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3 years ago

Find the area of a circle with a radius of 7 feet

Mathematics

1 answer:

-Dominant- [34]3 years ago

7 0

Answer:

153.938 ft²

Step-by-step explanation:

πr² (area of a circle where r is the radius

π(7)²

π(49)

π(49)≈153.938

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Let V be the event that a computer contains a virus, and let W be the event that a computer contains a worm. Suppose P(V) = 0.17

ArbitrLikvidat [17]

Answer: 0.82

Step-by-step explanation:

The probability of the computer not containing neither a virus nor a worm is expressed as P( $V^{C}$ ∩ $W^{C}$ ) , where P( $V^{C}$ ) is the probability that the event V doesn't happen and P( $W^{C}$ ) is the probability that the event W doesn't happen.

P( $V^{C}$ )= 1-P(V) = 1-0.17 = 0.83

P( $W^{C}$ )=1-P(W) = 1-0.05 = 0.95

Since $V^{C}$ and $W^{C}$ aren't mutually exclusive events, then:

P( $V^{C}$ ∪ $W^{C}$ ) = P( $V^{C}$ ) + P( $W^{C}$ ) - P( $V^{C}$ ∩ $W^{C}$ )

Isolating the probability that interests us:

P( $V^{C}$ ∩ $W^{C}$ )= P( $V^{C}$ ) + P( $W^{C}$ ) - P( $V^{C}$ ∪ $W^{C}$ )

Where P( $V^{C}$ ∪ $W^{C}$ ) = 1 - 0.04 = 0.96

Finally:

P( $V^{C}$ ∩ $W^{C}$ ) = 0.83 + 0.95 - 0.96 = 0.82

5 0

2 years ago

Which of these triangles appears not to be congruent to any others shown

Wittaler [7]

Answer:

B, C, F

Step-by-step explanation:

B- has different lengths for each side and different angles

C-has different lengths for each side and different angles

F-has different lengths for each side and different angles

Non congruent triangles means if shape is reflected or rotated they would not look the same. Congruent triangles have same equal length and angles are equal in measure.

3 0

2 years ago

PLEASE HELP MEE!!!

maks197457 [2]

Answer:

The 8th graders get the points.

Step-by-step explanation:

Kates best friend did not jump more than 6 ½ feet, in a fraction the amount kate's best friend jumped is 6.38 feet. There for the 8th graders get the points.

6 0

3 years ago

I NEED HELP PLEASE!!!!!!!

Nostrana [21]

1) 7 hours and 33 minutes
2) 28
3) y = 7
4) a times a times a times a

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2 years ago

What is the value of y for the parallelogram shown?

dybincka [34]

Opposite angles in a parallelogram have to be equal so

3y=66
y=22

3 0

2 years ago

Read 2 more answers