Answer:
(-4,5)
Step-by-step explanation:
-X and X cancel each other out so your're left with
Y=9
2Y=6
Add the like terms together to get 3Y=15
so Y=5.
Then plug in y into one of the equations to get x.
-x+5=9
-x=4
X=-4
So the solution is (-4,5)
Answer:
40 kg
Step-by-step explanation:
y · 83.75 = 5 · 670
83.75y = 3350
83.75y ÷ 83.75 = 3350 ÷ 83.75
y = 40
Answer: x = ± 2 √3 ; or, write as: x = ± 3.464 .
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Given: 12 – x² = 0 ;
Multiply BOTH side by "-1" ;
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-1 (12 – x² = 0) ;
to get:
-12 + x² = 0 ;
Rewrite as:
x² - 12 = 0 ;
Add "12" to both sides; to get:
x² = 12
Take the square root of each side:
√(x²) = ±√(12)
x = ± √(12)
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√(12) = √(4) * √(3) = 2 √(3)
√(12) = 3.4641016151377546 ; round to: 3.464 .
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x = ± √(12) ;
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x = ± 2 √3 ; or, write as: x = ± 3.464 .
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Answer:
angle Y= 60 degrees
Step-by-step explanation:
angle S + angle Y = 90 degrees because they are complementary
Y = 90 - S
angle S = 4(Y)-210
substitute for Y
S = 4(90 - S) - 210
S = 360 - 4S - 210
reduce
5S = 150
S = 30
Y = 90 - 30 = 60
False, it would be a straight line. it has to be more than that.