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3 years ago

11

Sarah backstrokes at an average speed of 8 meters/second and swims for 250 seconds, how far did she swim?

1 answer:

garri49 [273]3 years ago

5 0

Answer:

2000 meters in 250 seconds

Step-by-step explanation:

250*8

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Taylor and Katy repeatedly toss a fair coin. Katy wins if heads are thrown, Taylor wins if tails are thrown, and the game ends w

ehidna [41]

Answer:

25%

Step-by-step explanation:

In order to find the chance/probability that Katy wins we need to first find the probability of her winning a single coin toss and then multiply it twice. This is because Katy has 1 win already and needs two more win the entire game. Since a coin toss only has 2 options and only 1 of those outcomes will cause Katy to win, then this means that the probability of Katy winning is 1/2 or 50%. Now we can multiply this probability twice to get the probability of Katy winning the entire game

1/2 * 1/2 = 1/4 or 25%

5 0

2 years ago

Determine the measure of angle b, and describe the relationship between the two angles shown.

Lana71 [14]

Answer:

b=130°

Step-by-step explanation:

The relationship between these two angles is about the fact that they are supplementary

i.e their sum is 180°

5 0

2 years ago

A clownfish is 2 meters below the surface of the ocean. How does its distance from the surface compare to the vertical distance

mina [271]

Answer: Um...is there supposed to be a link? I'll edit my answer if there is.

5 0

2 years ago

An international company has 12,500 employees in one country. If this represents 27.7% of the company's employees how many emplo

Eddi Din [679]

Answer:

45,126

Step-by-step explanation:

1% of the company = 12,500 ÷ 27.7 ≈ 451.2635379

100% of the company = 451.263579 × 100

= 45,126.3579

≈ 45,126 (round off since there is no 0.3579 employees)

8 0

2 years ago

a cell phone company plans to market a new smartphone. they have already sold 612 units durning the first week of the campaign.

Vadim26 [7]

The first term is 612.

The common ratio is 1.08 and

The recursive rule is $a_{n} = a^{n-1} \times r$

<u>Step-by-step explanation:</u>

the question to the problem is to write the values of the first term, common ratio, and expression for the recursive rule.

<u>The first term :</u>

In geometric sequence, the first term is given as $a_{1}$ .

⇒ $a_{1} = 612$

Now, the geometric sequence follows as 612, 661, ........

<u>The common ratio (r) :</u>

It is the ratio between two consecutive numbers in the sequence.

Therefore, to determine the common ratio, you just divide the number from the number preceding it in the sequence.

⇒ r = 661 divided by 612

⇒ r = 1.08

<u>To find the recursive rule :</u>

A geometric series is of the form a,ar,ar2,ar3,ar4,ar5........

Here, first term $a_{1} = a$ and other terms are obtained by multiplying by r.

Observe that each term is r times the previous term.
Hence to get nth term we multiply (n−1)th term by r .

The recursive rule is of the form $a_{n} = a^{n-1} \times r$

This is called recursive formula for geometric sequence.

We know that r = 1.08 and $a_{1}$ = 612.

To find the second term $a_{2}$ , use the recursive rule $a_{n} = a^{n-1} \times r$

⇒ $a_{2} = a^{2-1}\times r$

⇒ $a_{2} = a^{1}\times r$

⇒ $a_{2} = 612\times 1.08$

⇒ $a_{2} = 661$

3 0

3 years ago