Algebra Detectives
Solve for X:
4x-9=3x+2
x=11
True or False- every square root is irrational
False
I am an odd number. take away one letter and I become even. what am I?
Seven
If a train goes 60 mi/hr, how far does it go in 2 and half hours?
150 miles
find 2 numvers who product and sum = 13
9&4
If 2x+3=17, what is 3x+4?
19
Between √2 and √3, there is a rational number?
yes
2 fathers and 2 sons sit down to eat 3 tacos-each gets one. how?
Grandfather, Father, Son
sale: 30% off of an $80 shirt and add 8% tax. what is the final price?
$60.48
simplify: (x2 y3)2 / (x3y)
x1y5
The sum of 3 consecutive even numbers is 48. what are they?
14,16,18
Approximate √7 to one decimal place
2.6
You see 3 doors: 1 doubles your money, 1 halves it, and 1 leaves it. you pick one at random. What is your expected outcome?
gain 1/6 of your money
a recipe calls for 3/4 cups of sugar for 12 cookies. how much sugar for 20 cookies?
1 and 1/4 cups
what number doubled and its square root is 35
5
3(x-4)=2x+1 --> find X
X=13
Explain why π^2 is irrational
product of irrationals--> remains irrational
A woman tells you she has 3 children. she tells you that the product of their ages is 36, the sum of their ages is the same as their house number. you walk next door and see the house number but you still can't figure out the ages from that alone. the woman then adds that her oldest plays the piano. what are the childrens ages
2,2,9
A water tank fills at 6 L/min and leaks at 2 L/min. How long will it take to fill 80L?
20 minutes
if 1=3, 2=3, 3=5, 4=4, 5=4- what is 6?
3 (six has 3 letters)
if 5x-4=2(x+8), what is 3x?
36
What is larger: √50 or 7.1
√50=7.07 which is less than 7.1
a number leaves a remainder of 1 when divided by 2,3, and 4. what is the smallest number greater than 1 that fits?
13
you invest $1000 at 5% compound yearly for 3 years, what is the total?
$1157.63
The digits of a 2-digit number add to 11. Reversing the digits makes a number 27 more- what is it?
47 and 74