Flashcards
Thursday, April 17
Chapter 9
Review
Chapter 9 Review
1. The table below shows the areas of a triangle
where the height of the triangle stays the same, but
the base changes. Which expression can be used to
find the area of a triangle that has a height of 4
units and a base of n units?
𝑛
A.
4
4𝑛
B.
2
4
C.
2𝑛
D. 4n
Chapter 9 Review
1. The table below shows the areas of a triangle
where the height of the triangle stays the same, but
the base changes. Which expression can be used to
find the area of a triangle that has a height of 4
units and a base of n units?
𝑛
A.
4
4𝑛
B.
2
4
C.
2𝑛
The area of a
triangle is height
times base divided
ℎ·𝑏
by 2, or 2
D. 4n Answer: B
Chapter 9 Review
2. GRIDDED RESPONSE José used a square
baking pan to make a cake. The length of each side
of the pan was 16 inches. Find the area of the pan
in square inches.
Chapter 9 Review
2. GRIDDED RESPONSE José used a square
baking pan to make a cake. The length of each side
of the pan was 16 inches. Find the area of the pan
in square inches.
A=l·w
A = 16 in · 16 in
A = 256 in²
Chapter 9 Review
3. Janet has a garden in the shape of parallelogram
in her front yard. What is the area of the garden if
it has a base of 10 feet of a height of 4 feet?
F. 20 𝑓𝑡 2
G. 30 𝑓𝑡 2
H. 40 𝑓𝑡 2
I. 50 𝑓𝑡 2
Chapter 9 Review
3. Janet has a garden in the shape of parallelogram
in her front yard. What is the area of the garden if
it has a base of 10 feet of a height of 4 feet?
F. 20 𝑓𝑡 2
G. 30 𝑓𝑡 2
A=l·w
H. 40 𝑓𝑡 2
A = 10 ft · 4 ft
2
I. 50 𝑓𝑡
A = 40 ft²
Answer: H
Chapter 9 Review
4. In the spreadsheet below, a formula applied to
the values in columns A and B results in the values
in column C. What is the formula?
A. C = A – B
B. C = A – 2B
C. C = A + B
D. C = A + 2B
Chapter 9 Review
4. In the spreadsheet below, a formula applied to
the values in columns A and B results in the values
in column C. What is the formula?
A. C = A – B
B. C = A – 2B
C. C = A + B
D. C = A + 2B
Answer: B
Chapter 9 Review
5. SHORT RESPONSE In Mrs. Tucker’s classroom
library, there are 168 fiction and 224 nonfiction
books. What is the ratio of fiction to nonfiction
books in simplest form?
Chapter 9 Review
5. SHORT RESPONSE In Mrs. Tucker’s classroom
library, there are 168 fiction and 224 nonfiction
books. What is the ratio of fiction to nonfiction
books in simplest form?
168 𝑓𝑖𝑐𝑡𝑖𝑜𝑛
224 𝑛𝑜𝑛𝑓𝑖𝑐𝑡𝑖𝑜𝑛
3 𝑓𝑖𝑐𝑡𝑖𝑜𝑛
=4 𝑛𝑜𝑛𝑓𝑖𝑐𝑡𝑖𝑜𝑛
𝟑
𝟒
Chapter 9 Review
6. Which expression gives the area of a triangle
with a base of 8 units and height 3 units?
F. 8 × 3
1
G. (8 × 3)
2
1
H. (8 + 3)
2
I. (8 + 3) + (8 + 3)
Chapter 9 Review
6. Which expression gives the area of a triangle
with a base of 8 units and height 3 units?
F. 8 × 3
A = 𝑏 · ℎ ÷ 2, or
1
b·h
A
=
G. (8 × 3)
2
2
1
H.
2
(8 + 3)
𝐴=
8𝑥3
2
or
1
2
( 8 x 3)
I. (8 + 3) + (8 + 3)
Answer: G
Chapter 9 Review
7. Ted is making three picture frames like the one
shown below. What length of wood does Ted need
for all three picture frames?
1
A. 11 in.
2
3
B. 15 in.
4
1
C. 27 in.
4
3
D. 81 in.
4
Chapter 9 Review
7. Ted is making three picture frames like the one
shown below. What length of wood does Ted need
for all three picture frames?
