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liberstina [14]
3 years ago
11

Help!! For this question I got 254.34 as my final answer but when I checked my answer it told me I was wrong?

Mathematics
1 answer:
Ugo [173]3 years ago
5 0

Answer:

a = 254.5 mm² ( if using accurate value of π)

a = 254.4 mm² (if using 3.14 as approximate value of π)

Step-by-step explanation:

a = πr²

a = π * 9²

a = π * 81

(note using π = 3.1415926536)

a = 254.4690049408

Rounded

a = 254.5 mm²

(a = 254.4 If using π = 3.14)

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PLZ HELP ME PLZZZ 15 PTS Mr. Rodriguez asked 60 randomly chosen students from each grade level at Willowbrook School about their
vredina [299]
12/60 students chose science fiction

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60x = 1800

x = 30

30/150 students are assumed to prefer sf

30/150 = x/100

150x = 3000

x = 20

20/100 students are likely to prefer sf

Mr. Rodriguez made a reasonable estimate for the approximate percentage of students that prefer science fiction, because if 12/60 is equivalent to 30/150 which refers to the number of students who can be assumed to prefer science Fiction out of the whole school. Considering we need to identify what 30/150 as a percentage is, we can reduce it down to 1/5 to make I easier, then divide 1 by 5 to get .2
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8 0
3 years ago
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lukranit [14]

Answer:

$0.23 or D

Step-by-step explanation:

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3 years ago
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GarryVolchara [31]
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6 0
3 years ago
Suppose a triangle has two sides of length 32 and 35, and that the angle
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Answer:

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Use the law of cosines:  c^2=a^2+b^2-2abcos(C)

Plug in the two sides we know (into a and b) and the angle we know (into angle C).

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(Note: Make sure you're in Degrees mode.)

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