Which ordered pair is a solution of the equation?

Mathematics

2 answers:

Anni [7]3 years ago

7 0

Answer:

c) both (1,2) and (2,4)

Step-by-step explanation:

You solve this by plugging the numbers in and seeing if they are equal to each other.

frosja888 [35]3 years ago

5 0

First simplify the equation.

3x+3y= -x+5y

4x=2y

2x=y

y=2x

Means that the y value is 2 times the x value.

answer: C but there are more solutions than just (1,2) and (2,4)

Read more at:

https://careerprepacademy.com/blog/college/the-5-main-reasons-students-don%E2%80%99t-finish-college

4 0

3 years ago

Here's another Math one worth 10.

tia_tia [17]

In a 30-60-90 triangle the side opposite the 30 degree angle is half the length of the hypotenuse.
The short leg is the side opposite the 30 degree angle. If the short leg =x, then the hypotenuse = 2x

The ratio of the short leg to the hypotenuse in the given triangle is cos(60°)

$
cos(60^o) = \frac{adjacent \ side}{hypotenuse } = \frac{x}{2x} = \frac{1}{2}$

Answer is C. 1:2

7 0

3 years ago

What is the sum of the interior angles, each interior angle, the central angle, and each exterior angle of a pentagon, a hexagon

WITCHER [35]

Sum of Interior Angles: Formula: (n-2) * 180
-Pentagon: 540°
-Hexagon: 720°
-Octagon: 900°
-Nonagon: 1260°
-Decagon: 1440°
-Dodecagon: 1800°

Each interior Angle: Formula: [(n-2)*180] / n
-Pentagon: 108°
-Hexagon: 120°
-Octagon: 135°
-Nonagon: 140°
-Decagon: 144°
-Dodecagon: 150°

The sum of the exterior angles of each polygon stated above is equal to 360 degrees. Using the formula: (180-interior angle) * n

The central angle is formed by making a circle in the middle and divide it by the number of sides. Therefore, CA = 360 /n
-Pentagon: 72°
-Hexagon: 60°
-Octagon: 45°
-Nonagon: 40°
-Decagon: 36°
-Dodecagon: 30°

3 0

3 years ago

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Lapatulllka [165]

All triangles in this shape have same area as they have same base length and height length.