Questions and answers by

DingJie

Questions (112)

In 1990, Jamaica's population of 2,466,000 was expected to grow exponentially by 1.1% each year. Which graph represents
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Explain two different ways to solve 724.
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3. A runner's speed is given by the function s(h) = 2vh and the associated time is given by the function t(h) =3v4h. What
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Does science help shape society through policy?Science does not ever help shape society through policy. Science is only used to
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1. What are all the possible rational roots of f(r) =2r3 -2r2 +r+8?O-를,-1,-2,-4,-8 0,±h,±1,±2,±4,±8 O
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3. Which is true about the polynomial function y = 5 + x3 - x2 -1?The function has at least one zero in the set of complex
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What is the complex conjugate of the rootx=3i
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Which theorem states that if a remainder is zero in a problem where a linear binomial is divided into a polynomial, then the
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Which polynomial does NOT have an absolute maximum?4th degree 3rd degree 2nd degree
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What process marks the birth of a star?when it begins combining hydrogen to form helium when its mass expands and cools a
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What is a trade-off?something you sacrifice in order to gain something else something you gain when you study science a new
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What kind of research method is good for letting us see patterns in nature?cause and effect comparison relational simulation
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What should you do if you mention the work of other scientists in your own reports?Avoid mentioning the name of the other
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.Which of the following is an example of a scientific theory? an untested hypothesis about the structure of DNA The law of
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Which word best describes a good scientific question?broad narrow-focused testable unanswerable
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Models help us develop testable hypotheses because modelsare based on things we have never seen make our observations more
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A globe is what kind of model?interactive visualization conceptual mathematical
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Which of the following is a scientific advantage in the field of sanitation?text messaging air travel exploration wastewater
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Which of the following is an example of discrete data?The dog has 2 brothers. The dog’s height is 54.3 centimeters. The dog
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When can a theory be revised?if the general public does not understand the theory after 10 years if new knowledge expands and
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To draw reliable conclusions from data, the datacan be left out as long as you remember it in your mind can be edited after it
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What is bias?reporting things as they really are basing reports on your personal beliefs not falsifying data making objective
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What type of research study is best for placing objects into categories?comparison cause and effect simulation relational
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Where is the independent variable usually located in a scientific table?First column Second column Third through fifth columns
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Which of the following is a scientific question?What stores sell my favorite flavor of gum? How many lizards live in Paynes
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Suppose you want to model the way the human heart reacts to different levels of exercise. What kind of model should you use?math
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Because models show us the relationships between parts of a whole, they help usalways have correct information see very small
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Which of the following best defines “model?”a brainstorming activity to help you organize your questions a computer
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What type of model is a diagram of the core (inside) of the sun?mathematical conceptual visualization interactive
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What type of model is a diagram of the core (inside) of the sun?
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Which of the following shows the Power of a Power Property?
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Which is a possible combination of root types for a 7th degree polynomial?2 rational roots, 2 irrational roots, 3 complex roots
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Which theorem equates the value of a polynomial at a given value,, to the value of the synthetic division of the polynomial by
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A critical need of society is one that isexaggerated optional urgent unimportant
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What type of graph displays the frequencies of events or traits?circle graph bar graph histogram x, y scatter graph
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Explain how to show that a quadratic equation contains a perfect square trinomial.
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What is the imaginary component of the complex number (7-2i)
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What is the complex conjugate of 5-3i
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Which is the best first step of graphing a quadratic function in standard form?Choose some values of x so that you can find the
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Which describes the graph of a quadratic function?A straight line that extends to infinity in both directions. A U-shaped curve
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Which is the best definition of a parabola?An upside-down U created by graphing an exponential function. A U-shaped curve
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Which properties must you use to add or subtract complex numbers?associative and distributive properties associative and
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.Which is a step in dividing complex numbers? Multiply the denominator by its complex conjugate. Multiply the numerator by its
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Explain the difference between perimeter and volume.Perimeter represents space inside a two-dimensional object. You use volume
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Which statements describe characteristics of an AND inequality
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What word is often associated with absolute value
