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3 years ago

Given: is a diameter m 1 = 100° m BC= 30° m AD= 50 80 100

Mathematics

2 answers:

olganol [36]3 years ago

8 0

Answer:

100

Step-by-step explanation:

1=ad=100

and I need more characters so don't mind me.

Gemiola [76]3 years ago

8 0

Answer:

The correct option is 3. The measure of arc AD is 100°

Step-by-step explanation:

Given information: BD is a diameter, ∠1 = 100° and arc BC=30°.

The central angle of an arc is the measure of arc.

From the given figure it is clear that the central angle of arc AD is equal to the angle 1.

$Arc(AD)=\angle 1$

It is given that ∠1 = 100°

$Arc(AD)=100^{\circ}$

The measure of arc AD is 100°, therefore the correct option is 3.

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A screening test for a newly discovered disease is being evaluated for its performance as a screening test. In order to determin

Elena-2011 [213]

Answer:

- Sensitivity = 62.7 %

- specificity = 74.9 %

- positive predictive value = 45.2 %

- negative predictive value = 85.9 %

- Accuracy of the test = 71.9 %

Step-by-step explanation:

Given the data in th question;

CONDITION POSITIVE CONDITION NEGATIVE TOTAL

TEST POSITIVE 42 51 93

TEST NEGATIVE 25 152 177

TOTAL 67 203 270

so; A=42, B=51, C=25 and D=152

Sensitivity = [A / ( A + C) ]×100= [42 /( 42 + 25)]×100 = [42 / 67] 100=

Sensitivity = 62.7 %

specificity = [D / ( D + B) ]×100= [152 /( 152 + 51)]×100 = [152 / 203] 100=

specificity = 74.9 %

positive predictive value = [A / ( A + B) ]×100 = [42 /( 42 + 51)]×100 =[42/93] 100

positive predictive value = 45.2 %

negative predictive value = [D / ( D + C) ]×100 = [152 /( 152 + 25)]×100 =[152/177] 100

negative predictive value = 85.9 %

Accuracy of the test = [A + D / ( A+B+C+D)] = [42 + 152 / ( 42+51+25+152)]

= [ 194 / 270 ]

Accuracy of the test = 71.9 %

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2 years ago

The linear pair postulate states that if two angles form a linear pair, then they are __________ angles.

Nataly_w [17]

Answer: "supplementary" .
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3 years ago

Find the value of x.<br> 66°<br> 42°

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Answer:

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2 years ago

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Answer:

below( hope this helps )

Step-by-step explanation:

2. No because we don't know if the triangles are right triangles.

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3 years ago

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jek_recluse [69]

Answer:

Equation: y = $\frac{7}{4}$ x

21/2 cups of water

Step-by-step explanation:

Plug in 7 as y and 4 as x

7 = 4k

Find k

k = 7/4

Then plug k into th equation

y = 7/4 x

For the second part of the question:

Plug in x which is 6 into the bolded equation.

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21/2 cups of water

5 0

2 years ago

Read 2 more answers