Search results with tag "Big ideas learning"
8.4 Samples and Populations - Big Ideas Learning
www.bigideasmath.comsample, p. 370 Samples and Population A population is an entire group of people or objects. A sample is a part of the population. EXAMPLE 1 Identifying a Population and a Sample An agency wants to know the opinions of Florida residents on the construction of a new road. The agency surveys 800 residents. Identify the population and the sample.
7.1 Volumes of Prisms - Big Ideas Learning
www.bigideasmath.com300 Chapter 7 Volumes of Solids 7.1 Lesson Volume of a Prism Words The volume V of a prism is the product of the area of the base and the height of the prism. area of base, B height, h height, h area of base, B Algebra V = Bh Key Vocabulary volume, p. 300 Study Tip The area of the base
6.3 Surface Areas of Cylinders - Big Ideas Learning
www.bigideasmath.com264 Chapter 6 Surface Areas of Solids 6.3 Lesson Area, A = πr2 Circumference, C = 2πr Radius, r The diagram reviews some important facts for circles. Surface Area of a Cylinder Words The surface area S of a cylinder is the sum of the areas of the bases and the lateral surface. Algebra =S 2π r 2 + 2π rh Area of
B.1 Simple and Compound Interest - Big Ideas Learning
www.bigideasmath.comA12 Appendix B Financial Literacy Lesson Tutorials B.1 Lesson Key Vocabulary compound interest, p. A13 Balance in a Simple Interest Account The balance B of an account that earns simple interest is Remember B = P(1 + rt). Interest is money paid or earned for the use of money. The principal is the amount of money
7.4 Volumes of Cones - Big Ideas Learning
www.bigideasmath.comYou must answer a trivia question before the sand in the timer falls to the bottom. The sand falls at a rate of 50 cubic millimeters per second. How much time do you have to answer the question? Use the formula for the volume of a cone to fi nd the volume of the sand in the timer. V = 1 — 3 Bh Write formula. = 1 — 3 π (10)2(24) Substitute.
5.5 Parallel Lines and Transversals - Big Ideas Learning
www.bigideasmath.comSection 5.5 Parallel Lines and Transversals 215 EXAMPLE 2 Using Corresponding Angles Use the fi gure to fi nd the measures of the numbered angles. ∠1: ∠1 and the 75° angle are vertical angles. They are congruent. So, the measure of ∠1 is 75°. ∠2 and ∠3: The 75° angle is supplementary to both ∠2 and ∠3. 752 =° 180 + ∠° Defi nition of supplementary angles
Medians and Altitudes of Triangles - Big Ideas Learning
static.bigideasmath.comSection 6.3 Medians and Altitudes of Triangles 321 Finding the Centroid of a Triangle Find the coordinates of the centroid of RST with vertices R(2, 1), S(5, 8), and T(8, 3). SOLUTION Step 1 Graph RST. Step 2 Use the Midpoint Formula to fi nd the midpoint V of RT — and sketch median SV — V ( 2 — + 8 2 1 + 3 — 2
9.3 Input-Output Tables - Big Ideas Learning
www.bigideasmath.comFigure 1 Figure 2 Figure 3 Figure 4 2 ACTIVITY: Using a Function Table. Section 9.3 Input-Output Tables 379 Work with a partner. Copy and complete a sales tax table for each of the ... hourly times as inputs, and times where you live as outputs. Write a function rule for the data. 16. Write an equation with the same outputs as y = 2x + 3 for x ...
9.4 Independent and Dependent Events - Big Ideas Learning
www.bigideasmath.com406 Chapter 9 Probability 9.4 Lesson Two events are independent events if the occurrence of one event does not affect the likelihood that the other event will occur. Two events are dependent events if the occurrence of one event does affect the likelihood that the other event will occur. EXAMPLE 1 Identifying Independent and Dependent Events Tell whether the events are …
Dividing Decimals - Big Ideas Learning
www.bigideasmath.comDividing Decimals by Decimals Words Multiply the divisor and dividend by 10, 100, or 1000 to make the divisor a whole number. Then place the decimal point in the quotient and divide as you would with whole numbers. 3.8 Numbers 1.2 )‾ 4.56 12 ) 45.6 Place the decimal point above the decimal point in the dividend 45.6. Multiply each number by 10.
Multiplying Mixed Numbers - Big Ideas Learning
www.bigideasmath.com2 2. 3 — 5 × 2 1 — 6 3. 1 — 4 × 4 1 — 5 4. 2 — 7 × 3 3 — 4 2.4 Lesson 64 Chapter 2 Multiplying and Dividing Fractions Multiplying Mixed Numbers Write each mixed number as an improper fraction. Then multiply as you would with fractions. EXAMPLE 1 Using the Distributive Property Rewrite 2 3 — 4 as the sum 2 + 3 — 4. EXAMPLE 2 ...
Completing the Square - Big Ideas Learning
static.bigideasmath.com114 Chapter 3 Quadratic Equations and Complex Numbers Solving ax2 + bx + c = 0 when a ≠ 1 Solve 3x2 + 12x + 15 = 0 by completing the square. SOLUTION The coeffi cient a is not 1, so you must fi rst divide each side of the equation by a. 3x2 + 12x + 15 = 0 Write the equation. x2 + 4x + 5 = 0 Divide each side by 3. x2 + 4x = −5 Write left side in the form x 2 + bx. =x2 + 4x + 4 …
3.4 Solving Real-Life Problems - Big Ideas Learning
www.bigideasmath.comSection 3.4 Solving Real-Life Problems 127 Work with a partner. Write a story that uses the graph of a line. In your story, interpret the slope of the line, the y-intercept, and the x-intercept. Make a table that shows data from the graph. Label the axes of the graph with units. Draw pictures for your story. 2 ACTIVITY: Writing a Story Work with a partner.
6.2 Surface Areas of Prisms - Big Ideas Learning
www.bigideasmath.com260 Chapter 6 Surface Areas of Solids 5 m 5 m 7 m 6 m 4 m 9 +(- 6 )= 3 3 +(- 3 )= 4 +(- 9 )= 9 +(- 1 )= Draw a net for the prism. Then fi nd the surface area. 6. 5 in. 4 in. 3 in. 7. 3 cm 5 cm 4 cm 5 cm 8. 7 m 6 m 3 m Find the surface area of the prism. 9. 1 ft 5 ft 10 ft 10. 3 cm 6 cm 9 cm 11. 5 yd 4 yd 2 yd 12. 2.2 ft 3 ft 1 ft 2 ft 13. 14.2 ...
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