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rewona [7]
3 years ago
11

A train traveled the first 200 miles of its trip at a speed of 50 mph and the next 130 miles at a speed of 65 mph. What was the

average speed of the train during the whole trip?
Mathematics
1 answer:
12345 [234]3 years ago
4 0
55 miles per hour, to answer questions like these you need to calculate the time (T=D/R) for each individual portion of the trip, add the time together to get total time, and then divide the total distance by the total time in order to get the average velocity in mph.
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The cheerleaders are selling tickets to a pasta dinner to raise money for new competition outfits. They plan to charge $6 per pe
kow [346]

Answer:

22 and a half ticket sold here will result in no profit situation for cheerleaders.

Step-by-step explanation:

The charge per person = $6

The total cost for dinner = $135

If cheerleaders do not make any profit , then

{ If the money earned from tickets  = The money Spent} ⇒ NO PROFIT

Now, charge per person = $6

So, number of person needed to earn a total of $135

n = \frac{\textrm{The total money needed}}{\textrm{Charge per person}}

n = \frac{135}{6} = 22.5

So, 22 and a half ticket sold here will result in no profit situation for cheerleaders.

If they sell 23 tickets, they will have a profit of $3

And if they sell 22 tickets, they will be short by $3.

5 0
3 years ago
The difference between eight times a number and three is equal to negative nineteen. What is the number? 2 -2 -3 3
castortr0y [4]
The answer is -2 because 8(-2)-3=-19
8(-2)= -16-3=-19
5 0
3 years ago
Read 2 more answers
42 67 68 70 71 78 79 80 81 84 86 86 89 99 99<br>calculate the five number summary ​
Step2247 [10]

Answer:

Min - 42

Max - 99

M = 80

Q1 = 70

Q3 = 86

Step-by-step explanation:

The five-number summary is a descriptive statistic that provides information about a set of observations. It consists of the minimum, maximum, median, first quartile, and third quartile.

5 0
2 years ago
What is the measure if each interior angle of a 15-gon
olya-2409 [2.1K]

Answer:

  • The sum of the interior angles of the 15-gon =\:2340^0
  • Each interior angle of the regular polygon =\:156^0

Step-by-step explanation:

As we know that

In any convex polygon, if we may start at one vertex and draw the diagonals to all the other vertices, we would form triangles,

The number of triangles thus formed would always  2  LESS than the number of sides.

As

  • The sum of measure of the angles of any triangle is 180°.

Thus,

The sum of the interior angles of the 15-gon will be:

13\:\times\:180\:=\:2340^0

Also

15-gon is regular, it means this total 2340^0 is shared in equal proportion among the 15 interior angles.

And

Each interior angle of the regular polygon will be:  \frac{2340^{0} }{15}=156^{0}

Therefore, we conclude that:

  • The sum of the interior angles of the 15-gon =\:2340^0
  • Each interior angle of the regular polygon =\:156^0

Keywords: regular polygon, 15-gon, triangle

Learn more about polygon from brainly.com/question/11932357

#learnwithBrainly

3 0
3 years ago
6.7<br> x 2.5<br> 2 x 6 =<br> 2 x 0.7 =<br> 1<br> 11<br> 0.5 x 6 =<br> 0.5 x 0.7 =
Mademuasel [1]

Answer:

6.7

x 2.5

2 x 6 =53

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
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