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Menna is traveling in a country that measures its temperature in degrees Celsius. If the high temperature for tomorrow will be
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21. The president argued that we need to reduce tunding for me aammeunyote for someone who doesn't think the government should
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云边有个小卖部程霜与茶花女中的玛格丽特有何相似之处具体描述
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云边有个小卖部程霜与茶花女中的玛格丽特有何相似之处
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open a coke, open happinesswhat persuasive technique it use for
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open a coke, open happinesswhich persuasive technique it use for
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open a coke, open happinesswhich persuasive technique it use
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open a coke, open hapiness
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adopt this cute puppy before it's euthanized what persuasive technique it use for
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adopt this cute puppy before it's euthanized what persuasive technique it use
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describe the advantages and disadvantages of writing a vector in matrix from instead of component form
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26. Reasoning Suppose the product of two matrices has dimensions 4 X 3. If one of the matrices in the multiplication has
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25. Open-Ended Write a matrix equation with solution12 7 -3 8 9 0 -11 1
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24. Writing How can you decide whether you canmultiply two matrices?
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Given the vertices, find the area of each triangle.22. (-4,1), (5, 2), and (2, -3) 23. (-2, -3), (-5, 4), and (4, 1)
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e. Explain to Reese how to multiply and divide fractions.
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靖康之耻事件缘由记录一件最令你震惊的史实，并说说你的看法
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靖康之耻事件缘由
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靖康之耻事件缘由记录一件最令你震惊的史实，并说说你的看法如果你是当时的一个平民百姓，
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you designed an elliptical platform that is 12ft across at its widest point. the choreographer of a play wants to place it on a
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you designed an elliptical platform that is 12ft across at its widest point. the choreographer of a play wants to place it on a
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Sound Broadcasters use a parabolic microphone on football sidelines to pick up field audio for broadcasting purposes. A certain
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imagine you were in Auschwitz during Hitlers time. write a short diary about your daily life.
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what does holocaust happen
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describe the figures you can see that can be formed by the intersection of a plane and a rectangular prism
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Sketch the possible orientations to the ground of the airplane and its pressure cone
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Is there only one possible path on the ground? Explain.
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. How can a drawing or model help you solve this problem?
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To solve the problem I need to find:
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The ground near the airplane is shaped like a
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The pressure disturbance is shaped like a
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(1,2):y^2=4xuse symmetry to find at least one more point on the graph
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(1,2):y*2=4xuse symmetry to find at least one more point on the graph
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(2,0):4x*2+4y*2=4use symmetry to find at least one more point on the graph
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(2,0):x*2+y*2-4=0use symmetry to find at least one more point on the graph
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(0,-3):x*2+2y*2=18use symmetry to find at least one more point on the graph
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a student wants to graph a circle with the equation x*2+y*2=25 what points should e use to determine a sketch of the graph
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(1,2);y*2=4x find at least one more point on the graph
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one student identifies four types of conic sections. another says there are only three types(hyperbole, circle, and ellipse),
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describe the graph9x*2+4y*2=36
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a. Write a function that models a combined variation situation with two independent variables, let one of the variables have
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State any restrictions on the variable in the complex fraction. （（x-3）/(x+4)）/((x*2-1)/x)
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Write a function whose graph has ahole, a vertical asymptote, and a horizontal asymptote
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How is simplifying rationalexpressions similar to simplifying fractions? How isit different?
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Describe a situation that represents aninverse variation.
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Your neighbor can seal your driveway in 4 hours. Working together, you and your neighbor can seal it in 2.3 hours. How long
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a.write a function that models an inverse variation situationb.find the constant of the inverse variation c.determine the
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task1a.write a function that models an inverse variation situation b.find the constant of the inverse variation c.determine the
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a.write a function that models an inverse variation situation
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a.write a function that models an inverse variation situationb.find the constant of the inverse variation c.determine the
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Identify the number of points a game is played to
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Let f(x) = 2(x- h1)*2 + k1 and g(x) = ( x- h2)*2 + k2, where h1, h2,k1,k2. The vertex of the graph of f is at (m,-m*2) and the
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Graph each equation. Identify the x- and y-intercepts andthe asymptotes of the graph. 11.y=1/x 12.y=-2/x*2 13.y=(-1/x)-4
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Find any points of discontinuity for each rationalfunction. Sketch the graph. Describe any vertical or horizontal asymptotes and
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