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kirill [66]
3 years ago
10

ALGEBRA I /// Relations and Functions help!!! pls

Mathematics
1 answer:
Volgvan3 years ago
5 0
Place the x values (if there are two of the same x value you only include it once) in the first box vertically like:
5
-3
6
2
Place the y values (if there are two of the same y values only include it once) in the 2nd box vertically like:
1.2
7
-3
Now draw lines from your x values to their corresponding y values.
A function may NOT have two y-values assigned to the same x-value, but it may have two x-values assigned to the same y-value.
So this is a function!
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Four mathematicians, three physicists, and an engineer are to be seated equally spaced around a circular table. How many differe
Vesna [10]

First, we can choose the seats for the four mathematicians.  Then we seat the physicits, then the engineer.  There are 4! ways to seat the mathematicians, then 3! ways to seat the physicists, then 1! ways to seat the engineer.  But then we must divide by 8, because we can rotate the table, so there are 8!*4!*3!/8 = 725760 ways to seat everyone.

3 0
3 years ago
Help please with algebra problem
Strike441 [17]
Number of weekend minutes used: x
Number of weekday minutes used: y

This month Nick was billed for 643 minutes:
(1) x+y=643

The charge for these minutes was $35.44
Telephone company charges $0.04 per minute for weekend calls (x)
and $0.08 per minute for calls made on weekdays (y)
(2) 0.04x+0.08y=35.44

We have a system of 2 equations and 2 unkowns:
(1) x+y=643
(2) 0.04x+0.08y=35.44

Using the method of substitution
Isolating x from the first equation:
(1) x+y-y=643-y
(3) x=643-y

Replacing x by 643-y in the second equation
(2) 0.04x+0.08y=35.44
0.04(643-y)+0.08y=35.44
25.72-0.04y+0.08y=35.44
0.04y+25.72=35.44

Solving for y:
0.04y+25.72-25.72=35.44-25.72
0.04y=9.72

Dividing both sides of the equation by 0.04:
0.04y/0.04=9.72/0.04
y=243

Replacing y by 243 in the equation (3)
(3) x=643-y
x=643-243
x=400


Answers:
The number of weekends minutes used was 400
The number of weekdays minutes used was 243
6 0
2 years ago
Use scalar multiplication to determine the coordinates of the vertices of the dilated figure.
zimovet [89]

Answer:

this is the answer

Step-by-step explanation:

7 0
3 years ago
Find the area: (I will give brainliest) +50 points.
scZoUnD [109]

Answer:

A_{total} = 16\ cm^2

Step-by-step explanation:

<u>Step 1:  Determine the area of the top rectangle</u>

We can tell that the total shape seems like two rectangles glued together.  We can separate the top rectangle and determine the area of it and then determine the area of the bottom rectangle and combine them.  Lets first solve the left rectangle.

A=l*w

A_{top\ rectangle}=6\ cm * 2\ cm

A_{top\ rectangle}=12\ cm^2

<u>Step 2:  Determine the area of the bottom rectangle</u>

A=l*w

A_{bottom\ rectangle}=2\ cm * 2\ cm

A_{bottom\ rectangle}=4\ cm^2

<u>Step 3:  Determine the total area</u>

A_{total}=A_{top\ rectangle}+A_{bottom\ rectangle}

A_{total}=12\ cm^2+4\ cm^2

A_{total} = 16\ cm^2

Answer:  A_{total} = 16\ cm^2

8 0
2 years ago
Read 2 more answers
What is the midpoint of the line segment
Karo-lina-s [1.5K]

Answer:

The answer to your question is (-1, -1)

Step-by-step explanation:

Data

A (1, -6)

B (-3, 4)

Formula

Xm = \frac{x1 + x2}{2}

Ym = \frac{y1 + y2}{2}

Process

1.- Substitute the values in the formula

x1 = 1   x2 = -3

Xm = \frac{1 - 3}{2} = \frac{-2}{2} = -1

y1 = -6   y2 = 4

Ym = \frac{-6 + 4}{2} = \frac{-2}{2} = -1

2.- The midpoint is  (-1, -1)

5 0
3 years ago
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