Question

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Answer 1

answer is A is it right

Answer 2

Angle R is an inscribed angle. It is 1/2 of its arc. So if angle R is 23, its arc is 46. So arc NQ is 46.

Angle O has the same arc but angle O is a central angle. Central angles are equal to their arcs. So what is angle O?

Answer 3

46

Answer 4

yes

Answer 5

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Answer 6

iam sure its option D

Answer 7

Yes. D

Answer 8

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Answer 9

its either A or B

Answer 10

A

Answer 11

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Answer 12

Did you use the Pythagorean Theorem to find BC?

Answer 13

we have been only given one side ?

Answer 14

OB=18 OB is the radius. The radius is given. OC = 13 That is another side. There are two sides given.

Answer 15

so its C

Answer 16

yes

Answer 17

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Answer 18

i tried calculating i got A

Answer 19

Look at triangle AOB. Angle O is 85. Angles A andangle B are equal because the triangle is isosceles. So
Angle A + Angle B + 85 = 180
But Angle A and Angle B are equal so
Angle A + Angle A + 85 = 180

Answer 20

95

Answer 21

Does 95+95+85 = 180 ?????

Answer 22

47.5

Answer 23

yes

Answer 24

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Answer 25

The theorem is: CD^2=BC(BC+AB)

Answer 26

so B

Answer 27

yes

Answer 28

A parallelogram has sides measuring 23.8 m and 35.3 m. The height corresponding to the 23.8-m base is 9.9 m. Find the height, to the nearest tenth of a meter, corresponding to the 35.3-m base.

A. 8317.4 m

B. 14.7 m

C. 6.7 m

Answer 29

The area of the parallelogram is constant no matter which base and height is used.
So
23.8(9.9)=35.3(h)

Answer 30

C

Answer 31

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Answer 32

yes

Answer 33

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Answer 34

merts this one is confusing

Answer 35

There are 64 squares in all. It is hard to count but I counted twice and I got 39 squares that are unshaded. What did you get?

Answer 36

24 shaded ones

Answer 37

So that would be 40 unshaded so the probability of unshaded is 40/64=5/8

Answer 38

The area of a regular octagon is 35 cm2. What is the area of a regular octagon with sides five times as long?

A. 625 cm2

B. 875 cm2

C. 175 cm2

D. 245 cm2

Answer 39

i calculated i got the answer D

Answer 40

Multiply 35 by 25

Answer 41

i multiplied 35 by 5

Answer 42

If you multiply the side by 2, the area will be 2^2 times as big.
If you multiply the side by 3, the area will be 3^2 times as big.
If you multiply the side by 4, the area will be 4^2 times as big.
If you multiply the side by 5, the area will be 5^2 times as big.
Try it with a rectangle: