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Questions (641)
2.
Find the value of n such that x2 – 11x + n is a perfect square trinomial. 121
1 answer
33 views
1.
Solve the equation by completing the square. Round to the nearest hundredth if necessary. x2 – x – 7 = 0 –6.75, 7.75
1 answer
37 views
19.
Solve the equation using the zero-product property. −8n(10n − 1) = 0 n = 0 or n = n = 0 or n = n = or n = mc003-3.jpg n =
1 answer
36 views
18.
The area of a playground is 336 yd2. The width of the playground is 5 yd longer than its length. Find the length and width of
1 answer
39 views
17.
Suppose you have 52 feet of fencing to enclose a rectangular dog pen. The function , where x = width, gives you the area of
1 answer
51 views
10.
Find the equation of the axis of symmetry and the coordinates of the vertex of the graph of the function y = 4x2 + 5x – 1.
1 answer
59 views
9.
Solve the equation by factoring. c2 − 4c = 0 c = 0 or c = 4 c = 1 or c = – c = 0 or c = –4 c = 0 or c =
1 answer
26 views
8.
How is the graph of y = 5x2 − 4 different from the graph of y = 5x2? It is shifted 4 units to the right. It is shifted 4
1 answer
26 views
7.
Solve x2 – 4 = 5 by graphing the related function. There is one solution: 1 There are two solutions: ±1. There are no real
1 answer
27 views
6.
Tasha is planning an expansion of a square flower garden in a city park. If each side of the original garden is increased by 7
1 answer
36 views
4.
Which of the quadratic functions has the narrowest graph? y = −2x2 y = −3x2
1 answer
28 views
3.
Solve the equation using square roots. 3x2 – 27 = 0 ±3 ±9 no real number solutions 3
1 answer
26 views
2.
A ball is thrown into the air with an upward velocity of 24 ft/s. Its height h in feet after t seconds is given by the
1 answer
51 views
1.
A ball is thrown into the air with an upward velocity of 36 ft/s. Its height h in feet after t seconds is given by the
1 answer
25 views
9.
Factor the expression. 3x3 + 3x2 + x + 1 x(3x2 + x + 1) 3x2(x + 1) (x + 3)(3x2 – 1) (x + 1)(3x2 + 1)
1 answer
60 views
8.
Factor the expression. 8g3 + 10g2 – 12g – 15 (2g2 – 5)(4g + 3) (2g2 + 5)(4g – 3) (2g2 – 3)(4g + 5) (2g2 + 3)(4g –
1 answer
32 views
7.
Factor the expression. d2 − 14d + 49 (d − 7)(d +7) (d + 7)2 (d − 7)2 (d − 49)(d − 1)
1 answer
30 views
6.
Factor the expression. k2 – 16h2 (k + 4h)(k – 4h) (k + 4h)(k + 4h) (k – 4h2)(k + 4) h2(k + 4)(k – 4)
1 answer
23 views
5.
Factor the expression. 20x2 + 22x − 12 2(5x + 4)(2x – 3) (10x – 2)(4x + 3) 2(5x – 2)(2x + 3) 2(5x + 2)(2x – 3)
1 answer
38 views
4.
Factor the expression. 4b2 + 28b + 49 (2b − 7)2 (−2b − 7)2 (2b + 7)2 (−2b + 7)2
1 answer
25 views
3.
Factor the expression. 50k3 – 40k2 + 75k – 60 (2k2 + 15)(5k – 20) 5(2k2 + 3)(5k – 4) 5(2k2 – 3)(5k + 4) (10k2 –
1 answer
31 views
13.
Factor the expression. d2 − 8d + 16 (d − 4)(d + 4) (d − 16)(d − 1) (d − 4)2 (d + 4)2
1 answer
25 views
12.
Factor the expression. 12d2 + 4d – 1 (6d + 1)(2d + 1) (6d – 1)(2d + 1) (6d – 1)(2d – 1) (6d + 1)(2d – 1)
1 answer
19 views
11.
Factor the expression. 21x2 + 55x + 14 (3x – 7)(7x + 2) (3x – 7)(7x – 2) (3x + 7)(7x + 2) (3x + 7)(7x – 2)
1 answer
31 views
10.
Factor the expression. 4x2 – 81y2 (2x + 9y)2 (2x – 9y)2 (2x + 9y)(2x – 9y) (2x + 9)(2x – 9)
1 answer
22 views
9.
Factor by grouping. 3x2 + 7x – 6 (3x – 2)(x – 3) (3x + 2)(x – 3) (x + 3)(3x + 2) (3x – 2)(x + 3)
1 answer
22 views
8.
Factor the expression. 10g3 + 15g2 – 12g – 18 (5g2 – 6)(2g + 3) (5g2 + 6)(2g – 3) (5g2 + 3)(2g – 6) (5g2 – 3)(2g +
1 answer
31 views
4.
