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Core Connections Integrated II, 2015
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Core Connections Integrated II, 2015 View details
1. Section 7.1
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Exercise 11 Page 377

Practice makes perfect
a We want to find the number that lies exactly halfway between the two given numbers. Let's calculate the mean of the numbers — the result will be our answer!
Mean=Sum of values/Number of values
SubstituteValues

Substitute values

Mean = 9 + 15/2
AddTerms

Add terms

Mean = 24/2
CalcQuot

Calculate quotient

Mean = 12
The number 12 is exactly halfway between 9 and 15.
b Now let's find the middle number, or the mean, of 3 and 27.
Mean=Sum of values/Number of values
SubstituteValues

Substitute values

Mean = 3 + 27/2
AddTerms

Add terms

Mean = 30/2
CalcQuot

Calculate quotient

Mean = 15
The number 15 is exactly halfway between 3 and 27.
c Finally, let's find the number halfway between 10 and 21.
Mean=Sum of values/Number of values
SubstituteValues

Substitute values

Mean = 10 + 21/2
AddTerms

Add terms

Mean = 31/2
CalcQuot

Calculate quotient

Mean = 15.5
The number 15.5 is exactly halfway between 10 and 21.
Subchapter links expand_more
arrow_right 7.1.1 Explore–Conjecture–Prove p.376-379
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Explore–Conjecture–Prove 10 (Page 377)
Explore–Conjecture–Prove 11 (Page 377)
Explore–Conjecture–Prove 12 (Page 377)
Explore–Conjecture–Prove 13 (Page 377)
Explore–Conjecture–Prove 14 (Page 378)
Explore–Conjecture–Prove 15 (Page 378)
Explore–Conjecture–Prove 16 (Page 378)
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Explore–Conjecture–Prove 18 (Page 379)
Explore–Conjecture–Prove 19 (Page 379)
Explore–Conjecture–Prove 20 (Page 379)
Explore–Conjecture–Prove 21 (Page 379)
Explore–Conjecture–Prove 22 (Page 379)
arrow_right 7.1.2 Properties of Rhombi p.382-383
Properties of Rhombi 26 (Page 382)
Properties of Rhombi 27 (Page 382)
Properties of Rhombi 28 (Page 382)
Properties of Rhombi 29 (Page 382)
Properties of Rhombi 30 (Page 382)
Properties of Rhombi 31 (Page 383)
Properties of Rhombi 32 (Page 383)
arrow_right 7.1.3 Two-Column Proofs p.387-388
Two-Column Proofs 39 (Page 387)
Two-Column Proofs 40 (Page 387)
Two-Column Proofs 41 (Page 387)
42
Two-Column Proofs 43 (Page 388)
Two-Column Proofs 44 (Page 388)
Two-Column Proofs 45 (Page 388)
arrow_right 7.1.4 More Geometric Proofs p.390-391
More Geometric Proofs 49 (Page 390)
More Geometric Proofs 50 (Page 391)
More Geometric Proofs 51 (Page 391)
More Geometric Proofs 52 (Page 391)
More Geometric Proofs 53 (Page 391)
More Geometric Proofs 54 (Page 391)
More Geometric Proofs 55 (Page 391)
arrow_right 7.1.5 Using Similar Triangles to Prove Theorems p.395-396
Using Similar Triangles to Prove Theorems 60 (Page 395)
Using Similar Triangles to Prove Theorems 61 (Page 395)
62
Using Similar Triangles to Prove Theorems 63 (Page 395)
Using Similar Triangles to Prove Theorems 64 (Page 395)
65
Using Similar Triangles to Prove Theorems 66 (Page 396)