Answer:
x=5 and y=15
Step-by-step explanation:
x−2y=−25
x−2y+2y=−25+2y(Add 2y to both sides)
x=2y−25
Step: Substitute2y−25forxin3x−y=0:
3x−y=0
3(2y−25)−y=0
5y−75=0(Simplify both sides of the equation)
5y−75+75=0+75(Add 75 to both sides)
5y=75
5y
5
=
75
5
(Divide both sides by 5)
y=15
Step: Substitute 15fory in x=2y−25:
x=2y−25
x=(2)(15)−25
x=5(Simplify both sides of the equation)
Answer:
x = 4.52984
Step-by-step explanation:
Since the triangle has a right angle you need to use the the trigonometric function cos (theta which is the angle given that isn't 90°) = adjacent / hypotenuse (adjacent is the side close to the angle you're using which is 22° and the hypotenuse is the longest side of the triangle that is in the away from the right angle)
From there you plug in the numbers which now become cos (22°) = 4.2 / x
Then you isolate the x by multiplying it to both sides so it's on the left and divide both sides by cos (22°) which will end you up x = 4.2 / cos (22°)
Then you just divide and you 4.52984
Answer:
Step-by-step explanation:
It is 504
Hope it helps
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The value of the digit 5 in 75 is in the ones place, because there are seven tens, and five ones.
