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
OLEGan [10]
3 years ago
11

Help me with question 1 please

Mathematics
1 answer:
GrogVix [38]3 years ago
8 0

Answer:

DB = 6

Step-by-step explanation:

See the attached figure to the question.

Since O is the center of the given circle, so AB and CD are diameters of the circle.

Hence, AO = CO = OD = OB = radius of the circle = 6

In Δ OAC, we have AO = OC. Hence, ∠ A = ∠C = 60° {Given that ∠OAC = 60°}

So, ∠ AOC will automatically become 60°. {As the sum of all the angles of a triangle is 180°}

So, Δ AOC is equilateral triangle.

Now, ∠ AOC = ∠ BOD = 60°  {Since, they are vertically opposite angles}

Now, in Δ BOD, we have DO = OB. Hence, ∠ D = ∠ B = 60° {As the sum of all the angles of a triangle is 180°}

So, Δ BOD is also an equilateral triangle.

So, DB = BO = DO = 6. (Answer)

You might be interested in
Suppose the dealer incentive per vehicle for honda's acura brand in 2012 is thought to be bell-shaped and symmetrical with a mea
andreev551 [17]

Answer:

From $1600 to $3400.

Step-by-step explanation:

The Empirical Rule states that, for a normally distributed random variable:

68% of the measures are within 1 standard deviation of the mean.

95% of the measures are within 2 standard deviation of the mean.

99.7% of the measures are within 3 standard deviations of the mean.

In this problem, we have that:

Mean = 2500

Standard deviation = 300

What interval of dealer incentives would we expect approximately 99.7% of vehicles to fall within?

By the Empirical Rule, 99.7% fall within 3 standard deviations frow the mean. So

From 2500 - 3*300 = 1600 to 2500 + 3*300 = 3400.

8 0
3 years ago
A submarine is only allowed to change its depth by rising toward the surface in 60-meters stages. it starts off at (-340) meters
hichkok12 [17]

Answer:

2 stages

Step-by-step explanation:

3 0
2 years ago
Number three please !!!
kati45 [8]
I would say the answer is 5, please let me know if it’s right!
4 0
3 years ago
A submarine that is 245 feet below sea level descends 83 feet and then ascends
kirill115 [55]

Answer:

-225 ft

Step-by-step explanation:

Initial position:

  • - 245 ft

Movements:

  • - 245 - 83 + 103 = -225 ft

Final position is -225 ft, choice B

8 0
3 years ago
If someone could help it would be great :)
malfutka [58]

Answer:

2.2

Step-by-step explanation:

<u>  -6-5  </u> = -11/-5=2.2

-9-(-4)

3 0
3 years ago
Other questions:
  • Allyson can pay for her gym membership on a monthly basis, but if she pays for an entire year’s membership in advance, she’ll re
    10·1 answer
  • In 2012, the population of a City was 6.89 million. The exponential growth rate was 3.13% per year
    6·1 answer
  • Please need help on this thank you
    12·1 answer
  • Solve for d. 8/12 = 62/d
    10·2 answers
  • What is the next 2 numbers in the pattern 0.006, 0.06, 0.6, 6 ?
    11·2 answers
  • Please what is the answer?
    11·1 answer
  • Use the substitute method to solve the system of equations.
    5·1 answer
  • 98.25 centimeters converted to milimeters
    10·1 answer
  • I desperately need help!!! Any and all help is helpful!! Thank you if you help!!​
    10·2 answers
  • Solve the inequality for x -11 &lt; -18- 7/9x
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!