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Questions (5)
A 200 MPa pressure is applied to a copper sphere with a radius of 2.0 cm. If the bulk modulus of copper is 130 GPa, calculate
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For the following two numbers, find two factors of the first number such that their product is the first number and their sum is
3 answers
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How many hydrogen atoms are present in 32 grams of methane?
5 answers
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what can I do with these subject?
2 answers
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20x-x^2
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Answers (87)
Solve the following equation. Show all your work. x x − 2 + x − 1 x + 1 = − 1
Solve the following equation. Show all your work. x x − 2 + x − 1 x + 1 = − 1
Divide. (10x2 – 13x + 12) ÷ (5x + 1) A. 2x minus 3 plus 15 over 5x plus 1 B. 2x minus 5 plus 6 over 5x plus 1 C. 2x minus 3 minus 15 over 5x plus 1 D. 2x + 12
What are the minimum, first quartile, median, third quartile, and maximum of the data set? 40, 7, 2, 35, 12, 23, 18, 28 A. minimum = 2 first quartile = 7 median = 20.5 third quartile = 35 maximum = 40 B. minimum = 2 first quartile = 7 median = 18 third
The number of hours a group of contestants spends preparing for a quiz show are listed below. What is the frequency table that represents that data? 77 38 8 43 9 19 57 5 9 69 9 15 72 32 75 80 92 A. time chartZero to 9 hours has a frequency of 5. Ten to 19
The time t required to drive a certain distance varies inversely with the speed, r. If it takes 4 hours to drive the distance at 40 miles per hour, how long will it take to drive the same distance at 55 miles per hour? A. about 2.91 hours B. about 160.00
Solve the equation using the Zero-Product Property. 6x(3x + 1) = 0 A. x = 0, one-third B. x = 0, 1 C. x = 0, negative one-third D. x = 0, –1
Solve the equation using the Zero-Product Property. 6x(3x + 1) = 0 A. x = 0, one-third B. x = 0, 1 C. x = 0, negative one-third D. x = 0, –1
Solve the equation using the Zero-Product Property. 6x(3x + 1) = 0 A. x = 0, one-third B. x = 0, 1 C. x = 0, negative one-third D. x = 0, –1
A catapult launches a boulder with an upward velocity of 148 ft/s. The height of the boulder, h, in feet after t seconds is given by the function h = –16t2 + 148t + 30. How long does it take the boulder to reach its maximum height? What is the
Graph the function and identify the domain and range. y = –6x2 A. graph domain: (–∞,∞) range: y ≤ 0 B. graph domain: (–∞,∞) range: y ≥ 0 C. graph domain: (–∞,∞) range: y ≥ 0 D. graph domain: (–∞,∞) range: y ≥ 0 7 / 32
The area of a rectangular painting is given by the trinomial x2 – 5x – 36. What are the possible dimensions of the painting? Use factoring. A. (x + 9) and (x – 4) B. (x + 9) and (x + 4) C. (x – 9) and (x – 4) D. (x – 9) and (x + 4)
Critical Thinking The poems in this unit express appreciation for A. the poor. B. the value of work. C. things of value. D. the question of value.
Multiple Choice Critical Thinking The poems in this unit express appreciation for A. the poor. B. the value of work. C. things of value. D. the question of value.
Critical Thinking The poems in this unit express appreciation for
Multiply. (3x + 5)(3x – 5) A. 9x2 – 30x – 25 B. 9x2 + 30x + 25 C. 9x2 – 25 D. 9x2 + 25
Multiply. (3x + 5)(3x – 5) A. 9x2 – 30x – 25 B. 9x2 + 30x + 25 C. 9x2 – 25 D. 9x2 + 25
Multiply. Give your answer in standard form. (2n2 – 7n + 2)(3n + 1) A. 6n3 – 23n2 – n + 2 B. 6n3 – 19n2 – n + 2 C. 6n3 – 19n2 – 13n + 2 D. 6n3 + 23n2 + 13n + 2
Danielle has decided to raise rabbits but has been warned that the number of rabbits she will have will grow very quickly. Danielle started out with 15 rabbits and the function y = 15 • 1.8x models the number of rabbits she will have after x months.
What is the order of the numbers from least to greatest? A = 6.2 × 10–5 B = 12.3 × 10–7 C = 5.2 × 103 D = 3.7 × 10–5 A. D < C < A < B B. B < D < A < C C. D < C < A < B D. B < A < C < D
Anita can clean a typical pool in 8 hours. Chao can clean a typical pool in 6 hours. How long should it take Anita and Chao working together to clean a typical pool? Show all your work. Leave your final answer as an integer or reduced fraction.
Anita can clean a typical pool in 8 hours. Chao can clean a typical pool in 6 hours. How long should it take Anita and Chao working together to clean a typical pool? Show all your work. Leave your final answer as an integer or reduced fraction.
