Rational or Irrational
Is 3/4 Rational or Irrational?
Rational
what is a function?
x value can not repeat
How to caculate mean(average)?
add all numbers then divide by how many numbers are there
Solve x - 7 =13
20
what is the slope and y-intercept for y = -1/3x - 10
-1/3 and -10
Is 3.145678910.... Rational or Irrational?
Irrational
Is {(3, 24), (24, 3), (1, 1), (3, 2)} a function?
No, 3 repeat twice
How to find median?
To find the median, first arrange all numbers in order from smallest to largest (ascending order)
solve 7x – 4 = 10
2
Find slope from two points (2, 5)and (9, 19)
2
What is another phrase for Halloween?
All Hallows Eve
If g(x) = -2x^2 +16, then g(-3) equals
-2
what is the mode and range for : 112, 144, 131, 131, 144, 112, 112
112 and 32
solve ‐12x – 36 = 0
-3
x 2 4 6 9 12 16
h(x). 6. 12. 24. 51. 60. 64
Between weeks 4 and 12, the average rate of change, in inches per week, is
6
Which expression represents an irrational number?
1) √16 + √1
2) √25 + √4
3) √36 + √7
4) √49 + √9
3) √36 + √ 7
Given the relation R = {(−2,3),(a,4),(1,9),(0,7)}. Which replacement for a makes this relation a function?
any numbers except -2, 1, and 0
What is lower quartile and upper quartile(Q1) and upper quartile(Q3) for this:
45 48 51 54 61 62 66 68 70 74 75 77 78 82 93
54 and 77
solve 2(3x +7) + x = 70
8
Allysa spent $35 to purchase 12 chickens. She bought two different types of chickens. Americana chickens cost $3.75 each and Delaware chickens cost $2.50 each.
Write a system of equations that can be used to determine the number of Americana chickens, A, and the number of Delaware chickens, D, she purchased.
A + D = 12
3.75A + 2.50D = 35
what is a rational number? and what is irrational number?
Rational - repeating decimal, fraction,integers, terminating decimal. Irrational - decimals that don't repeat.
If f(x) = x / x^2 - 16 , what is the value of f(-10)?
-5/42
Find mean, median, mode, range and Q1 , Q3
26 28 33 39 40 46 47 51 55 60 64
Mean = 44.45 Range = 38 Median = 46, Q1= 33, Q3 = 55. No mode
solve 3/4 (4x+8) = -12
-6
A recreation center ordered a total of 15 tricycles and bicycles from a sporting goods store. The number of wheels for all the tricycles and bicycles totaled 38.
Write a linear system of equations that models this scenario, where t represents the number of tricycles and b represents the number of bicycles ordered.
t + b = 15
3t + 2b = 38