Use the shapes to answer the question.

Mathematics

1 answer:

ohaa [14]3 years ago

5 0

Answer: B. quadrilateral

Step-by-step explanation:

A quadrilateral is used to describe polygons with four sides. Polygons are two dimensional shapes that are closed. and have sides that are straight.

Parallelograms, rectangles, rhombuses, trapezoids are all four sided polygons as they are closed and have straight sides and so fall under the umbrella term for shapes with four sides, Quadrilateral.

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How many of the first 999 Fibonacci numbers are odd?

belka [17]

Every 3rd number is even with 2 odd numbers in between successive even numbers.

999/3 = 333 x 2 = 666.

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Thank you,
Darian

7 0

3 years ago

Determine whether the system of linear equations has one and only one solution, infinitely many solutions, or no solution. 2x −

zloy xaker [14]

Answer:

Only one solution
(x, y) = (-0.8, -3.6)

Step-by-step explanation:

You know there is only one solution because the ratio of x- and y-coefficients is different in the two equations. That means the lines will have different slopes, so must intersect in exactly one point.

The y-coefficients are opposites, so you can eliminate the y-variable by adding the equations:

(2x -y) + (3x +y) = (2) + (-6)

5x = -4

x = -4/5 = -0.8

Substituting this into the second equation, we have ...

3(-0.8) +y = -6

y = -3.6 . . . . . . . add 2.4 to both sides

The solution is (x, y) = (-0.8, -3.6).

You can also find the solution by graphing (or using a graphing calculator).