Answer:
523.6 km
Step-by-step explanation:
Let x represent the distance traveled by train. Then 1020-x is the distance traveled by bus. The travel times are given by the relation ...
time = distance/speed
Then the total travel time in hours is ...
x/160 +(1020-x)/105 = 8
21x +32640 -32x = 26880 . . . . . multiply by 3360
5760 = 11x . . . . . . . . . add 11x -26880
523.6 ≈ x . . . . . . . . . . divide by 11
Aidan traveled about 523.6 km by train.
Answer:
Step-by-step explanation:
The value of y is given in equation 2
Putting value of y = 3x in equation 1
Y = - x + 4
3x = - x + 4
Bringing like terms on one side
3x + x = 4
4x = 4
x = 4/4 = 1
Now putting value of x = 1 in equation 2
Y = 3x
Y = 3(1) = 3
You have to basically try to find out what x is. You Subtract 7.72 by 7.72 and by 19. So, you'll be left over with 7.72x/7.72= 7.72/11.28. And so x= 11.28
Answer:
See below
Step-by-step explanation:
<u>Mercury-2.3 cm </u> The hundreths value isn't greater than 5, so the tenths stays the same.
<u>Venus - 4.3 cm</u> The hundreths value isn't greater than 5, so the tenths stays the same.
<u>Earth-6 cm</u> There is no hundreths value so the tenths stays the same.
<u>Mars-9.1 cm</u> The hundreths value isn't greater than 5, so the tenths stays the same.
<u>Jupiter- 31.1 cm</u> The hundreths value isn't greater than 5, so the tenths stays the same.
<u>Saturn- 57.4 cm</u> The hundreths value <u><em>is</em></u> greater than 5, so the tenths values is raised by 1.
<u>Uranus-114.9 cm </u> The hundreths value isn't greater than 5, so the tenths stays the same.
Neptune-179.8 cm There is no hundreths value so the tenths stays the same.
