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Arisa [49]
3 years ago
14

Please help. urgent!

Mathematics
1 answer:
Dvinal [7]3 years ago
6 0

the answer is 5 pi/6.........

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I need the answer to 7 please
bija089 [108]

7. a

Given,

Diameter = 16 feet

So, radius = 16 feet/2 = 8 feet

Circumference = 2πr

So, circumference of this circle

= 2πr

= 2 × 3.14 × 8 feet

= 3.14 × 16 feet

= 50.24 feet

b.

Given,

Diameter = 16 feet

So, radius = 16 feet/2 = 8 feet

Area = πr²

So, area of this circle

= 3.14 × (8 feet)²

= 3.14 × 64 feet²

= 200.96 feet²

6 0
2 years ago
Read 2 more answers
Javon is helping his dad build a tree house. He has a piece of trim that is 11 feet long.
posledela

Answer:

Step-by-step explanation:

1 yard = 3 feet

11 feet * (1 yard)/(3 feet) =11/3 yards = 3⅔ yards

Javon can cut three one-yard pieces. ⅔ yard is left over.

6 0
2 years ago
On any given day, the probability that a large local river is polluted by carbon tetrachloride is 0.12. Each day, a test is cond
babymother [125]

Answer:

a) 0.2416

b) 0.4172

c) 0.0253

Step-by-step explanation:

Since the result of the test should be independent of the time , then the that the test number of times that test proves correct is independent of the days the river is correct .

denoting event a A=the test proves correct and B=the river is polluted

a) the test indicates pollution when

- the river is polluted and the test is correct

- the river is not polluted and the test fails

then

P(test indicates pollution)= P(A)*P(B)+ (1-P(A))*(1-P(B)) = 0.12*0.84+0.88*0.16 = 0.2416

b) according to Bayes

P(A∩B)= P(A/B)*P(B) → P(A/B)=P(A∩B)/P(B)

then

P(pollution exists/test indicates pollution)=P(A∩B)/P(B) = 0.84*0.12 / 0.2416 = 0.4172

c) since

P(test indicates no pollution)= P(A)*(1-P(B))+ (1-P(A))*P(B) = 0.84*0.88+  0.16*0.12 = 0.7584

the rate of false positives is

P(river is polluted/test indicates no pollution) = 0.12*0.16 / 0.7584 = 0.0253

4 0
3 years ago
Translate the phrase, then simplify. Subtract eighty-two from one hundred fifty
emmasim [6.3K]

Answer:

It is 18

Step-by-step explanation:100-82=18

7 0
3 years ago
What is 2(5-3v)+9v=28?
almond37 [142]
10-6v+9v=28
10+3v=28
-10 -10
3v=18
3 3
v=6
7 0
3 years ago
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