The answer is ". d."
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Answer:
21, 6, 12
Step-by-step explanation:
your welcome:)
Step-by-step explanation:
cos^2(t)+sin^2(t)=1
4cos^2(t)/4 + 81sin^2(t)/81 =1
2^2(cos^2(t))/2^2 + 9^2(sin^2(t))/9^2=1
[2cos(t)]^2/2^2 +[ 9sin(t)]^2/9^2=1
since x^2/2^2 +y^2/9^2=1
X=2cos(t) ,y=9sin(t)
X(t)= 2cos(t) here r=2
y(t)=9sin(t)
Answer:
x = 12 , y = 10
Step-by-step explanation:
Let x , y are two numbers.
x > y
1 ) Three times the greater is 18 times their
difference
3x = 18( x - y )
x = 6( x - y )
x = 6x - 6y
6y = 5x
y = 5x/6 ——-( 1 )
2 ) 4 times the smaller is 4 less than twice
the sum of the two
4y + 4 = 2 ( x + y )
2y + 2 = x + y
y = x -2 ——( 2 )
From ( 1 ) and ( 2 ) ,
5x/6 = x -2
( 5x /6 ) - x = -2
( 5x - 6x ) /6 = -2
-x = -12
x = 12
Put x = 12 in equation ( 2 ) , we get
y = 12 - 2
y = 10
Therefore ,
x = 12 , y = 10
Answer:
Last one
Step-by-step explanation:
17 times 3 is 51