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3 years ago

Need help with this math question

Mathematics

1 answer:

Yanka [14]3 years ago

5 0

Answer:

scale factor

Step-by-step explanation:

A vocabulary term is what it is. Often, there is no explanation.

To change (multiply by a constant) every dimension of a figure is to scale it; the number by which it is scaled is a scale factor.

Area and Volume are parameters of a figure. Enlargement is the process or the result of the process of making things larger (generally). The enlargment may actually be a reduction if the scale factor is less than 1.

A coefficient is the multiplier of some variable or variable term. It is often a constant, but may not be. An equation involving figure dimensions may use a scale factor as a coefficient, but in general, the terms are unrelated.

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Suppose a circle with center (14, 9) passes through point (16, 12). Which equation represents the circle?

kumpel [21]

Answer:

The equation that represents the circle is $(x-14)^{2}$ + $(y-9)^{2}$ = 13

Step-by-step explanation:

Given the center of circle (14,9) passes through point (16,12)

We know that the equation of circle is

$(x-h)^{2}$ + $(y-k)^{2}$ = $r^{2}$

where (x,y) is any point on the circle, (h,k) is center of the circle and r is radius of circle.

From given data (x,y) is (16,12) and (h,k) is (14,9). Substituting these values in equation of circle, we get

$(16-14)^{2}$ + $(12-9)^{2}$ = $r^{2}$

$r^{2}$ = $2^{2}$ + $3^{2}$

$r^{2}$ = 13

Substituting the values of (h,K) and $r^{2}$ as (14,9) and 13 respectively in equation of circle, we get

$(x-14)^{2}$ + $(y-9)^{2}$ = 13

Hence the equation that represents the circle is $(x-14)^{2}$ + $(y-9)^{2}$ = 13

7 0

3 years ago

Please help.

natka813 [3]

Answer:

2,4,6 and 8 are all 40degrees that means 1,3,5 and 7 are 140 degrees. 2,4,6, and 8 are at a diagonal that allows them to equal eachother. because 2 is given 40degrees as the angle 4,6 and 8 must also be 40 degrees. a flat line is 180 degrees. 180-40=140

you have vertical angles alternate interior, alternate exterior

Step-by-step explanation:

Vertical Angles: a pair of opposite congruent non-adjacent angles formed by intersecting lines; share a vertex

Alternate Interior: when a transversal intersects two lines, alternate interior angles are on opposite sides of the transversal and on the inside of the given lines

Alternate Exterior: when a transversal intersects two lines, alternate exterior angles are on opposite sides of the transversal and on the outside of the given lines They are congruent.

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Andru [333]

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In the fourth equation, x depends on what value of y you use. The way it is written, y is the input and x is the output.
In the last equation, either x or y could be the input. The other variable would change depending on which variable you replace with a number.

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vladimir1956 [14]

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