Page 629 - Algebra 1

20.
(85)
21.
(9 0)
22.
(86)
23.
(86)
Find the length a to the nearest tenth. 17
20
a
5f+6 - f+10 . __
Subtract
Let A = (-5, 3), B = (0, 7), C = (12, 7), and D = (7, 3). Use the distance formula
y
Ithaca, NY
Athens, PA
New
Pennsylvania
Yo
rk
x
24.
(87)
25.
(38)
26.
(79)
27.
(82)
f 2 + 7f - 8 f 2 + 7f - 8
to determine whether ABCD is a parallelogram.
Geography Ithaca, New York is almost directly west of Oneonta, New York and directly north of Athens, Pennsylvania. The three cities form a triangle that is nearly a right triangle. Use the distance formula to estimate the distance from Athens to Oneonta. Each unit on the grid represents 5 miles.
Oneonta, NY
5
5
Error Analysis Two students factor the polynomial (3x2 + 6) - (4x3 + 8x). Which student is correct? Explain the error.
Probability A bag has 2x + 1 red marbles, 3x blue marbles, and x + 2 green marbles. What is the probability of picking a red marble?
Multi-Step A toolbox is 2 feet high. Its volume is represented by the expression 2x2 -8x+6.
a. Factor the expression completely.
b. Identify the expressions that represent the length and width of the toolbox. Hardiness Zones The state of Kansas falls into USDA hardiness zones 5b and
6a. This means that plants in these zones must be able to tolerate an average minimum temperature range greater than or equal to -15°F, and less than -5°F. Write an inequality to represent the temperature range of the hardiness zones in Kansas.
Student A
3(x2 +2)-4x(x2 -2) (3 - 4x)(x2 - 4)
Student B
3(x2 +2)-4x(x2 +2) (3 - 4x)(x2 + 2)
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Saxon Algebra 1