Answer:
the scale is 630:1 = 0.16%
80inch^2 of 50400inch^2 however = 0.16%
Step-by-step explanation:
350ft^2 = 50400inches 8 x 10 = 80inches = 50400/80 = 630
50400/9 =5600 we distribute
5600/80 = 7
showing us that 7 x 9 = 63 where 63 x 80 = 5040 1/100th
1 = 630
7x9x 80 = 1/100 of 50400
0.01589 x 7x9x80x 7x9x80 = 80
Proves that every every 10000 the percentage goes down 0.00011%
Answer:
y = 2(x-3)
Step-by-step explanation:
This is because Gavin representing "x" loses 3 marbles, which is shown by the -3 in the parenthesis, is half of what Cindy has, or as the problem says "Cindy has double the marbles that Gavin has." These two together result in y=2(x-3)
The total cost of the TV is: $181.57
Work: 195.72 x 0.20 (20%) = 39.14
195.72 - 39.14 = 166.58 <-- Was for the discount now you have to do the tax.
Now Tax, 166.58 + 14.99 = 181.57
Hope this helps!
Answer:
rate boat = 15 mph
rate current = 5 mph
explanation:
d = r * t
t = d/r
240 / (r_boat + current) = 12 Multiply both sides by r_boat + r_current.
240 = 12(r_boat + current)
240/ (r_boat - current) = 24 Multiply both sides by r_boat - r_current
240 = 24*(r_boat - current)
Since the distances are the same in both equations, you can equate the right side of each.
12 (r_boat + current) = 24(r_boat - current) Divide by 12
r_boat + current = 2 (r_boat - current) Remove the brackets.
r_boat + current = 2*r_boat - 2* current add 2 currents to both sides
r_boat + 3currents = 2*r_boat Subtract r_boat both sides
3 currents = r_boat.
240 = 12*(r_boat + current. Divide by 12
20 = r_boat + current Put 3 currents in for r_boat
20 = 3currents + 1 current Combine
20 = 4 currents Divide by 4
5 = current
The rate of the current = 5 miles / hour
3 currents = r_boat
3*5 = rate_boat
15 = rate of the boat