Factor the expression. w2 – 14w + 24 (w – 12)(w + 2) (w + 2)(w + 12) (w – 12)(w – 2) (w – 1)(w – 24)
1 answer
29 views
17.
Find the product. (n3 + 5)(n3 – 5) n6 – 10n3 + 25 n6 – 125 n6 – 10n3 – 25 n6 – 25
1 answer
19 views
16.
Find the GCF of the terms of the polynomial. 18x4 – 27x3– 36x2 8x 18x2 9x 9x2
1 answer
27 views
13.
Match the expression with its name. 3x3 – 3x + 3 not a polynomial fourth-degree monomial quadratic binomial cubic trinomial
1 answer
46 views
12.
The Johnsons want to cover their backyard with new grass. Their backyard is rectangular, with a length of 3x – 5 feet and a
1 answer
47 views
5.
Find the degree of the monomial. 7m6n5 5 7 11 6
1 answer
29 views
4.
Write the polynomial in standard form. Then name the polynomial based on its degree and number of terms. 6 – 2x3 – 3x +
1 answer
69 views
15.
Suppose an investment of $6,600 doubles in value every 8 years. How much is the investment worth after 40 years? $528,000
1 answer
44 views
14.
Find the common ratio of the sequence. –164, –82, –41, –20.5, . . . 82 –82 2
1 answer
36 views
13.
Suppose the population of a town is 2,700 and is growing 4% each year. Write an equation to model the population growth.
1 answer
47 views
12.
Suppose a laboratory has a 31 g sample of polonium-210. The half-life of polonium-210 is about 138 days. How many half-lives
1 answer
57 views
11.
Suppose an investment of $8,200 doubles in value every 7 years. How much is the investment worth after 28 years? $65,600
1 answer
84 views
10.
A boat costs $12,050 and decreases in value by 12% per year. How much will the boat be worth after 9 years? $3,355.94
1 answer
115 views
9.
Find the common ratio of the sequence. –125, –25, –5, –1, . . . 100 5 –100
1 answer
30 views
8.
Identify the initial amount a and the growth factor b in the exponential function. f(x) = 620 ∙ 7.8x 620, 7.8 620, 7.8x 7.8,
1 answer
64 views
7.
You drop a ball from a height of 0.5 meter. Each curved path has 52% of the height of the previous path. a. Write a rule for
1 answer
46 views
6.
Find the first, fourth, and eighth terms of the sequence. A(n) = −5 ∙ 3x − 1 1; –3,375; –170,859,375 –45;
1 answer
35 views
5.
A scientist counts 35 bacteria present in a culture and finds that the number of bacteria triples each hour. The function y =
1 answer
65 views
4.
Evaluate the function rule for the given value. f(x) = 3x for x = –4 –12 –64
1 answer
32 views
3.
Identify the initial amount a and the growth factor b in the exponential function. A(x) = 30 ∙ 8.3x 8.3x, 30 30, 8.3x 8.3,
1 answer
55 views
7.
Radio signals travel at a rate of 3 × 108 meters per second. How many seconds will it take for a radio signal to travel from
1 answer
72 views
4.
Chase scored 14 points on Monday, and he doubled his score each day thereafter. How many points did he score on Thursday? 56
1 answer
57 views
2.
Complete the equation, by supplying the missing exponent. A virus has a volume of approximately 4.7 x 10−14 cubic
1 answer
34 views
1.
Evaluate 8x2y−2 for x = –1 and y = 2. 32 2 8(−2)0
1 answer
37 views
10.
Radio signals travel at a rate of 3 × 108 meters per second. How many seconds will it take for a radio signal to travel from
1 answer
56 views
8.
Radio signals travel at a rate of 3 × 108 meters per second. How many seconds will it take for a radio signal to travel from
1 answer
47 views
Simplify the expression.(35)2
A. 610 B. -16 C. 925
1 answer
25 views
The speed of computer is measured in number of calculations per picosecond. There are 3.6 × 1015 picoseconds per hour. Use
1 answer
21 views
25.
Simplify the expression. (−8.6)0
1 answer
18 views
24.
Simplify the expression. 7x−8 ∙ 6x3
1 answer
22 views
23.
Write the number in standard notation. 5 x 105
1 answer
27 views
22.
Simplify the expression. (4g10)4
1 answer
15 views
19.
Simplify the expression. (p9)−2
1 answer
20 views
18.
Simplify the expression. Write the answer using scientific notation. Astronomers measure large distances in light-years. One
1 answer
42 views
16.
Simplify the expression. (4)−2
1 answer
20 views
15.
Simplify the expression. 3k/8
1 answer
19 views
14.
Simplify the expression. (x9)0(x7)2 1 x14 x126 x18
1 answer
46 views
13.
Simplify the expression. 6/7c
1 answer
28 views
12.
Simplify the expression. 7a−5b3
1 answer
60 views
11.
