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alina1380 [7]
2 years ago
10

An ice cream truck was parked near a beach, and some kids ran to it and formed a line. Then, more kids joined the line by fillin

g in each empty space between the kids in the original line. This happened two more times before the ice cream truck driver finally came back from his lunch break, and there were 49 kids in line. How many kids were in the first line?
Mathematics
1 answer:
Irina-Kira [14]2 years ago
3 0

Answer:

7

Step-by-step explanation:

So, we know that this process happened 3 times in total. The original amount of kids we can call x, so the next wave filled in the gaps inbetween, so we call that amount x-1, the next wave would be (x+x-1)-1 or 2x-2, and the last would be 4x-4

adding this all up we get 8x-7=49, so 8x = 56 or x = 7

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rjkz [21]

Answer:

(36+22+19)=77

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6 0
3 years ago
The circumference of a circle is 23π m. What is the area, in square meters? Express your answer in terms of \piπ
LenaWriter [7]

Answer:

Area of the circle =   \frac{529}{4}  π  m²    or      132.25 π  m²

Step-by-step explanation:

To find the area, we will follow the steps below.

First write down the formular for the circumference of a circle, then use the formula to find the radius of the circle after which you can now find the area of the circle.

That is;

C = 2πr

where c is the circumference of the circle and   r is the radius of the circle

From the question given, circumference C = 23π

23π = 2π r

Divide both-side of the equation by 2π

23π/2π  =  2πr/2π

23/2   =  r

radius =   \frac{23}{2}  m

Formula for calculating the area of a circle is given by;

A = πr²

where A= area of the circle   and   r is the radius of the circle

A = π ( \frac{23}{2} )²

A = \frac{529}{4}  π  m²    or      132.25 π  m²

Area of the circle =   \frac{529}{4}  π  m²    or      132.25 π  m²

6 0
3 years ago
Simplify the expression.<br> <img src="https://tex.z-dn.net/?f=%5Csqrt%7B28c%5E%7B5%7Dd%5E%7B2%7D%20%7D" id="TexFormula1" title=
Flura [38]
Hopefully this helps

5 0
3 years ago
I need help please please ​
Sliva [168]

Answer:

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Step-by-step explanation:

5 is half of 10 so you can multiply by two and get 6/10 making a 1 hour diffrence

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3 years ago
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3 years ago
Read 2 more answers
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