The linear equation of relating two objects can be written in the form,
y = ax + b
Our x is the number of passenger and y is the weight (in tons). Using the first two conditions,
10 = 60(a) + b
13 = 84(a) + b
The values of a and b from the equations are 0.125 and 2.5.
For 50-passenger bus,
y = (50)(0.125) + 2.5
The value of y is 8.75.
To subtract a number from another number, they must be the same type. 4 1/4 is a mixed number; 3/4 is a fraction. thus, 4 1/4 must be converted into fractional form go subract a fraction (3/4) from it.
Answer:
5
Step-by-step explanation:
The exchange rate is 10 CAD = 7 USD
Which means:
10/7 CAD for EACH USD
So, d USD would be:
d * 10/7 = (10d)/7 CAD
This is what she has now, after exchange (in CAD).
She spends 60 and has "d" left, so finding d:
Hence, d = 140
The digits of d are 1, 4, and 0
The sum is:
1 + 4 + 0 = 5
The sum is 5
2 5/8 or 21/8. Use the Keep Change Flip method. Change the sign to multiplication and flip the second fraction.
Multiply the numerators and the denominators separatley.
This cannot be simplified further, but it can be converted to a mixed number (as opposed to an improper fraction).
Factor the numerator and denominator of the first fraction...
(n^2-6n-4n+24)/(n^2-6n-7n+42)
(n(n-6)-4(n-6))/(n(n-6)-7(n-6))
((n-4)(n-6))/((n-7)(n-6)), note that the (n-6)s cancel out leaving:
(n-4)/(n-7) so now the equation looks like:
(n-4)/(n-7)-9/(n-7) since they now have a common denominator...
(n-4-9)/(n-7) which is
(n-13)/(n-7)