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3 years ago

Write an expression to represent the area of this figure.. its a circle with the diameter of 2x+4

1 answer:

5 0

The area of a circle is pi times the radius of the circle squared. The radius of a circle is half the length of the diameter, so you can divide 2x+4 by 2 to get the radius, which would be x+2. Then, you plug it into the formula to get pi times (x+2)^2. You can FOIL that out to get x^2 + 4x + 4 and multiply that by pi, or you can leave it as it was before FOILing.

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Larry measures the lens on a magnifying glass and calculates that it has an area of 50.24 square centimeters. What is the lens's

alina1380 [7]

Answer:

I think it might be = 16

Step-by-step explanation:

50.24/3.14

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3 years ago

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Some one please help me Thx

seraphim [82]

Answer:

3/5

Step-by-step explanation:

3 of the 5 are shaded or indicated

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A bag contains 19 red,15 yellow and 14 blue marbles. what is the probability of pulling out a blue marble, followed by a red mar

irina1246 [14]

Answer:

133/1152

Step-by-step explanation:

A probability is the number of desired outcomes divided by the number of total outcomes.

In this question:

19+15+14 = 48 marbles

Of which 19 are red, 15 are yellow and 14 are blue.

What is the probability of pulling out a blue marble, followed by a red marble, if you replace the blue marble first

Blue marble

48 marbles, of which 14 are blue.

So $P_{A} = \frac{14}{48} = \frac{7}{24}$

Red marble

48 marbles, of which 19 are red.

So $P_{B} = \frac{19}{48}$

Both:

$P = P_{A} \times P_{B} = \frac{7}{24} \times \frac{19}{48} = \frac{133}{1152}$

So the correct answer is:

133/1152

6 0

3 years ago

Determine if the sequence is arithmetic, geometric, or neither. For arithmetic and geometric sequences, identify the common diff

pogonyaev

9514 1404 393

Answer:

Arithmetic
common difference = 7

Step-by-step explanation:

First differences are ...

-38 -(-45) = 7

-31 -(-38) = 7

-24 -(-31) = 7

The first differences are constant, so this is an arithmetic sequence with a common difference of 7.

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3 years ago

A clothing store is going out of business sale. they are selling pants for 8.99

krek1111 [17]

Answer:

x/3-10=8

x/3=18

x=48

Step-by-step explanation:

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3 years ago