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Olin [163]
3 years ago
14

Work out the size of angle xill mark brainliest first corect answer!​

Mathematics
2 answers:
Nostrana [21]3 years ago
6 0
X = 65 degrees

The angles at the bottom outside of the triangle are supplementary with the angles at the bottom inside (sum of the 2 = 180°)

So we can calculate the bottom interior angles:
180 - 105 = 75
180 - 140 = 40

We know that the sum of all interior angles of a triangle = 180, so
75 + 40 + x = 180
115 + x = 180
x = 65°
kykrilka [37]3 years ago
6 0

Answer:

65°

Step-by-step explanation:

First we find the sizes of the other two sides, as the bottom line is straight all angles on it must add up to 180 so:

180-105=75

So the first angle is 75°

180-140=40

So the second angle is 40°

Now as the angles of a triangle add up to 180 we can derive this equation:

75+40+x=180

and all we do is just subtract both sides by 75 and 40:

x=180-75-40

x=65

And 65 is our answer

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write an equation in slope intercept form for the line that passes through the points (3,2) and(-9,6)
netineya [11]

Answer:

y = - \frac{1}{3} x + 3

Step-by-step explanation:

The equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

Calculate m using the slope formula

m = (y₂ - y₁ ) / (x₂ - x₁ )

with (x₁, y₁ ) = (3, 2) and (x₂, y₂ ) = (- 9, 6)

m = \frac{6-2}{-9-3} = \frac{4}{-12} = - \frac{1}{3}, hence

y = - \frac{1}{3} x + c ← is the partial equation

To find c substitute either of the 2 points into the partial equation

Using (- 9, 6), then

6 = 3 + c ⇒ c = 6 - 3 = 3

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4 0
3 years ago
The map of a biking trail is drawn on a coordinate grid.
katrin [286]

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Hope that helps!

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Is 0.252 a whole number?
NemiM [27]

Answer:

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A whole number is like 1.

1.5 wouldn't be a whole number.

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