Questions and answers by

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Questions (86)

Which step contains an error using the Commutative Property of Addition in verifying 8+x2+17x−x2+4=10+4x2+10x−4x2+2+7x ?Step
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Which of the following correctly demonstrates the Commutative Property of Addition?(1 point)Responses abc+xyz=xyz+abc a b c plus
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Which of the following correctly demonstrates the use of the Commutative Property of Multiplication?(1 point)Responses
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Consider the expression [3(42+32÷4−5)]. Which quotient must be found to simplify the expression?(1 point)Responses 32÷4 32
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Use the grouping symbols to interpret the following equation: x8=3(x+4)2. Which expression in the equation represents a
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An equation can be broken down into expressions, terms, variables, constants, and coefficients. In the equation 0.4−7x=3 ,
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Julio and Ashley went to the drive-in theater. They paid an entry fee for the car and individual entry fees for themselves.
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Using the exponent properties, which of the following expressions is equivalent to (2–√)3×2−12? (1 point) Responses 212 2
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How does the reactivity of neon (atomic number 10, period 2, group 18) differ from that of sodium (atomic number 11, period 3,
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A model shows a molecule of water. The model shows two small blue balls attached to a larger green ball with one stick attaching
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An element has six valence electrons. Which ionic charge will its ion carry?(1 point)Responses 2+ 2+ 6– 6– 6+ 6+ 2–
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Group 2 elements have two valence electrons. Which kind of bond will they most likely form, and why?(1 point)Responses An ionic
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How many electrons can carbon accept from other atoms while bonding? (1 point)Responses eight eight four four two two six
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Why are the noble gases the least reactive elements? (1 point)Responses They have a full valence electron shell. They have a
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Which statement correctly compares the valence electrons for atoms of francium (Fr) and barium (Ba)?(1 point) Responses Francium
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Which statement best explains why hydrogen’s atomic number is equal to its mass?(1 point)Responses Hydrogen is in the first
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Which element has four valence electrons?(1 point) Responses silicon (Si) silicon (Si) sulfur (S) sulfur (S) beryllium (Be)
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Use the periodic table to answer the question.An illustration shows the periodic table of elements. The elements in the periodic
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Which statement about metals and nonmetals is correct?(1 point)Responses Metals can be hammered into thin sheets, and nonmetals
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You plan to pass alpha particles through a field that contains a consistent type of particle. Which configuration will result in
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On which atomic property proposed by Henry Moseley is the current periodic table of the elements based?(1 point)Responses atomic
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rational numbers and irrational numbers unit test
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Simplify each expression.(2 points)
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Toggle whether the expression is rational or irrational.(9 points)Rational Irrational 3–√+25 23×5–√ 2π +7 0.5+34 0.5
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Which option best explains the connection between access to resources and spatial patterns in the global system?(1 point)Respons
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Which option is the best strategy to synthesize information from sources regarding boundary issues?(1 point)Responses Find one
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Which of the following processes is the reason for cooperation among multiple countries regarding natural resources?(1 point)Res
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Which of the following options represents the most accurate investigation into how access to oil impacts the actions of
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Which option most correctly analyzes the benefits and downsides to the industrialization experienced by China in the last 40
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Which option correctly identifies an example of physical water scarcity within a particular region?(1 point)Responses War in
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Which of the following statements provides the most accurate investigation of why Ethiopia and Egypt have run into conflict over
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Which of the following countries is both a top producer of oil, and has one of the highest levels of energy consumption?(1
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Which option most accurately compares how oil and energy consumption are distributed around the world?(1 point)Responses
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Critique each of the following statements and choose the most accurate.(1 point)Responses The trend toward urbanization has
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Which option correctly identifies a result of agricultural practices? (1 point)Responses soil erosion soil erosion biodiversity
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Which statement offers the best critique of how humans have impacted the environment through agricultural activities?(1 point)Re
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Compare and contrast the location of the following regions. Which statement best identifies a region where tsunamis are
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Identify which landform is created by a glacier.(1 point)Responses a barrier island a barrier island a cave a cave a V-shaped
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Which type of plate boundary is characterized by plates moving toward each other?(1 point)Responses divergent plate boundary
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Choose the statement that best explores what drives the processes of plate tectonics.(1 point)Responses The sun drives the
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How would you say "I like neither skating nor skateboarding " in Spanish?(1 point) Responses No me gusta ni patinar o montar en
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Which of the following is considered to be the center of town life in Spanish-speaking countries?(1 point) Responses sobremesa
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A mí también.A mí también. ¿Y a ti? ¿Y a ti? ¿Te gusta dibujar? ¿Te gusta dibujar? Me gusta más dibujar.
