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Zina [86]
3 years ago
10

In the diagram of circle o, what is the measure of ZABC? O 30° O 40° O 50° O 60

Mathematics
2 answers:
denpristay [2]3 years ago
7 0

Answer:

30°

Step-by-step explanation:

Line AB and BC are tangents to the given circle.

\angle \: ABC =  \frac{1}{2} ( 210 - 150)

\angle \: ABC =  \frac{1}{2} (60) = 30 \degree

Alternatively, <ABC and <AOC are supplementary because AB and BC are tangents.

\angle \: ABC  + 150 \degree = 180 \degree

\angle \: ABC = 180 \degree - 150 \degree = 30 \degree

The correct choice is A.

netineya [11]3 years ago
3 0

Answer:30

Step-by-step explanation:

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I need help with this question
Dimas [21]

Answer:

Step-by-step explanation:

10+18+25+27+35+50=165

n=6

mean =165/6=27.5

x   x- mean    (x-mean)²

10     -17.5          306.25

18      -9.5            90.25

25     -2.5              6.25

27     -0.5              0.25

35      7.5            56.25

50   22.5          506.25

      _____      ________

sum     0             965.5

       _____     _________

standard deviation

=\sqrt{\frac{sum}{n-1} } \\=\sqrt{\frac{965.5}{5} } \\=\sqrt{193.1} \\\approx 13.896

4 0
2 years ago
For the geometric sequence of a1=2 and r=2 find a5
Brrunno [24]

Answer:

a_5 = 32

Step-by-step explanation:

The nth term for the geometric sequence is given by:

a_n = a_1 \cdot r^{n-1}

where,

a_1 is the first term

r is the common ratio

n is the number of terms.

As per the statement:

For the geometric sequence of a_1=2 and r=2

We have to find a_5

for n = 5;

a_5=a_1 \cdot r^{n-1}

Substitute the given values we have;

a_5 = 2 \cdot 2^4 = 2 \cdot 16

⇒a_5 = 32

Therefore, the value of a_5 is, 32

3 0
3 years ago
A brownie recipe calls 1 2/3 cups of nuts. Ethan wants to use only half of this amount.
7nadin3 [17]

c. 5/6 cups

Step-by-step explanation:

1 2/3 = 5/3

5/3= 1.666

1.66÷2= 0.833

When we divide. the number should equal 0.833

8/3= 2.66 nope

10/3= 3.33 nope

5/6= 0.833 yes

6/5= 1.2 nope

3 0
3 years ago
6(33 - w) = 90 solve for w entre your answer in the box w =
aliina [53]

Answer:

w = 18

Step-by-step explanation:

6(33 - w) = 90

33 - w = 15

-w = -18

w = 18

5 0
2 years ago
I need help solving this question please :)
dsp73

Answer:

um can you pleasee take a clearer picture thankyou I cant see the things inside the circle properly

Step-by-step explanation:

3 0
3 years ago
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