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Tresset [83]
3 years ago
9

A triathlete swims 3 km in 1 hr. Then bikes 50 km in 3 hrs. Finally, the triathlete runs

Mathematics
1 answer:
deff fn [24]3 years ago
6 0

Answer:Let $d$ be the length of one segment of the race.

Average speed is total distance divided by total time. The total distance is $3d$, and the total time is $\frac{d}{3}+\frac{d}{20}+\frac{d}{10}=\frac{29d}{60}$.

Thus, the average speed is $3d\div\left(\frac{29d}{60}\right)=\frac{180}{29}$. This is closest to $6$, so the answer is $\mathrm{(D)}$

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Can someone help me with this plz I am so confused??
ruslelena [56]

F= -1 2/3 or 5/3

In order to find the answer all you have to do is multiply both sides by -4/3.

-3/4f × -4/3 = f

-4/3 × 5/4 = -20/12

-20/12 simplified is -5/3 or -1 2/3

6 0
3 years ago
Read 2 more answers
Draw an area model that demonstrates that the quotient of 2080 and 40 is 52.
Scrat [10]

Area model is used to illustrate multiplication and division operations.

See attachment for the area model

The equation can be represented as:

\frac{2080}{40} = 52

Express 2080 as 1200 + 800 + 80

\frac{1200 + 800 + 80}{40}=52

Express as

\frac{1200 + 800 + 80}{40}=\frac{1200}{40} + \frac{800}{40} + \frac{80}{40}

Divide

\frac{1200 + 800 + 80}{40}= 30 + 20 + 2

See attachment for the area model

Read more about area models at:

brainly.com/question/18533236

7 0
2 years ago
Find the area of each figure below. Round to the nearest hundredth.​
geniusboy [140]

Answer:

Area of rectangle=9×17=153 SQ.ft

Area of semi-circle=π9'2/2

Area of traingle=(1/2)×7×9=31.5

7 0
4 years ago
Suppose that Frida selects a ball by first picking one of two boxes at random and then selecting a ball from this box at random.
BaLLatris [955]

Answer:

3/4

Step-by-step explanation:

Given the following :

Number of boxes = 2

First box :

White balls = 3

Blue balls = 2

Second box:

White balls = 4

Blue balls = 1

What is the probability that Frida picked a ball from the first box if she has selected a blue ball?

Probability (P) = (required outcome / Total possible outcomes)

Probability of picking first box : P(F) = 1/2

Probability of not picking second box :P(S) 1/2

Probability of picking blue from first box : P(B | F) = 3/5

Probability of picking blue, but not from first box : P(Blue not from second box) P(B|S) = 1/5

probability that Frida picked a ball from the first box if she has selected a blue ball?

P(F) * P(B|F) ÷ (P(F) * P(B|F)) + (P(S) * P(B|S))

(1/2 * 3/5) ÷ ((1/2 *3/5) + (1/2 * 1/5)

3/10 ÷ (3/10 + 1/10)

3/10 ÷ 4/10

3/10 * 10/4

= 3/4

7 0
3 years ago
At a certain company, the annual winter party is always held on the second of Friday of December. What is the latest possible da
vitfil [10]

Answer:

The latest possible date is December, 14th.

Step-by-step explanation:

Notice that the second Friday of December is n+7, where n is the date for the first Friday of December. So, the latest the first Friday, the latest the second. As the weeks have seven days, the first Friday will be between 1st and 7th of each month. So, the latest first Friday will be 7th. Therefore, the latest second Friday will be 14th.

7 0
3 years ago
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