The maximum number of marks attainable at a mathematics competition is 60. Kate obtains 40 marks, Priya obtains 46 marks, and No
1 answer:
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Solution: The total cost of the gift including the tax = $55.80
The amount paid by Montel = $14
The amount paid by Raymond is
Therefore, Raymond paid $18.6
The amount paid by Emily is
25% of 55.80
Therefore, Emily paid $13.95
We also know that the remaining amount is paid by Leanne.
Therefore, the remaining amount is:
Total amount - Amount paid by Montel, Raymond and Emily
The amount paid by Leanne is $9.25
We clearly see, Raymond has paid $18.6, which is the greatest part of the cost $55.80
Answer:
a) x =3 and x=5
c) x =-1 and
i) x =0 and
Step-by-step explanation:
a)
Given that the quadratic equation
x² - 8x +15 =0
The factors of 15 = 5 × 3
x² - 5x -3x +15 =0
x(x -5) -3(x-5) =0
(x-3)(x-5) =0
x =3 and x=5
c)
3 x² + 10 x +7 =0
⇒ 3x² + 3x + 7x +7 =0
⇒ 3x (x +1) +7(x+1) =0
⇒ (x+1) ( 3 x +7) =0
⇒ x =-1 and
i)
2 x ² + 9 x =0
⇒ x( 2 x + 9) =0
⇒ x =0 and 2 x = -9
⇒ x =0 and