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yKpoI14uk [10]
3 years ago
11

Can someone help me I don't know how to do this!! Thank you

Mathematics
1 answer:
sdas [7]3 years ago
6 0
The answer is 1 2/3 hope this helped

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A screening test for a disease shows a positive result in 91% of all cases when the disease is actually present and in 7% of all
Jobisdone [24]

Answer:

0.0713 = 7.13% probability that the result is positive.

Step-by-step explanation:

Probability of a positive test:

91% of 1/650(has the disease).

7% of 1 - 1/650 = 649/650(does not have the disease). So

p = 0.91\frac{1}{650} + 0.07\frac{649}{650} = \frac{0.91 + 0.07*649}{650} = 0.0713

0.0713 = 7.13% probability that the result is positive.

4 0
3 years ago
A regular polygon has an interior angle of approximately 158.8°.
Step2247 [10]

Answer:

  • 17 sides

Step-by-step explanation:

<u>Property of regular polygons:</u>

  • Sum of Interior Angles = (n−2) × 180°, where n is number of sides

<u>In our case we have:</u>

  • 158.8×n = (n - 2)×180
  • 180n - 158.8n = 360
  • 21.2n = 360
  • n = 360/21.2
  • n = 17
5 0
3 years ago
Assume 450,000 people line up on the streets to see the macys thanksgiving parade in 2012. If attendance is expected to increase
Helga [31]

Answer:

Step-by-step explanation:

130/100*450000=585,000 people

6 0
3 years ago
The sales tax rate is 3%. If Tanvi buys a balance beam priced at $648, how much tax will she pay?
lesya [120]
She will pay $19.44

I asked Siri, "what is 3% of $648"
4 0
3 years ago
A cupboard is 1.2 m wide.
Snezhnost [94]

Answer:

cupboard is 1.2 m wide.

Will a stick 1m 5cm long fit across the cupboard?

Give reasons for your answer

5 0
2 years ago
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