1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Alborosie
3 years ago
7

Find the measure of arc DC, in degrees, where the ? is shown. D ? 49° 70° с B​

Mathematics
1 answer:
bazaltina [42]3 years ago
4 0

Answer:

m(arc CD) = 122°

Step-by-step explanation:

Since, measure of an arc = 2 × (Angle subtended by the arc at the circumference of the circle)

m(arc CD) = 2[m(∠CBD)]

By triangle sum theorem in ΔBCD,

m∠CBD + m∠BDC + m∠DCB = 180°

m∠CBD + 49° + 70° = 180°

m∠CBD = 180° - 119°

m∠CBD = 61°

Therefore, m(arc CD) = 2 × 61°

m(arc CD) = 122°

You might be interested in
Find the zeros of polynomial function and solve polynomials equations.<br> f(x)=x^2-x-90
victus00 [196]

The zeros are:

10 and -9

(ten and negative-nine)

6 0
4 years ago
Is 9,156 divisible by 2,3,4,5,6,9,10
LekaFEV [45]

No, 9,156 divisible by 1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84, 109, 218, 327 , 436, 654 , 763, 1308, 1526, 2289, 3052, 4578, and 9156

8 0
3 years ago
Geometry math question no Guessing and Please show work thank you
mr Goodwill [35]

(12 - 2) * 180 = 1,800/12 = 150

(8 - 2) * 180 = 1,080/8 = 135

B. 8 sides

3 0
3 years ago
Read 2 more answers
A doctor is measuring the average height of male students at a large college. The doctor measures the heights, in inches, of a s
RoseWind [281]

Answer:

There is a 95% confidence that the true mean height of all male student at the large college is between the interval (63.5, 74.4).

Step-by-step explanation:

The (1 - <em>α</em>)% confidence interval for population mean is:

CI=\bar x\pm z_{\alpha/2}\times\frac{\sigma}{\sqrt{n}}

The (1 - α)% confidence interval for population parameter implies that there is a (1 - α) probability that the true value of the parameter is included in the interval.

Or, the (1 - α)% confidence interval for the parameter implies that there is (1 - α)% confidence or certainty that the true parameter value is contained in the interval.

The 95% confidence interval for the average height of male students at a large college is, (63.5 inches, 74.4 inches).

The 95% confidence interval for the average height of male students (63.5, 74.4) implies that, there is a 0.95 probability that the true mean height of all male student at the large college is between the interval (63.5, 74.4).

Or, there is a 95% confidence that the true mean height of all male student at the large college is between the interval (63.5, 74.4).

4 0
4 years ago
Simplify.<br> <img src="https://tex.z-dn.net/?f=%5Csqrt32%20%2B%20%5Csqrt16%2B%20%5Csqrt8" id="TexFormula1" title="\sqrt32 + \sq
svetoff [14.1K]

Answer:

4 + 6 \sqrt{2}

Step-by-step explanation:

\sqrt{32}  +  \sqrt{16}  +  \sqrt{8}

\sqrt{32}  =  \sqrt{4 \times 4 \times 2}  =  4\sqrt{2}

\sqrt{16}  =  \sqrt{4 \times 4}  = 4

\sqrt{8}  =  \sqrt{2 \times 2 \times 2}  = 2 \sqrt{2}

4 +  4\sqrt{2}  + 2 \sqrt{2}  = 4 + 6 \sqrt{2}

5 0
3 years ago
Other questions:
  • How to convert decimals into fractions 5.32?
    9·1 answer
  • What is the solution of log2x − 6 (256) = 4?
    12·2 answers
  • 9u^2^v and which term are like terms?<br> A.6u^2<br> B.9uv^2<br> C.15u^2^v<br> D.13u^2^v^2
    7·1 answer
  • Katie wants to buy a bicycle that costs $129. This as $24 more than 3 times what she saved last month. How much did she save las
    13·1 answer
  • X × 0.7= 6 what does X equal
    14·2 answers
  • Rules for Dividing Two Integers:
    11·2 answers
  • 10 POINTS AND BRAINLIEST! <br><br> Calculate the area of the trapezoid, which is not drawn to scale.
    5·1 answer
  • Which set of ordered pairs represents a function?
    11·1 answer
  • Which of the following does not cycle into the atmosphere? a. the carbon cycle b. the phosphorus cycle c. the nitrogen cycle d.
    12·2 answers
  • What is the maximum value of P = 24x + 30y, given the constraints on x and y listed below?
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!