7 practice

Which of the following in an equation?

• 6x + 2x - 14

• 6x + 10 = 4

• 3x + 5c - 23

• 10y - 6

What is the difference between an expression and an equation?

• an expression has variables

• an equation has an equal sign

• an expression has like terms

• they are the same

In this term, 3a²bc, what are the variables?

• 3 and 2
• 3
• 2
• a, b, and c

What is the absolute value?

• The opposite of a number.

• The number that when added together equals 0.

• The distance a number is from zero.

• The number that when added together equals 1.

−x²+2−1+6x²−4x²

• x ²  -1
• x² +1
• 3x² +1
• x ²+3

Write 0.0000456 in scientific notation.

• 0.456 x 10⁵

• 4.56 x 10^-5

• 4.56 x 10⁵

• 45.6 x 10^-5

Write 3.408 × 10^-2 in expanded form.

• 340.8

• 0.03408

• -0.3408

• 3.408

Choose values that are less than 7.

• 6.8 x 10¹

• 6.8 x 10⁰

• 7.3 x 10³

• 7.3 x 10^-1

Zero is a solution for which inequality?

• -3m > 12

• 3m < -12

• 3m > 12

• 3m > -12

What is the arithmatic mean of 1, 2,________,9,10?

• 5.5

• 6

• 7.5

• 10