1
A. 11 in.
2
3
B. 15 in.
4
1
C. 27 in.
4
3
D. 81 in.
4
P =2 𝑏 + 2ℎ
P = 2· 5 34 + 2· 7 78
1
P = 274
Three frames: 8134in
Answer: D
Chapter 9 Review
8. SHORT RESPONSE Lynette is painting a 15-foot
by 10-foot rectangular wall that has a 9-foot by 5foot rectangular window at its center. How many
square feet of wall will she paint?
Chapter 9 Review
8. SHORT RESPONSE Lynette is painting a 15-foot
by 10-foot rectangular wall that has a 9-foot by 5foot rectangular window at its center. How many
square feet of wall will she paint?
A of wall =15· 10 = 150 ft²
A of window = 9· 5 = 45 ft²
Wall minus window
150 ft² - 45 ft² = 105 ft²
Chapter 9 Review
9. The cost of renting a car is shown in the
advertisement. Which of the following equations
can be used to find t, the cost in dollars of the
rental for m miles?
F. t = 0.10m + 25
G. t = 50 + 0.10
H. t = 50(m + 0.10)
I. t = 50 + 0.10m
Chapter 9 Review
9. The cost of renting a car is shown in the
advertisement. Which of the following equations
can be used to find t, the cost in dollars of the
rental for m miles?
F. t = 0.10m + 25
G. t = 50 + 0.10
H. t = 50(m + 0.10)
t = $50 + $0.10 times the
I. t = 50 + 0.10m
number of miles driven.
Answer: I
Chapter 9 Review
10. The area of a triangle is 30 square inches. What
is the length of the base if the height is 6
centimeters?
A. 12 cm
B. 10 cm
C. 5 cm
D. 3 cm
Chapter 9 Review
10. The area of a triangle is 30 square inches. What
is the length of the base if the height is 6
centimeters?
A. 12 cm
A = bh ÷ 2
B. 10 cm
30 = 6b÷ 2
C. 5 cm
30 · 2 = 6b ÷ 2 · 2
60 = 6b
D. 3 cm
60
6𝑏
= 6
6
10 = b
Answer: B
Chapter 9 Review
11. GRIDDED RESPONSE The road sign shows
the distances from the highway exit to certain
businesses. What fraction of a mile is the
restaurant from the exit?
Chapter 9 Review
11. GRIDDED RESPONSE The road sign shows
the distances from the highway exit to certain
businesses. What fraction of a mile is the
restaurant from the exit?
0.65 =
65
100
=
Calculator
.65, F D, =
13
20
Chapter 9 Review
12. For every $5 Marta earns mowing lawns, she
puts $2 in her savings account. How much money
will she have to earn in order to deposit $30 into
her savings account?
F. $6
G. $12
H. $15
I. $75
Chapter 9 Review
12. For every $5 Marta earns mowing lawns, she
puts $2 in her savings account. How much money
will she have to earn in order to deposit $30 into
her savings account?
F. $6
For every $5, $2 goes into savings.
$30
G. $12
She needs to mow 15 lawns ( $2 ) to
H. $15
have $30 in savings.
$5 x 15 lawns = $75
I. $75
Answer: I
Chapter 9 Review
13. EXTENDED RESPONSE Ryan is painting a
mural for his college art final. The mural is shaped
like the figure shown below.
Part A Find the perimeter of the
figure.
Part B Suppose Ryan doubles the
side length of each side, what
happens to the perimeter of the figure? Explain
your reasoning.
Chapter 9 Review
13. EXTENDED RESPONSE Ryan is painting a
mural for his college art final. The mural is shaped
like the figure shown below.
Part A Find the perimeter of the
figure.
P = 2b + 2 h
P = 2· 6 + 2· 10
P = 32 ft²
Chapter 9 Review
13. EXTENDED RESPONSE Ryan is painting a
mural for his college art final. The mural is shaped
like the figure shown below.
Part B Suppose Ryan doubles the
side length of each side, what
happens to the perimeter of the
figure? Explain your reasoning.
Chapter 9 Review
13. EXTENDED RESPONSE Ryan is painting a
mural for his college art final. The mural is shaped
like the figure shown below.
Part B Suppose Ryan doubles the
side length of each side, what
happens to the perimeter of the
figure? Explain your reasoning.
P₁ = 2b + 2 h
P₁ = 2· 6 + 2· 10
P₂ =2· 12 + 2· 20
P₁ = 32 ft²
P₂ = 64 ft²
If you double the sides, you double the perimeter.
Chapter 9 Review
Agenda Notes
Homework–
Homework Practice OAA – CH9a
Due Monday, April 21
Final Exam- Friday, April 25
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