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Lapatulllka [165]
2 years ago
10

Tamara is considering two different groups for her relay-race team. Listed below are the different practice times, in minutes, r

ecorded for each group.
which group is most likely to have the best time in the race​

Mathematics
1 answer:
neonofarm [45]2 years ago
4 0

Add the times for each group together and divide by the quantity to find the averages and compare:


Average for green group is: 4.317

Average for blue group is 4.298


The blue group has a lower (faster) average .


Answer: the blue group

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A,B,C, and D are all answer choices
ruslelena [56]

Answer:

Empirical formula

0.34

0.33

0.33

A^c = event B or event C

Step-by-step explanation:

A = roommate A wins the game

P(A) = (Rock A and Scissors B) + (Scissors A and paper B) + (paper A and rock B)

P(A) = (0.36*0.53) + (0.32*0.25) + (0.32*0.22) = 0.3412

C = game ends in a tie :

P(C) = (RockA and rockB) + (ScissorsA and ScissorsB) + (ScissorsA and ScissorsB)

P(C) = (0.36*0.22) + (0.32*0.53) + (0.32*0.25) = 0.3288

P(B) = 1 - P(A) - P(C)

P(B) = 1 - 0.3412 - 0.3288

P(B) = 0.33

Complement of event A =event B or event C

4 0
3 years ago
The graph below describes the journey of a train between two cities
UkoKoshka [18]

Answer:

Step-by-step explanation:

To find : Acceleration in first 15 min . Distance between two cities  Average speed of journey

Solution:

Each horizontal block is 1/8 hr = 7.5 min

Each vertical block is 10 km/hr

Time                    Velocity  km/hr

0 Min  ( 0 hr)            0

15 Min (1/4 hr)           50

45 Min (3/4 hr)         50

60 MIn  ( 1 hr)            100

90 Min  ( 3/2 hr)        100

120 Min ( 2hr)            0

Acceleration in first 15 min  (1/4 hr)  =  (50 - 0)/(1/4 - 0)  = 50/(1/4)

= 200  km/h²

Distance between two cities

= (1/2)(0 + 50)(1/4 - 0)  + 50 * (3/4 - 1/4)  + (1/2)(50 + 100)(1 - 3/4)  + 100 * (3/2 - 1) + (1/2)(100 + 0)(2 - 3/2)

=  25/4  + 25 + 75/4   + 50 + 25

= 125

Distance between two cities = 125 km

Average Speed of journey = 125/2  = 62.5  km/hr

Acceleration in first 15 min = 200  km/h²

Distance between two cities = 125 km

Average Speed of journey =  62.5  km/hr

Hope this helps..

3 0
3 years ago
Read 2 more answers
Help what's the answer to this??
True [87]

Answer:

AD

Step-by-step explanation:

8 0
3 years ago
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At the beginning of the month, there were 80 ounces of peanut butter in the pantry. Since then, our family has eaten 30% of the
ZanzabumX [31]

Answer:

A. 0.7 x 80

Step-by-step explanation:

At the beginning of the month, there is 100% remaining of the peanut butter. 100% = 80 oz. After eating 30%, that's 100%-30%=70%. 70%=0.7

5 0
2 years ago
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What is the square root of 3567
Lunna [17]

Answer:

59.72

Step-by-step explanation:

3 0
3 years ago
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