Simplify the expression. 3−9 ∙ 36 ∙ 36 33 273 3−324 93
1 answer
23 views
10.
Simplify the expression. (−h4)5 −h9 −h20 h1 h20
1 answer
22 views
9.
Simplify the expression. (k2)4 k8 k6 2k8 k16
1 answer
69 views
8.
Last year a large trucking company delivered 9.5 x 105 tons of goods with an average value of $20,000 per ton. What was the
1 answer
43 views
7.
Simplify the expression. −(10)−2
1 answer
31 views
6.
Simplify the expression. 916 81
1 answer
24 views
5.
Simplify the expression. a5 ∙ 3b9 ∙ 6a 18a6b9 10a6b9 18ab15 18a45b9
1 answer
70 views
4.
Chase scored 11 points on Monday, and he doubled his score each day thereafter. How many points did he score on Friday? 88
1 answer
47 views
3.
Write the number in standard notation. 4.16 x 10−5 0.0000416 –208 0.00000416 0.000416
1 answer
24 views
2.
Simplify the expression. Write the answer using scientific notation. 0.6(6.5 x 10 -5 3.9 x 10−4 3.9 x 10−6 7.1 x 10−5
1 answer
45 views
1.
Simplify the expression. Write the answer using scientific notation. (6.2 x 1011 24.8 x 1022 2.48 x 1012 24.8 x 1011 1.02 x
1 answer
64 views
1.
Simplify the expression. Write the answer using scientific notation. 24.8 x 1022 2.48 x 1012 24.8 x 1011 1.02 x 1012
1 answer
54 views
15.
Solve the system using elimination. x + 2y = –6 3x + 8y = –20 (–1, –4) (–4, 4) (–4, –1) (3, 1)
1 answer
18 views
14.
What is the solution of the system of equations? y = –2x + 5 y = –2x + 20 (1, 3) infinitely many solutions no solution
1 answer
22 views
13.
You have $39 to spend at the music store. Each cassette tape costs $5 and each CD costs $11. Write a linear inequality that
1 answer
35 views
12.
Suppose you are determining the growth rate of two species of plants. Species A is 12 cm tall and grows 2 cm per month.
1 answer
35 views
11.
What is the solution of the system of equations? y = –5x + 6 y = –3x – 4 (–1, –1) (–1.25, 12.25) (5, –19)
1 answer
13 views
10.
Solve the system using elimination. 3x – y = 28 3x + y = 14 (–4, 8) (–7, 7) (8, –4) (7, –7)
1 answer
18 views
9.
You have $45 to spend at the music store. Each cassette tape costs $5 and each CD costs $12. Write a linear inequality that
1 answer
31 views
8.
Solve the system of equations using substitution. y = 2x – 10 y = 4x – 8 (–1, –12) (3, 4) (–4, –17) (3, –4)
1 answer
21 views
7.
Find a solution to the following system of equations. −2x + y = −3 −x + 2y = 3 (–21, –9) (3, 3) (0, 2) (–3, –9)
1 answer
17 views
6.
Write the following inequality in slope-intercept form. −6x + 3y ≥ −45 y ≤ 2x − 15 y ≥ 2x + 15 y ≥ 2x − 15 y
1 answer
24 views
5.
Find a solution to the following system of equations. −5x + y = −5 −4x + 2y = 2 (–8, –15) (0, 1) (2, 5) (–2,
1 answer
15 views
4.
Solve the system using elimination. 5x = –25 + 5y 10y = 42 + 2x (5, 10) (–1, 4) (–1, 2) (4, –1)
1 answer
29 views
2.
You have $44 to spend at the music store. Each cassette tape costs $10 and each CD costs $12. Write a linear inequality that
1 answer
35 views
1.
Solve the system of equations using substitution. 3x + 2y = 7 y = –3x + 11 (5, –4) (6, –3) (6, –7)
1 answer
21 views
39.
The third stage of digestion is absorption, which begins when food enters the _____. esophagus small intestine large
1 answer
54 views
38.
What is another name for a flowering plant? polypodiophyte gymnosperm angiosperm bryophyte
1 answer
40 views
37.
Which system carries food and oxygen to cells? digestive respiratory nervous circulatory
1 answer
24 views
36.
Cnidarians such as jellyfish have radial symmetry. How are the body parts of cnidarians arranged? like layers in a stack as
1 answer
52 views
35.
What form of waste cannot be recycled to make new products? paper waste plastic waste metal waste food waste
1 answer
66 views
34.
How does the top level of an energy pyramid compare to the bottom level of that energy pyramid? It contains the least amount
1 answer
57 views
33.
Darwin noticed that birds that were good at finding scarce food in the winter had a better chance of surviving and producing
1 answer
50 views
32.
What is coordinated stasis? a theory that new species appear only after catastrophic environmental changes a pattern in which
1 answer
42 views
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