Answer:
(6x² - 5)(x² + 2)
Step-by-step explanation:
Given
6 - 5x² + 12x² - 10 ( factor the first/second and third/fourth terms )
= x²(6x² - 5) + 2(6x² - 5) ← factor out (6x² - 5) from each term
= (6x² - 5)(x² + 2)
Y is in direct proportion to x. x = 25, y = 5. Find the value of y, if x = 9.
2 answers:
Answer:
y = 1.8
Step-by-step explanation:
given y is in direct proportion to x then the equation relating them is
y = kx ← k is the constant of proportion
to find k use the condition x = 25, y = 5 , then
5 = 25k ( divide both sides by 25 )
=
= 0.2 = k
y = 0.2x ← equation of proportion
when x = 9 , then
y = 0.2 × 9 = 1.8
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