Answer:
- x = 375 square feet and y = 6,300 pounds.
Explanation:
The table is:
AIRPLANE LIFTING FORCE
Area of Wings Lifting Force
(square feet) (pounds)
125 1,875
150 2,250
175 2,625
250 3,750
x 5,625
420 y
The ratio of lifting force to the area is equivalent for all pairs in the table. What are the values of x and y?
<u>1. Calculate x:</u>
Ratio of lifting force to the area for the first pair (row):
Ratio of lifting force to area for the pair with x:
Set the proportion:
Equal the two ratios
Multiply both sides by 5,625 (multiplication property of equalities):
<u>2. Calculate y:</u>
You can use the same know ratio for the first pair: 125/1,875
And set the corresponding proportion, with y:
Invert both sides:
Multiply both sides by 420
The answer is x = 375 square feet and y = 6,300 pounds.
Answer:
the number of single room is 27 and the number of double room is 53
Step-by-step explanation:
Let x is the number of single room
Let y is the number of double room
We know that:
x + y = 80 <=> x = 80 -y (1)
80x +90y= 6930 (2)
Substitute (1) in (2) we have:
80 (80 - y) + 90y = 6930
<=> 6400 - 80y +90y = 6930
<=> y = 53
> x = 80 - 53 = 27
the number of single room is 27 and the number of double room is 53
Answer:
a
4,5,8,11 are the domain
Step-by-step explanation:
x is always the domain, input and It could also be a function but I don't think that only four five eight and 11 are functions so I would go with a
(-1,9) because Y is always the second number and -3*-1=3 so 9=3+6 basically :)
