Domain of f(x) = √6 - 2x is {x | -∞ < x ≤ 3}
Answer:
See below ~
Step-by-step explanation:
<u>Table 1</u>
⇒ Side length : Perimeter = <u>1 : 4</u>
⇒ Perimeter : Side length = <u>4 : 1</u>
<u></u>
<u>Table 2</u>
⇒ Radius : Diameter = <u>1 : 2</u>
⇒ Diameter : Radius = <u>2 : 1</u>
<u></u>
<u>Table 3</u>
⇒ Number of people : Number of tables = <u>5 : 1</u>
⇒ Number of tables : Number of people = <u>1 : 5</u>
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
5 is the answer to the promblem
Answer: multiply each side then multiply the answer by 2
Step-by-step explanation:
