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3 years ago

Use the diagram. AB is a diameter, and AB is perpendicular to CD. The figure is not drawn to scale.

Mathematics

1 answer:

Stells [14]3 years ago

4 0

Answer:

i) mAB = mBD (Not True)

Step-by-step explanation:

ii) mAC = mAD , CD is a chord and AB is a diameter. CD⊥AB and hence AC = AD,

Equal chords have equal segments . Hence it is true

iii) ∠BDA = ∠BCA true

iv) ∠PBC = ∠DBA True

Hence the three options are correct except the one.

So our answer is option A mAB = mBD (Not True)

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Determine the unknown angle measures in the figure

dusya [7]

Answer:

angle 3- 131

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6 0

3 years ago

Read 2 more answers

Which ordered pair is a solution to this equation?

yarga [219]

Let's test each alternative :

2 x - 9 y = 38 ( 7,5 ) :

( 2 * 7 ) - ( 9 * 5 ) = 38

14 - 45 = 38

-31 ≠ 38 ( wrong )

( 4 , - 1 ) :

( 2 * 4 ) - ( 9 * ( - 1 ) = 38

8 + 9 = 38

17 ≠ 38 ( wrong )

( 3 , - 3 ) :

2 * ( 3 ) - ( 9 * ( - 3 ) = 38

6 + 27 = 38

33 ≠ 38 ( wrong )

( 1 , - 4 ) :

2* ( 1 ) - 9 * ( - 4 ) = 38

2 + 36 = 38

38 = 38 ( Correct alternative )

( 1 , - 4 ) is correct alternative

3 0

3 years ago

If A = {2, 3, 4, 5} B = {4, 5, 6, 7} C = {6, 7, 8, 9} D = {8, 9, 10, 11}, find (A ∪ B) ∪ C

Iteru [2.4K]

Answer:

(AUB)UC=2,3,4,5,6,7,8,9

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Step-by-step explanation:

7 0

3 years ago

Find the percent of area under a normal curve between the mean and the given number of standard deviations from the mean. (Note

coldgirl [10]

Answer:

15.86%

Step-by-step explanation:

When the distribution is normal, we use the z-score formula.

In a set with mean $\mu$ and standard deviation $\sigma$ , the zscore of a measure X is given by:

$Z = \frac{X - \mu}{\sigma}$

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

Percent of area between the mean and 0.20 standard deviations from the mean:

pvalue of Z = 0.2 subtracted by the pvalue of Z = -0.2

Z = 0.2 has a pvalue of 0.5793

Z = -0.2 has a pvalue of 0.4207

0.5793 - 0.4207 = 0.1586

So this percentage is 15.86%

8 0

4 years ago

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mixas84 [53]

Answer:

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Step-by-step explanation:

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