Answer:
The firstgear needs to make five revolutions in order for the marks to line up again.
Step-by-step explanation:
A number (we don’t know the number so I’ll use X) plus five. So we can start the equation of with X+5 then divided by 3=7 so X+5➗3=7 so to solve what X is we can just go in reverse. 7 TIMES 3= 21-5=16 so X=16
D = vt
Distance traveled by train
d = 55t
Distance traveled by plane
d = 285t
Total distance
d = 1020
So, you do:
distance traveled by plane + distance traveled by train = total distance
(55t) + (285t) = 1020
Solve for t
t = 3 hours
t is the time traveled by each so 3 hrs traveled by train and 3 hrs traveled by plane
Total time = 3 + 3 = 6 hours
Answer:
16x+40y=15
Step-by-step explanation:
Answer:
Step-by-step explanation:
L = 3x
w = 2x
Area = 294 ft^2
Formula
Area = L * w
Solution
Area = L * w Substitute into formula
294 - 3x * 2x Combine the right and switch
6x^2 = 294 Divide by 6
x^2 = 294/6
x^2 = 49 Take the square root of both sides
√x^2 = √49
x = 7
w = 2*7 = 2x = 14
L = 3*7 = 3x =21
