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3 years ago

Does anybody know the answer? I feel like it's 180

Mathematics

1 answer:

Vladimir79 [104]3 years ago

8 0

Answer:

The sum of a° and b° will be 180°.

Step-by-step explanation:

We know that two angles are supplementary when they add up to 180 degrees.

We also know that we know that a straight angle is said to be having 180 degrees. A straight angle does change the direction to point the opposite way.

i.e.

Straight angle = 180°

For example, a flat surface does have an angle of 180 degrees. Also, a straight stick does have a straight angle or 180 degree.

So, from the figure, the sum of a° and b° will be 180° as they add up to 180 degrees on a straight line and hence a° and b° are supplementary angles.

Therefore, the sum of a° and b° will be 180°.

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Will give Brainliest!! pleases help, math.

oee [108]

Answer:

a = sqrt(b^2 + c^2 - 2bc cosA) = sqrt(13^2 + 6^2 - 2 * 13 * 6 * cos 50) = sqrt(169 + 36 - 156 cos 50) ≈ sqrt(205 - 100.3) ≈ sqrt(104.7) ≈ 10.2

a ≈ 10.2

c / sin C = a / sin A

sin C = c sin A / a = 6 sin 50 / 10.2 ≈ 0.4491

C = arcsin(0.4491) ≈ 26.7

C ≈ 26.7°

B = 180 - A - C ≈ 180 - 50 - 26.7 ≈ 103.3

B ≈ 103.3°

Step-by-step explanation:

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3 years ago

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Answer:

Step-by-step explanation:

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3 years ago

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Sergio [31]

Answer: 2 independent sample test of proportions

Step-by-step explanation:

The teo independent sample test of proportion is also referred to as the two proportion z-test and it simply allows the researcher to compare the two proportions in order to ascertain if they're the same or not.

In this case, the null hypothesis will be that that the proportions given in the research are the same while the alternate hypothesis will be that there is a difference between the proportions given.

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3 years ago

Find the Area ( PLEASE LEAVE EXPLANATION)

LenaWriter [7]

Answer:

28 ft²

Step-by-step explanation:

Hello There!

To solve for the area of an irregular shape we want to split the irregular shape into regular shapes

For this irregular shape we would split it into a square with a side length of 2ft and a rectangle with a length of 6ft and a width of 4ft ( width was found subtracting total height of irregular figure (6ft) from height of square (2ft) 6ft - 2ft = 4ft so the width would be 4ft)

now we can easily solve for the area of each individual shape

area of square -

the area of a square can simply be found by raising the side length to the power of 2

$a =2^2\\2^2=4\\a=4ft^2$

so we can conclude that the area of the square is 4ft^2

Now we want to find the area of the rectangle

the area of a rectangle is simply equal to the width times the length

$a=6*4\\6*4=24\\\\a=24ft^2$

so we can conclude that the area of the rectangle is 24ft^2

Finally we add the two areas together

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thus meaning the area of the irregular figure is 28 ft²

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3 years ago

Solve for A 3<br>A 3 = ?

Svetradugi [14.3K]

Answer:

angle 3 = 60

Step-by-step explanation:

60-60-60 triangle rule

this triangle has 2 60 degree angles so it fits this rule

equilateral traingle

<u>or </u>

a triangle has a total of 180 degrees

so:

180-(60+60)

180-120

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3 years ago