The Number System
This number is the square root of 100
What is 10.
130
What is 1.
3x+7x is equal to
What is 10x
9+8-7
What is 10.
Which of these equations represent functions where x is the input and y is the output?
x=2
y=2
y=2x
x=2y
x+y=2
y=2x and x=2y
2/5 is equal to this number as a decimal
What is 0.4
7-2
1/72 or 1/49
Solve the expression
3a+4b+2a-2b
What is 5a+2b
48 ÷ (4 + 4)
What is 6
Which of these equations define y as a nonlinear function of x?
y=2x+52
y=5x-3
y=2x3-1
What is 2x3-1
The fraction 5/9 is a repeating or terminating decimal
What is repeating decimal
The solution to this expression.
-8(b+3)
What is -8b-24
Solve the expression.
1/2(6-4x+2x)
3-1x or 3-x
40 ÷ 4 − (5 − 3)
What is 8.
Which equation has both 5 and -5 as possible values of y.
y2=25
y2=10
-y2=-10
What is y2=25
On a number line, the square root of 17 falls between these two numbers
What is 4 and 5.
An expression equivalent to
1/4(8-6x+12)
What is -3/2x+5
This is the solution to this expression.
7(5n-8)+6(4+6n)
What is 71n-32
(8 + 5) × 35/5 + 6
What is 97.
Which equation has infinitely many solutions?
5x+10=6x-20 or 6(x+3)=6x+18
6(x+3)=6x+18
Error Analysis
|y-1|=5y+11
Step 1: Add 1 to both sides
Step 2: Subtract 5y from both sides
Step 3: Divide both sides by -6
Step 4: y=-2
What is Step 3
A football team lost 24 yards on one play, then gained 3 yards on the next play. How many total yards did the team gain on the two plays?
This represent 24/3. True or False?
False
Chris made at least one error as she found the value of this expression.
2(-20)+3(5/4(-20))+ 5(2/5(50))+4(50)
Step 1: 2(-20)+ 3(-25) +5(20)+ 4(50)
Step 2: (3+2)(-20+ -25)+(5+4)(20+50)
Step 3: 5(-45)+ 9(70)
Step 4: -225+630
Identify the step in which Chris made her first error.
What is Step 2.
This expression does not simplify to a value of 10.
A. 52-5x3
B. 2+16x0.5
C. 62-52+12
What is C
A. Find the value of two numbers if their sum is 12 and their difference is 4
B. The difference of two numbers is 3. Their sum is 13. Find the numbers.
A. What is 4 and 8
B. What is 5 and 8