Answer:
12/52= 6/26= 3/13 of the people are men
4+(−7) is 7 units from 4, in the negative direction (that is, to the left of 4)
The value of the term in the series will be equal to 3 + 12 +48 + 192 after calculation.
<h3>What is summation?</h3>
In mathematics, the summation is the addition of a sequence of any kind of numbers, called addends or summands.
Now we have a given term
By solving the above term;
Hence the value of the term in the series will be equal to 3 + 12 +48 + 192 after calculation.
To know more about Summation follow
brainly.com/question/2767605
Answer: rate of train A = 120 km/h
rate of train B = 101 km/h
Step-by-step explanation:
Let x = the speed of train A
Let y = the speed of train B
One train travels 19 km/h slower than the other. Let train B be the slower train. Therefore,
x = y + 19 - - - - - - - - - -1
Recall
Speed = distance/time
Distance = speed × time
If they meet in 3 hours, it means that train A has travelled a distance of
x × 3 = 3x km
And train B has travelled a distance of y × 3 = 3y km
Train A and Train B were 663 kilometers apart when they left their respective destinations. They left at the same time and travelled towards each other. This means that if they meet in 3hours time, they must have covered a total of 663 km. Therefore,
3x + 3y = 663 - - - - - - - - - 2
Substituting x = y + 19 into equation 2, it becomes
3(y + 19) + 3y = 663
3y + 57 + 3y = 663
6y + 57 = 663
6y = 663 - 57 = 606
y = 606/6 = 101 km/h
x = y + 19 = 101 + 19
x = 120 km/h
<h2><u><em>54 tens m8</em></u></h2><h2>54 tens m8 </h2><h2>54 tens m8</h2>
