PLEASE HELP!!!! FIND X AND Y AND GIVE A STEP BY STEP EXPLANATION FOR BRAINLIEST!!! 50 POINTS!!!
1 answer:
Answer x=20, y=60
Reason
First I find x using the bottom angles that equal 180
3x + 3x + (vertical angle ) 3x
9x=180
X=20
Now I find y using the top angles that equal 180
(Vertical angle) 3x + 3x + y = 180
Substitute value of x in equation
3(20) + 3(20) + y = 180
60+60 + y =180
Combine like terms to isolate y
y =180-60-60
y=60
You can check your work by substituting your x and y values into the angles
Reason
First I find x using the bottom angles that equal 180
3x + 3x + (vertical angle ) 3x
9x=180
X=20
Now I find y using the top angles that equal 180
(Vertical angle) 3x + 3x + y = 180
Substitute value of x in equation
3(20) + 3(20) + y = 180
60+60 + y =180
Combine like terms to isolate y
y =180-60-60
y=60
You can check your work by substituting your x and y values into the angles
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Answer:
% change in stopping distance = 7.34 %
Step-by-step explanation:
The stooping distance is given by
We will approximate this distance using the relation
dx = 26 - 25 = 1
T' = 2.5 + x
Therefore
This is the stopping distance at x = 25
Put x = 25 in above equation
2.5 × (25) + 0.5× + 2.5 + 25 = 402.5 ft
Stopping distance at x = 25
T(25) = 2.5 × (25) + 0.5 ×
T(25) = 375 ft
Therefore approximate change in stopping distance = 402.5 - 375 = 27.5 ft
% change in stopping distance = × 100
% change in stopping distance = 7.34 %