Do the data in the table represent a direct variation or an inverse variation? Write an equation to model the data in the table. x 1 3 5 10 y 4 12 20 40 A. direct variation; y equals 4 times x B. direct variation; y equals one-fourth x C. inverse
What is the solution to the equation The quotient 1 over x minus the quotient 6 over x squared equals negative 12? A. x equals three fourths or x equals negative two thirds B. x equals three fourths or x equals two thirds C. x equals negative three fourths
Simplify into one fraction. start fraction 9 over x minus 1 end fraction plus start fraction 5 over x plus 4 end fraction A. start fraction 14 over 2 x plus 3 end fraction B. start fraction 14 x plus 31 over left parenthesis x minus 1 right parenthesis
Divide. Fraction 1: The quantity x squared plus 6 times x plus 9 over the quantity x minus 1. Fraction 2: the quantity x squared minus 9 over the quantity x squared minus 2 times x plus 1. Find Fraction 1 over Fraction 2. A. The quantity x plus 3 times the
Divide. The quantity x squared minus 4 over the quantity x minus 8, all divided by the quantity x minus 2 A. The quantity x minus 2 times the quantity x plus 2 divided by the quantity x minus 8 B. The quantity x minus 8 over the quantity x plus 2 C. The
Multiply. The quotient of the quantity x minus 5 over the quantity 4 times x plus 8 times the quantity 12 times x squared plus 32 times x plus 16 A. The quantity 3 times x plus 2 over 4 times the quantity x minus 5 B. The quantity x minus 5 times the
Multiply. The quotient of the quantity x minus 5 over the quantity 4 times x plus 8 times the quantity 12 times x squared plus 32 times x plus 16 A. The quantity 3 times x plus 2 over 4 times the quantity x minus 5 B. The quantity x minus 5 times the
Simplify. The quotient 7 over 2 times a times the quotient 5 over a squared A. 35 over 2 times a squared, where a does not equal 0 B. 35 over 2 times a squared C. 12 over 2 times a cubed, where a does not equal 0 D. 35 over 2 times a cubed, where a does
Simplify. The quantity x squared plus 3 times x minus 4 over the quantity x plus 4 A. 1 over the quantity x minus 4, where x does not equal 4 B. x minus 4 C. x minus 1, where x does not equal 1 D. x minus 1, where x does not equal negative 4
Simplify. The quantity x minus 2 over the quantity x squared plus 4 times x minus 12 A. 1 over the quantity x plus 6, where x does not equal negative 6 B. 1 over the quantity x plus 6, where x does not equal negative 6, 2 C. 1 over the quantity x plus 2,
Simplify. negative 12 times x to the fourth power over the quantity x to the fourth power plus 8 times x to the fifth power A. negative 12 over the quantity 1 plus 8 times x, where x does not equal negative one eighth B. negative 12 over the quantity 1
Simplify. start fraction x over 4 x plus x squared end fraction A. one-fourth B. start fraction 1 over 4 plus x end fraction; where x not equals negative 4 comma 0 C. start fraction 1 over 4 plus x end fraction; where x not equals negative 4 D. start
Simplify. left parenthesis negative 24 x cubed plus 18 x plus 6 right parenthesis divided by left parenthesis 6 x plus 3 right parenthesis A. negative 4 x squared plus 2 x minus 2 B. 4 x squared minus 2 x plus 2 C. 4 x squared plus 2 x minus 2 D. negative
Task 3 Suppose you are having a birthday party at the local bowling alley. You are trying to figure out how many people you can afford to invite. a. The number of guests you can invite to your party varies inversely with the price per bowler at the alley.
John, Rick, and Molli paint a room together. a. Pick a reasonable amount of time in which the three friends can paint the room together. Also pick a reasonable amount of time in which John can paint the room alone and a reasonable amount of time in which
Volume and surface area are often compared by manufacturers in order to maximize how much of something can go inside of a package (volume) while keeping how much material is required to create the package (surface area) low. Pick a product that might be
Volume and surface area are often compared by manufacturers in order to maximize how much of something can go inside of a package (volume) while keeping how much material is required to create the package (surface area) low. Pick a product that might be
Volume and surface area are often compared by manufacturers in order to maximize how much of something can go inside of a package (volume) while keeping how much material is required to create the package (surface area) low. Pick a product that might be
Which of the following do Rwanda and Darfur have in common? A. Colonial rule inspired peaceful revolution. B. Democratic governments secured prosperity. C. Sectarian tensions led to genocide. D. Strong military regimes provided for order and stability.
How did post-1979 Iran differ from Egypt, Syria, and Iraq? A. It established a government independent of colonial powers. B. It formed a democratic republic. C. It imposed theocratic rule. D. It relied on an autocratic military regime.
How has OPEC influenced global events? A. by encouraging trade between oil-dependent states B. by developing energy alternatives to petroleum C. by controlling the supply of oil D. by using oil wealth to encourage democratic reform
How has ISIL contributed to ongoing violence in Iraq and Syria? A. by demanding the establishment of an Islamic state B. by refusing to recognize Israel as a nation C. by replacing theocratic rulers with secular leaders D. by seizing control of oil
Which statement is accurate about natural selection?(1 point) Responses It is a biological process that leads a population to have a widespread expression of an advantageous trait. It is a biological process that leads a population to have a widespread
Which choice correctly identifies a positive correlation regarding the increase in black peppered moth populations in England during the late 1800s?(1 point) Responses the correlation between black moth populations and predation of black moths the
Natural Selection Unit Test 5 of 145 of 14 Items Question How does an individual with a competitive advantage lead to the evolution of an entire species?(1 point) Responses Traits that are advantageous help certain individuals reproduce at higher rates, so
Natural Selection Unit Test 5 of 145 of 14 Items Question How does an individual with a competitive advantage lead to the evolution of an entire species?(1 point) Responses Traits that are advantageous help certain individuals reproduce at higher rates, so
How are transitional fossils evidence to support the process of natural selection?(1 point) Responses They show that most species have not changed over long periods of time. They show that most species have not changed over long periods of time. They show
The following table provides phenotypic data for a population of mammoths living in cold environments based on fossil and DNA evidence. Characteristic Percent of Population Showing Trait by Generation Generation 1 Generation 2 Generation 3 Tusks greater
