What is rational expression example?
Space and AstronomyRational expressions look like fractions that have variables in their denominators (and often numerators too). For example, x 2 x + 3 \dfrac{x^2}{x+3} x+3×2start fraction, x, squared, divided by, x, plus, 3, end fraction is a rational expression. What is a rational expression? Definitions: A rational expression is the ratio of two polynomials. If f
How do you winterize calla lilies?
Space and AstronomyCalla lilies will overwinter outdoors in Zones 9-11, but in most places they need to overwinter indoors. If you’ve grown the plants in pots, you can simply move the pots inside to a dark location for the winter without having to dig at all. Just repot them in fresh soil in spring. How do you
How can the metaphor of a spaceship be used to describe Earth?
Space and AstronomySpaceship Earth is a metaphor which suggests that the earth is a small, vulnerable craft in space. Adlai Stevenson used the metaphor in his presidential campaign speeches during the 1950s, but it is not clear who originated it. Why is the term spaceship a metaphor for the planet Earth? He coined the phrase “Spaceship Earth”
What is meant by corresponding sides?
Space and AstronomyCorresponding sides are the sides that are in the same position in any different 2-dimensional shapes. For any two polygons to be congruent, they must have exactly the same shape and size. This means that all their interior angles and their corresponding sides must be the same measure. What are corresponding sides example? For example,
What evidence is there that our universe contains dark energy?
Space and AstronomyThe first direct evidence for dark energy came from supernova observations in 1998 of accelerated expansion in Riess et al. and in Perlmutter et al., and the Lambda-CDM model then became the leading model. What is the one piece of evidence that our universe is made of dark matter? The phenomenon is called gravitational lensing.
Are parallel triangles similar?
Space and AstronomyWhen a line is drawn parallel to one side in a triangle, two similar triangles are formed because corresponding angles yield the AA similarity shortcut. Because the triangles are similar, the segments formed by the parallel line are proportional segments. What is a parallel triangle? Geometry. If a line parallel to one side of a
What are defined and undefined terms in geometry?
Space and AstronomyIn Geometry, we have several undefined terms: point, line and plane. From these three undefined terms, all other terms in Geometry can be defined. In Geometry, we define a point as a location and no size. What are the defined and undefined terms? Undefined terms are those terms that don’t require a formal definition. The
How do you make a paper mache astronaut helmet?
Space and AstronomyHow do you make a homemade astronaut helmet? Video quote: All right time to get to work and you're gonna need some supplies. Contact cement pattern a sharp knife foam camping bat hairdryer craft foam rubber gloves glue gut paint. How do you make a realistic astronaut helmet? Video quote: So that you have a
Why do we believe that starburst galaxies represent?
Space and AstronomyWhy do we believe that starburst galaxies represent a temporary stage in galaxy evolution? Such galaxies produce so much light that they would have consumed all their gas long ago if they had always been forming stars at this high rate. determining their redshifts. What is a quasar? What is a starburst galaxy and what
What does parallel mean for kids?
Space and Astronomyparallel. noun. Kids Definition of parallel (Entry 2 of 3) 1 : a line or surface that lies at or moves in the same direction as another but is always the same distance from it. 2 : one of the imaginary circles on the earth’s surface running in the same direction as the equator and