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uysha [10]
3 years ago
12

Two circles have areas of 16π and 25π. Find the ratio of their circumferences.

Mathematics
1 answer:
adelina 88 [10]3 years ago
5 0

Answer:

4:5

Step-by-step explanation:

A=πr^{2}

16π =πr^{2}

r^2 = 16 & r^2 = 25

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Can i get some help with this
Olegator [25]

If we draw RU and RT we see the radii are perpendicular to the tangents, so TRU and TZU are supplementary. Since TZU=XZY=15 degrees, TRU=180-15=165 degrees. So the other side is 360-165=195 degrees as is the measure of arc TSU


Answer: 195 degrees



7 0
3 years ago
The medical laboratory claim that the mean turn-around time for the performance of the battery of tests on blood sample is 1.005
Shkiper50 [21]

Answer:

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Step-by-step explanation:

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7 0
2 years ago
A lot of 100 semiconductor chips contains 15 that are defective. three chips are selected at random from the lot without replace
Alex787 [66]
D=event that chip selected is defective
d=event that chip selected is NOT defective

Four possible scenarios for the first two selections:
P(DDD)=15/100*14/99*13/98=13/4620
P(DdD)=15/100*85/99*14/98=17/924
P(dDD)=85/100*15/99*14/99=17/924
P(ddD)=85/100*84/99*15/98=17/154

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5 0
3 years ago
VE
Firdavs [7]

Answer:

$4167

Step-by-step explanation:

Original Amount: $4167 (rounded)

First Year: $4167 + $416.7 = $4583.7

Second Year $4583.7 + $416.7 = 5000.4

8 0
3 years ago
Emiko needs to go to the dentist. It takes her 65 minutes to get there on her bike. This is 5 minutes shorter then twice the tim
kakasveta [241]

Answer:

30 minutes by bus

Step-by-step explanation:

Equation: b = bus

b = (65 - 5) / 2

b = 60/2

b = 30 mins

Please give Brainliest :)

6 0
3 years ago
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