angles by the 180 degrees of the traingle.

So:

180-90

=

90

90-46

=

44

So we know the missing angle is 44 degrees.

Let subtract the missing angle(44 degrees) by the 180 degrees of the line:

180-44

=

136

<u>THIS IS WHAT ANSWERS THE OPTION METHOD THAT GIVES THE ANSWER</u>

So x equals 136. This is the missing angle x.

So, remember, both the line and the traingle are 180 degrees.

They both need to find the missing value, which we know is 44

The rest of both the triangle and line is 136 degrees.

Well, 136 degrees on the triangle is the known 90+46 degrees.

Since this will be the same on the line, we can think of x as:

90+46

This looks like answer 1.

Hope this helps! :)

Read top part so you can understand how to do future problems, and write in comments if you are confused/need more help.

5 0
3 years ago
Sammy gets paid $16 an hour and she works 7 hours day. She works 16 days a month. Sammys rent is $850 à month. Her other bills t
bekas [8.4K]

Answer:

Step-by-step explanation:

792 i think not sure

3 0
3 years ago
Read 2 more answers
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