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3 years ago

How to do exterior angle

1 answer:

5 0

The exterior angles of a polygon all add to 360, if you need to find an exterior angle when given the number of sides and that all angles are equal you simply do: 360/ number of sides.
When you need to find the exterior angle when given an interior angle, you do: 180- interior angle.

Hope this helps :)

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john had a ribbon that was 1 1/2 meters long. he used 2 pieces that were each 1/3 of that length. how much ribbon did john use

dimulka [17.4K]

Of means multiplication. So the question is 1/3 X 1 1/2. First make 1 1/2 improper: 3/2. Then multiply the numerators (top numbers) and denominaters (bottom numbers): 1x3=3, 3x2=6, =3/6. Now simplify 3/6=1/2. Then multiply that by 2, since he used 2 pieces: 1/2x2=1. John used 1 meter :)

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3 years ago

How can you prove a triangle is isosceles?

tatiyna

You can prove a triangle is isosceles by finding the amount of right angles in a triangle. A triangle containing 2 right angles is classified as isosceles.

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3 years ago

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Which of the values for x and y make the equation 2x + 3y + 4 = 15 true?

hjlf

X=1, y=3 because 2x1 is 2 and 3x3 is 9, 2 plus 9 equals 11 and 11 plus 4 equals 15

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3 years ago

Read 2 more answers

Please Help ASAP!!

bogdanovich [222]

Answer:

The answer is 80 because 10x8 is 80 and the nearest 10 means it need to have a 0 behind so it is 80

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3 years ago

Find the x- and y-intercepts of the graph of 10x+2y=20 State each answer as an integer or an improper fraction in simplest form.

Deffense [45]

Answer:

Slope: $\frac{10.000}{2.000} = -5.000$
x - intercept: $\frac{10}{5} = 2$ .
y intercept: $\frac{10}{1} = 10.00000$ .

Step-by-step explanation:

Simplify:

Simplify the equation by subtracting what is to the right of the equal sign from both sides of the equation:
10*x+2*y-(20)=0.

Step 1:

Pull out like factors:
10x + 2y - 20 = 2 * (5x + y - 10)

Step 2:

Equations which are never true:
Solve:
2 = 0
This can't be solved.
A non-zero constant never equals 0.
Equation of a straight line:
Solve: 5x+y-10 = 0
"y=mx+b" is the formula of a straight line drawn on Cartesian coordinate system in which "y" is the vertical axis and "x" the horizontal axis.
In this formula:

y tells us how far up the line goes
x tells us how far along
m is the Slope or Gradient i.e. how steep the line is
b is the Y-intercept i.e. where the line crosses the Y axis
The X and Y intercepts and the Slope are called the line properties. We shall now graph the line 5x+y-10 = 0 and calculate its properties
Calculate the y-intercept:
Notice that when x = 0 the value of y is 10/1 so this line "cuts" the y axis at y=10.00000
y-intercept = 10/1 = 10.00000

Calculate the x-intercept:

Slope is defined as the change in y divided by the change in x. We note that for x=0, the value of y is 10.000 and for x=2.000, the value of y is -0.000. So, for a change of 2.000 in x (The change in x is sometimes referred to as "RUN") we get a change of -0.000 - 10.000 = -10.000 in y. (The change in y is sometimes referred to as "RISE" and the Slope is m = RISE / RUN)
Slope = -10.000/2.000 = -5.000

Answers:

Slope = -10.000/2.000 = -5.000
x-intercept = 10/5 = 2
y-intercept = 10/1 = 10.00000

5 0

2 years ago