Ms. Xiao
What cartoon character does Ms. Xiao most often use in her word problems?
Minions (Bob, Kevin, Stuart)
What is the upper and lower bound of 5?
Upper bound: 5.5
Lower bound: 4.5
If 3n=81. Find n.
n=4
Which of the following are rational numbers?
7pi 0.3333 (5/15)-1 10
All except 7pi
L1 has the equation y+16x=100-14x. What is the slope and y-intercept of L1?
y=-30x+100
slope: -30
y-intercept: (0,100)
What country was Ms. Xiao born in?
China
If x=7.37 to two decimal places, what is the lower and upper bound?
Lower bound: 7.365
Upper bound: 7.375
Write the expression as a single power
2^5 times 4^2
29
Is 3√125 a surd or not and how do you know?
It is not a surd because it simplifies to 5, which is a rational number.
If f(x)=x2-11 and g(x)=(x+2)/5.
What is f(g(3))?
-10
In what US state does Ms. Xiao go to college in?
Minnesota
If a=3.1 to one d.p. and b=4.2 to one d.p., what is the upper bound of a+b?
Upper bound of a is 3.15
Upper bound of b is 4.25
SO... Upper bound of a+b is 7.4
Simplify
2a^-1b^3times4a^-3b^-6
8a^-4b^-3=8/(a^4b^3)
Simplify √180.
6√5
88
In Ms. Xiao's first lesson with this class, what was the topic?
Sequences
The length of a rectangle is 11.1 to one d.p. and the width is 5.2 to one d.p. Find the lower bound for the area of the rectangle.
LB of 11.1 is 11.05
LB of 5.2 is 5.15
SO... LB of area is 56.91
Simplify and evaluate:
(2x^2y)^3/(5x^6y^2)times((x^3)/(2y^2))^3
x^9/(5y^5)
Simplify (√20)/(√50).
(√10)/5
L1 goes through points P(1,2) and K(5,-2). There is a perpendicular line L2 to L1 that goes through the point (1,4). What is the equation of L2?
y=x+3
What are Ms. Xiao's three majors in college?
Mathematics, Education, Asian Studies
If the length of a cereal box is 10cm, the width is 4cm, and the height is 2cm to the nearest cm, what is the upper bound of the volume of the cereal box?
10.5(4.5)(2.5)=118.125cm3
A rectangular pool has some length x2 and a width that is the length cubed times two. If the area of the pool is 13122 cm2, what is the length of the pool?
9cm
Simplify (4√3)/(3+√6).
4√3 - 4√2 or 4(√3 - √2)
L1 goes through points P(-10,2) and K(14,-2). There is a parallel line L2 to L1 that goes through the midpoint of PK. What is the equation of L2?
y=-1/6x+1/3