Ask question

Ask question

All categories

3 years ago

11

How to do? Can anyone help me please? I will appreciate that a lot!

1 answer:

Nitella [24]3 years ago

4 0

Triangle ABD is i<span>nscribed in circle and </span>has hypotenuse as circle's diameter so angle ABD must be 90°

Since it is parallelogram, ∠ABD = ∠BDC = 90° and it is given that ∠ADB = 30°

So we have ∠CDO = ∠CDB + ∠ADB = 30° + 90° = 120°

Final answers: ∠CDO = 120° and ∠ABD = 90°

You might be interested in

A right cylindrical container perfectly holds 5 tennis balls placed one above the other. The radius of each ball is 3.35 centime

mash [69]

Answer: 394 cm3

Step-by-step explanation:

volume of cylinder - volume of 5 balls=extra volume

voc=πr2h=1181.09

pi=22/7

r=3.35

h= 5 x diameter of ball=33.5 (diameter = 2r)

vo5b=5(4/3πr3)=787.4

r=3.35

ev=voc-vo5b

=393.69

ROUND TO 394

5 0

3 years ago

A manufacturer of televisions subjects the equipment to a comprehensive testing process for all essential functions before the t

Vikki [24]

Answer:

The value is $P(X \ge 9) = 0.9138$

Step-by-step explanation:

From the question we are told that

The probability of passing the test is $p = 0.95$

The sample size is n = 10

Generally the distribution of the comprehensive testing of equipment follows a binomial distribution

i.e

$X \~ \ \ \ B(n , p)$

and the probability distribution function for binomial distribution is

$P(X = x) = ^{n}C_x * p^x * (1- p)^{n-x}$

Here C stands for combination hence we are going to be making use of the combination function in our calculators

Generally the probability that at least 9 pass the test is mathematically represented as

$P(X \ge 9) = P(X = 9 ) + P(X = 10 )$

=> $P(X \ge 9) = [^{10}C_9 * (0.95)^9 * (1- 0.95)^{10-9}] + [^{10}C_{10} * (0.95)^{10} * (1- 0.95)^{10-10}]$

=> $P(X \ge 9) = [0.3151] + [0.5987]$

=> $P(X \ge 9) = 0.9138$

7 0

3 years ago

your mother brought a three -liter bottle of water. When she got home,she discovered a small leak in the bottom and asked you to

Ivahew [28]

One jug would be full and the other jug would half to be 1/4

8 0

3 years ago

Read 2 more answers

Determine the value of y if x is -10:<br> y= l x -9 l +2

cricket20 [7]

Answer:

y = 21

Step-by-step explanation:

y = | x - 9 | + 2 ( substitute x = - 10 )

= | - 10 - 9 | + 2

= | - 19 | + 2

= 19 + 2

= 21

8 0

3 years ago

Explain how to determine if the sum of two integers with different signs is positive or negative

Strike441 [17]

The sum of 2 integers with different signs is the difference between the two integers, the sign will be the same as the sign of the bigger number.

7 0

3 years ago