This is due today and i need help

Mathematics

2 answers:

iris [78.8K]3 years ago

6 0

Here is your answer.........

Andreyy893 years ago

3 0

Answer:

Question 1 -

The angles in a triangle always add up to 180 degrees.

Triangle 1 (the very left) -

Equation: 180 - (35 + 50) = x

x = 95

Triangle 2 (the middle) -

Equation: 180 - (60 + 90) = x

x = 30

Triangle 3 (the very right) -

Equation: 180 - (137 + 28) = x

x = 15

Step-by-step explanation:

All angles of a triangle add up to 180 degrees.

To write an equation to find the missing angle of a triangle given two angles, you have to first add together the two angles. In an equation, you have to write these added together in parenthesis to show that you need to add those together first. Then, at the beginning of the equation, you write "180 -" to show that you need to subtract the sum of the 2 angles from 180.

Hope it helps!

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Can i have help with these questions

adell [148]

Answer:

(-3, 5), (-1, -1), (5, -3)

Step-by-step explanation:

Each pair of vertices can be one of the diagonals. Then the missing point will be found at the coordinates that are the sum of those, less the coordinates of the third point.

Given points are ...

A(-2, 2), B(1, 1), C(2, -2)

For AB a diagonal, D1 is ...

A+B-C = (-2+1-2, 2+1-(-2)) = (-3, 5)

For AC a diagonal, D2 is ...

A+C-B = (-2+2-1, 2-2-1) = (-1, -1)

For BC a diagonal, D3 is ...

B+C-A = (1+2-(-2), 1-2-2) = (5, -3)

_____

For a lot of parallelogram problems I find it easiest to work with the fact that the diagonals bisect each other. This means they both have the same midpoint, so for quadrilateral ABCD, we have (A+C)/2 = (B+D)/2. Multiplying this by 2 gives the equation we used above, A+C = B+D, so D=A+C-B. Remember, in ABCD, AC and BD are the diagonals.