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QuestionWhich Spanish city is known for the fact that people of three different religions peacefully lived there together? (1
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Which of the following would be an appropriate response to the following audio clip?(1 point) Responses Me gusta escribir
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What is the Spanish word for the activity seen in this image?A young man is swimming in a pool. (1 point) Responses correr
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Which of the following belongs in an objective summary?(1 point)Responses the text’s details the text’s details the most
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Why does the sequence of ideas matter in an informational text?(1 point)Responses It helps readers follow the author’s logic.
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What information does an introduction provide for readers?(1 point)Responses An introduction presents counterclaims to the
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Which word describes the facts and information that support an idea or analysis?(1 point)Responses evidence evidence statement
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Developing Ideas Quick Check2 of 52 of 5 Items Feature "Lonesome George's Genome Offers Clues to Long Life" by Vicky Stein
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"Lonesome George's Genome Offers Clues to Long Life"by Vicky Stein Lonesome George, a wizened Galapagos giant tortoise, was the
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What helps readers interpret an informational text to find the central idea?(1 point)Responses other texts on the same subject
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"Why Journalism Has A Gender Problem"by Corinne Segal The journalism industry is severely lacking in leadership by women and
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What is a central idea?(1 point)Responses a fact, statement, or example that adds information a fact, statement, or example that
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Informational Text Word Choice Quick Check2 of 52 of 5 Items Question What does denotative mean?(1 point) Responses going beyond
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Use the dictionary definition to answer the question.discontent (dis kәn ‘tent) adj. dissatisfied unhappy with the state of
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What does a diacritical mark do?(1 point)Responses explains the origin of a word explains the origin of a word explains the
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If generate means “to produce,” what does regenerate mean?(1 point)Responses to produce too many to produce too many to
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What is a context clue?(1 point)Responses text near a word that helps clarify its meaning text near a word that helps clarify
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When the Iodine gains one electron, what will the charge be?
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An iodine atom has seven valence electrons. Do you think it will lose seven electrons or gain one electron to obtain an octet in
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Fluorine has 7 valence electrons. Which charge is its ion likely to have?(1 point)Responses 5+ 5+ 5- 5- 1+ 1+ 1–
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Which information about an atom can a period number give you?(1 point)Responses the number of valence electrons it has the
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When moving across a period from left to right in the periodic table (excluding transition elements) which trend occurs?(1
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Ions Quick Check1 of 51 of 5 Items Question Based on the naming rules for ions, which of the following is a negatively charged
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Which option describes the structure of the electron shells in a neutral carbon atom?(1 point)Responses The inner shell is
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Why is carbon said to provide a “backbone” in many molecules?(1 point)Responses Carbon atoms can form chains and branches
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Which kind of bond would occur between sodium (Na, Group IA) and chlorine (Cl, Group VIIA)?(1 point)Responses no bond no bond
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Between which types of elements do ionic bonds occur, and how do electrons act within the bond?(1 point)Responses nonmetals and
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Metallic bonds are responsible for many properties of metals, such as conductivity. Why is this possible?(1 point)Responses
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What are the key benefits to your heart and cardiovascular system from regular exercise that elevates your heart rate?
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How can you determine if you are exercising within your target heart rate zone? What are the benefits of doing so?
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What happens to your heart rate when you engage in vigorous exercise, like running sprints? How does this compare to light and
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What happens to your heart rate when you engage in moderate exercise, like jogging? How does this compare to light exercise?
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How does light exercise, like walking, affect your heart rate compared to when you are at rest?
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QuestionWhich elements would react most easily with each other? (1 point) Responses an element with a high electronegativity and
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Which element listed would have the greatest electronegativity?An illustration shows the periodic table of elements. (1 point)
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How are reactivity and electronegativity related?(1 point)Responses An element will be less reactive if it has a very high or
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Which elements on the periodic table are the least reactive? (1 point)Responses the group with fluorine at the top the group
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Which element would have the lowest electronegativity? (1 point)Responses an element with a large number of valence electrons
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Use the periodic table to answer the question.The elements in the periodic table are arranged in groups (columns numbered Roman
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Use the periodic table to answer the question.The elements in the periodic table are arranged in groups (columns numbered Roman
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Helium is in group 18 of the periodic table. How is helium different from the other elements in this group?(1 point)Responses
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Two representative elements, nitrogen and oxygen, are in the same period of the periodic table. Which statement correctly
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Use the periodic table to answer the question.The elements in the periodic table are arranged in groups (columns numbered Roman
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2. 14 views