Answer:
it's already simplified :) your welcome
B) 66.5 square inches
C) 114 square inches
D) 180.5 square inches
1.48 will gave you your answer
Answer:
Step-by-step explanation:
x = pens and y = pencils
4x + 5y = 6.71....multiply by 5
5x + 3y = 7.12....multiply by -4
--------------------
20x + 25y = 33.55 (result of multiplying by 5)
-20x - 12y = - 28.48 (result of multiplying by -4)
--------------------add
13y = 5.07
y = 5.07 / 13
y = 0.39 <=== cost of a pencil
4x + 5y = 6.71
4x + 5(0.39) = 6.71
4x + 1.95 = 6.71
4x = 6.71 - 1.95
4x = 4.76
x = 4.76/4
x = 1.19 <==== cost of a pen
The speed of the walker and the biker will be 16.67 miles per hour and 25 miles per hour.
Speed is the distance that a particle or body travels in one hour. It has a scalar value. It is the time-to-distance ratio.
We know that the speed formula
Speed = Distance/Time
A biker’s speed is 1.5 times faster than a walker’s speed.
Let y be the speed of the biker and x be the speed of the walker. Then the equation is given as,
y = 1.5x
They begin going simultaneously from the same location in the same direction, and after 1.5 hours, there are 12.5 miles separating them.
y - x = 12.5 / 1.5
1.5x - x = 25/3
0.5x = 25/3
x = 16.67 miles per hour
Then the speed of the biker will be given as,
y = 1.5 (16.67)
y = 25 miles per hour
The speed of the walker and the biker will be 16.67 miles per hour and 25 miles per hour.
More about the speed link is given below.
#SPJ2
Answer: Speed of walker and biker will be 16.67 miles per hour and 25 miles per hour respectively.
Step-by-Step explanation:
Leave the speed of a walker alone x
Let the speed of a biker be 1.5x
They are moving a similar way,
thus, their Relative speed will be
1.5x - x =0.5x
Time taken = 1.5 hours
Separation between them = 12.5 miles
As we probably am aware the equation for "Distance":
*Picture attached*
Consequently, the Speed of the walker be 16.67 miles every hour
Speed of biker be
1.5 times 16.67=25 miles per houe