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Step2247 [10]
3 years ago
11

I need help i don’t understand this

Mathematics
2 answers:
DIA [1.3K]3 years ago
7 0
The flat line is always 180* the angle on the right says 138*. So you subtract 138 from 180 and you get 42*. So you put 42* as the Acute angle next to 138* on C.
It’s been a while since I did this next part so I may be wrong. But once you have the angle of two sides you add them and subtract them from 180 to get the third angle of the rectangle. So 82+42= 124, 180-124=56. So 56 is A
lys-0071 [83]3 years ago
6 0
Answer:
Angle BAC: 56
ANGLE BCA: 42

Why? First find angle BCA because that angle is on a straight line with another angle on the other side you can do
180-138=42 which is the measurement of angle BCA.

For angle BAC you have to know that the sun of all triangles interior angles is 180 so you do
180-82-42=56
So angle BAC is 56

Hope this helps :D
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The area of a circle A is 85π ft2. ∠BAC is a central angle of the circle, and m∠BAC = 36°
BlackZzzverrR [31]
As stated the area of the circle is 85π ft2. The area of the sector BAC is a portion of this full circle area. the sector is made of 2 radii and arc that has rotated by 36°.
the magnitude of the central angle in the circle is 360°
Area for 360° central angle -  85π ft2
then the area for 1°            =  85π ft2/360°
the area of 36° sector         =  85π ft2/360° x 36°
                                           =  8.5π ft2
7 0
3 years ago
Please answer this (photo)
Musya8 [376]

Answer:

y=-3/2x+3

Step-by-step explanation:

The form of the equation of a line in slope intercept form is y=mx+b, where m is the slope and b is the y intercept. The first step is to find the slope of a line. Since it goes down 3 units for every 2 it moves to the right, it has a slope of -3/2. The y intercept is also obviously at (0,3). Therefore, the equation of this line is y=-3/2x+3.

Hope this helps!

3 0
3 years ago
Find the coordinates of the third vertex that completes the construction of a right triangle on the coordinate plane.
Neko [114]

Answer:

<u>(7,a) Where a ∈ R - {7}</u>

<u>OR</u>

<u>(-2,a) where a ∈ R - {-2}</u>

Step-by-step explanation:

The coordinates of the given line from the right to the left are:

(7,1) and (-2,1)

So, to make a right triangle, we need to make a right angle or by another words, we need to a make a perpendicular line to the given line (i.e: a vertical line parallel to the y-axis at one of the given points)

So, the third vertex must be on the line x=7 or x=-2

So, the coordinates of the third vertex is:

<u>(7,a) Where a ∈ R - {7}</u>

<u>OR</u>

<u>(-2,a) where a ∈ R - {-2}</u>

3 0
3 years ago
Read 2 more answers
Don’t answer if you don’t know, plz. Thanks.
horrorfan [7]
B. I did this test too.
7 0
2 years ago
What the simplest radical form of square root of 50 is
vekshin1
The answer to this is 5√2
3 0
3 years ago
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