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lara31 [8.8K]
3 years ago
8

Please help I’ve been struggling for ages!

Mathematics
1 answer:
Lapatulllka [165]3 years ago
3 0

Answer:

"D" only 1 & 2

Step-by-step explanation:

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Please help with khan
kodGreya [7K]

Answer:

not 100% but I think it's Step 1

3 0
2 years ago
Quadrilateral ABCD is inscribed in a circle. Find the measure of each of the angles of the quadrilateral. Show your work.
Sveta_85 [38]
Your statement that angle C and angle D adding to 180 degrees isn't always true. What is always true is that angle A and angle C add to 180 degrees.

Rule: The opposite angles of an inscribed quadrilateral are supplementary (add to 180 degrees)

So,
(angle A) + (angle C) = 180
(x+2) + (x-2) = 180
x+2+x-2 = 180
2x = 180
2x/2 = 180/2
x = 90

Once you know x, you can find the angles
measure of angle A = x+2
measure of angle A = 90+2
measure of angle A = 92 degrees

measure of angle C = x-2
measure of angle C = 90-2 
measure of angle C = 88 degrees

Note how A+C = 92+88 = 180

measure of angle D = x-10
measure of angle D = 90-10
measure of angle D = 80 degrees

measure of angle B = 360-A-C-D ... see note below
measure of angle B = 360-92-88-80
measure of angle B = 100 degrees

Note: for any quadrilateral, the four angles add to 360 degrees. So A+B+C+D = 360. We can solve for B to get B = 360-A-C-D
3 0
3 years ago
The radius of a circle is 6 cm. What is its diameter?
Sunny_sXe [5.5K]

Answer:

Step-by-step explanation:

d=2r=2, 6 =12

diameter=12

5 0
3 years ago
Tammy is testing the cellphone service in a certain area for a cellphone company. The signal during the test can be modeled by s
Marat540 [252]

Answer:

4.71

Step-by-step explanation:

3* pi = 9.42

9.42/2 = 4.71

7 0
3 years ago
Find the Area of the figure below, composed of a rectangle with two semicircles removed. Round to the nearest tenths place.
Allisa [31]

Answer:

21.8

Step-by-step explanation:

hii so basically first we find the area of the 9 by 8 and subtract the area of the semicircles.

area of circles are πr^2, so in this situation

π4^2 which is 16π.

with this, the semicircle which is half a circle would give us

16π/2 which is 8π.

but then, we have two semicircles removed so we would have as an answer:

(9*8)-8π+8π

72-16π

then you would have to round so

16π is around 50.2

so 72-50.2 is 21.8

i hope this helped you <33

6 0
3 years ago
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