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Kelso Math: Algebra 2B - Unit 1 - Lesson 9

Last updated almost 5 years ago
16 questions
1

Decide whether each number is rational or irrational.

  • \sqrt{0.6}
  • \sqrt \frac{25}{4}
  • \sqrt{4}
  • -3
  • 10
  • \frac{4}{5}
  • \sqrt{10}
  • Rational
  • Irrational
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1

Here are the solutions to some quadratic equations. Select all solutions that are rational.

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1

Solve the equation. Click on the keyboard icon in the answer box to get the "plus or minus" and "square root" signs if needed.

Answer format: x=___ or x=___

1

Are the solutions to #3 rational or irrational?

1

Solve the equation. Click on the keyboard icon in the answer box to get the "plus or minus" and "square root" signs if needed.

Answer format: x=___ or x=___

1

Are the solutions to #5 rational or irrational?

1

Solve the equation. Click on the keyboard icon in the answer box to get the "plus or minus" and "square root" signs if needed.

Answer format: x=___ or x=___

1

Are the solutions to #5 rational or irrational?

1

Solve the equation. Click on the keyboard icon in the answer box to get the "plus or minus" and "square root" signs if needed.

Answer format: x=___ or x=___

1

Are the solutions to #5 rational or irrational?

1

Based on the graph, what are the solutions?

1

Can you tell whether they are rational or irrational? Select the BEST response.

1

Put the steps in order to solving the equation:

1

Are the solutions from #13 rational or irrational?

1

Match each equation to an equivalent equation with a perfect square on one side.

Draggable itemCorresponding Item
x^{2}+9x=\frac{1}{2}
(x-\frac{9}{2})^{2}=\frac{83}{4}
x^{2}+0.1x-0.0005=0
(x-\frac{3}{7})^{2}=\frac{10}{4}
x^{2}+1.21x=6.28
(x-2.5)^{2}=17.25
x^{2}-5x=11
(x-0.05)^{2}=0.002
x^{2}+6.4x-8.9=0
(x-3.2)^{2}=19.14
x^{2}-\frac{6}{7}x=\frac{1}{49}
(x-0.605)^{2}=6.646025
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1

Review from Tri 1: Which quadratic expression is in vertex form?

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