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3 years ago

12

Drew does push-ups every three days starting in January 3.He does sit ups every four days starting on January 4.on which days in

January will he do both push ups and sit ups?use words,numbers,or models to justify your answer.

1 answer:

shepuryov [24]3 years ago

3 0

January 12 because he will be on his 4th day of push ups and his 3rd day of situps

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The standard deviation of a probability distribution is a: A. measure of variability of the distribution B. measure of skewness

GuDViN [60]

Answer:

The standard deviation of a probability distribution is a measure of variability of the distribution.

Step-by-step explanation:

We have been given an incomplete statement. We are asked to complete the given statement.

We know that standard deviation is measure of variability or dispersion of a set of data values.

It tells up how much a data point is spread out from the average or mean of the data set.

Therefore, option A is the correct choice.

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2 years ago

Casey is six times as old as Ralph. In two years, she will be four times as old as Ralph. How old is each of them now?

lisov135 [29]

Ralph is 3 years old

Casey is 18 years old

Step-by-step explanation:

Let the age of Ralph be x

Then Casey is 6 times as old as Ralph will be 6x

In two years

Ralph =x+2

Casey=6x+2 ⇒ 4(x+2)

Equate the two equations for Casey as

6x+2 = 4x+8

6x-4x=8-2

2x=6

x=6/2= 3

Current age;

Ralph= x= 3 years old

Casey=6x = 6*3= 18 years

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Forming expressions and solving equations;brainly.com/question/1280754

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2 years ago

To determine the number of trout in a lake, a conservationist catches 180 trout, tags them and throws them back into the lake.

GaryK [48]

The ratio of the trout with tags that are caught and the total trout with tags is first calculated.

r = 12 trout / 180 trout = 1/15

Then, we divide the number of trouts caught without tag by the value obtained above.

N = (48 - 12) / (1/15) = 540

Then, we add the number obtained above and 180.
T = 540 + 180 = 720

ANSWER: 720

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3 years ago

F(x)=3x when x= -2,0,5

ololo11 [35]

Answer:

F(x)=3x when x= -2,0,5

<h2>15</h2>

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2 years ago

2Y - 1.7 =3.3 <br><br> HELP !!!!!

bogdanovich [222]

Answer:

2.5

Step-by-step explanation:

Simplifying

2y + -1.7 = 3.3

Reorder the terms:

-1.7 + 2y = 3.3

Solving

-1.7 + 2y = 3.3

Solving for variable 'y'.

Move all terms containing y to the left, all other terms to the right.

Add '1.7' to each side of the equation.

-1.7 + 1.7 + 2y = 3.3 + 1.7

Combine like terms: -1.7 + 1.7 = 0.0

0.0 + 2y = 3.3 + 1.7

2y = 3.3 + 1.7

Combine like terms: 3.3 + 1.7 = 5

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Divide each side by '2'.

y = 2.5

Simplifying

y = 2.5

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2 years ago

Read 2 more answers