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3 years ago

HELPP

1 answer:

8 0

Answer
A small class has five boys and six girls. A group of four students are to be selected at random to interview a new school director. a) Find the probability that the group contains at least one boy. b) Find the probability that the majority of the group is girls. c) Given that the group contains at least one boy, what is the chance that the boys are in the majority?

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Sarah's savings account balance changed by $34 one week by -$67 the next week which amount represents the greatest change

Sophie [7]

Getting $34 in your bank account is not as much as losing $67. The greatest change was the loss of $67 (-$67)

6 0

4 years ago

(PLEASE HURRY I NEED IT TODAY)

slega [8]

Answer:

1) Reflection in the x-axis

A' = (-2, -3)

2) Rotation of 180° clockwise about the origin

A'' = (2, 3)

3) Translation of 3 units down and 4 units to the right

A''' = (6, 0)

Step-by-step explanation:

The transformations are as follows;

1) Reflection in the x-axis

Here the x-coordinate is the same and the y-coordinate changes sign.

Therefore, we have;

A (-2, 3)

After reflection in the x-axis becomes A' = (-2, -3)

2) Rotation of 180° clockwise about the origin

When, a point (x, y) is rotated 180° clockwise about the origin, it becomes (-x, -y)

Therefore, we have;

A' = (-2, -3) becomes A'' = (2, 3)

3) Translation of 3 units down and 4 units to the right

Translation of 3 units down and 4 units to the right = $T_{(4, -3)$

Which gives

A''' = (2 + 4, 3 - 3) = (6, 0).

6 0

3 years ago

Mac hine A pops 12,75 ounces of popcorn in 3 minutes. Machine B pops 18 ounces of popcorn in 4minutes. If each machine pops popc

Nataly [62]

yes. Machine A pops 42.5 ounces of popcorn in 10 minutes. Machine B pops 45 ounces of popcorn in 10 minutes. Add the two to get 87.5 ounces. 8 times 9 is 72 which is less than 87.5 ounces

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4 years ago

Daniel is adding a metal border to a company's lawn to stop the grass growth. The length of the lawn is 42 yards and the width i

Monica [59]

Hi!

you are trying to find the perimeter of the lawn and by the looks of it, it's a rectangual so you would add up all the side.
42+42= 84
27+27= 54
84+54= 138
Daniel will need 138 metal border. :)

3 0

3 years ago

elijah has three neighbors the sum of all the neighbors ages is 80 the second-oldest neighbor is 28 years old the difference bet

Nata [24]

Ans:

Step-by-step explanation:

Let the age of oldest neighbour be x

let the age of youngest neighbour be x-30

According to question,

x+28+x-30 = 80

or, 2x +28-30=80

or,2x+28=80+30

or, 2x=110-28

or, 2x=82

or, x=82/2 = 41

Therefore, The age of oldest neighbour is 41 years

& The age of youngest neighbour= x-30 = 41-30 = 11 years!

6 0

3 years ago