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Artemon [7]
3 years ago
8

The minute hand of a clock is 15 cm long how far does the tip of the minute and travel in 20 minutes

Mathematics
1 answer:
LUCKY_DIMON [66]3 years ago
4 0
20 mins means the hand moves 120 degrees around the clock.

The formula to find the arc length is 2pi×r×a/360

2×pi×15×1/3=30pi×1/3=10pi

so i think the answer would be 10 pi cm
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Zachary can't believe how bad London's traffic is today. In the past 10 minutes, his cab has barely moved 500 meters! He wonders
mezya [45]

Answer:

6 min

Step-by-step explanation:

5 kilometers = 5,000 meters

500/5,000 = 1/10 meaning it would take him 1/10 of an hour or 6 minutes to cover this distance.

4 0
2 years ago
37 + 15r > or equal to 127, what is the answer?
Tpy6a [65]

Answer:

r ≥ 6

Step-by-step explanation:

37+15r ≥ 127

-37           -37          37 cancels and you're left with 15r

    15r ≥ 90

   / 15     /15           15 cancels and you're left with r

      r ≥ 6

4 0
2 years ago
4x = 2 + 3x<br><br> Solve please.
Sidana [21]

Answer:

2

Step-by-step explanation:

4x=2+3x

4x-3x=2

x=2

3 0
2 years ago
In all, 1000 students took a statistics exam worth 150 points. The first quartile (or Q1) for all 1000 scores is 90 points. Abou
Brums [2.3K]

Answer:

The number of students who scored more than 90 points is 750.

Step-by-step explanation:

Quartiles are statistical measures that the divide the data into four groups.

The first quartile (Q₁) indicates that 25% of the observation are less than or equal to Q₁.

The second quartile (Q₂) indicates that 50% of the observation are less than or equal to Q₂.

The third quartile (Q₃) indicates that 75% of the observation are less than or equal to Q₃.

It is provided that the first quartile is at 90 points.

That is, P (X ≤ 90) = 0.25.

The probability that a student scores more than 90 points is:

P (X > 90) = 1 - P (X ≤ 90)

                = 1 - 0.25

                = 0.75

The number of students who scored more than 90 points is: 1000 × 0.75 = 750.

4 0
2 years ago
Read 2 more answers
The Lakewood Wildcats won 5 out of their first seven games in this year. There are 28 games in the season. About how many games
allochka39001 [22]

Answer:

The total number of matches expected to be won by Lakewood Wildcats in this season  is 20.

Step-by-step explanation:

The number of games played by Lakewood Wildcats = 7

Number of matches won by Lakewood = 5

or, the ratio of Won : Played = 5: 7

Total numbers of games in the season = 28

Let the Lakewood Wildcats win m number of games.

Here, ratio of Won Matches : Played Matches = m : 28

Now, by RATIO OF PROPORTIONALITY:

\frac{5}{7}   = \frac{m}{28}

⇒m = \frac{28 \times 5}{7}  = 20

or, m = 20

Hence, the total number of matches expected to be won by Lakewood Wildcats out of total 28 matches is 20.

5 0
3 years ago
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