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LuckyWell [14K]

3 years ago

14

A radio station will announce the winner of a contest when 3,200 callers have phoned the station. At 3:00 p.m. 400 callers were

counted. At 4:00 p.m. 650 calls had been recorded. By 5:00 p.m. 950 calls had come into the station, and by 6:00 p.m. 1,300 calls had been counted. If the pattern continues, when will the radio station announce a winner?

1 answer:

arsen [322]3 years ago

5 0

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Find the radius and diameter of a circular puddle whose

o-na [289]

Answer:

$r = 35cm$

Step-by-step explanation:

Given

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Required

Determine the radius

Circumference (C) is calculated as:

$C = 2\pi r$

Where r represents radius

Substitute values for C and $\pi$

$220cm = 2 * \frac{22}{7} * r$

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Multiply through by 7/44

$\frac{7}{44} * 220cm = \frac{7}{44} * \frac{44}{7} * r$

$r = \frac{7}{44} * 220cm =$

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3 years ago

Use the following information to determine your answer: The length of a movie falls on a normal distribution. About 95% of movie

Elenna [48]

Answer:

$75= 119 -1.96 \sigma$

$\sigma = \frac{75-119}{-1.96}= 22.45$

And tha's equivalent to use this formula:

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Step-by-step explanation:

For this case the 95%of the values are between the following two values:

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And for this case we know that the variable of interest X "length of a movie" follows a normal distribution:

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We can estimate the true mean with the following formula:

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And tha's equivalent to use this formula:

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3 years ago

What is the value of X in the figure<br> X=...

Brrunno [24]

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3 years ago

Read 2 more answers

A beaded necklace is 2.5 feet long. Each bead is .25 inches wide & each pair of beads is separated by 1.25 inches of chain.

adelina 88 [10]

Answer:

There are <u>20 beads</u> on the necklace.

Step-by-step explanation:

Given:

A beaded necklace is 2.5 feet long. Each bead is .25 inches wide & each pair of beads is separated by 1.25 inches of chain.

Now, to find the number of beads on the necklace.

The length of necklace = 2.5 feet.

So, we convert feet into inches by using conversion factor:

<em>1 foot = 12 inches.</em>

<em>2.5 feet = 12 × 2.5 inches.</em>

<em>2.5 feet = 30 inches.</em>

<u>Thus, the length of necklace is 30 inches.</u>

Let the number of beads be $x.$

The width of each bead = 0.25 inches.

The each pair of beads is separated by 1.25 inches.

Now, we put an equation to get the number of beads:

$(0.25+1.25)x=30$

$0.25x+1.25x=30$

$1.50x=30$

<em>Dividing both sides by 1.50 we get:</em>

$x=20.$

<u><em>The number of beads = 20.</em></u>

Therefore, there are 20 beads on the necklace.

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There are 4 lunch choices in a school cafeteria: Salad, Pizza, Spaghetti, and Sub Sandwiches. The percentage of students that ch

Elina [12.6K]

I think it would be 300, because 15% of x=45, so .15x=45, x= 45/.15=300

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3 years ago