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dybincka [34]
3 years ago
14

I need help on number 5 please and thanks

Mathematics
1 answer:
aleksandrvk [35]3 years ago
3 0

in order to get the percentage you would just need to divide 6,840 by 38,000 (6840/38000 = .18)

this gives you .18

.18 is equivalent to 18%

John paid 18% of his earnings on entertainment.

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The vertex of this parabola is at (3,5) when the y-value is 6 the x value -1 what is the coefficient of the squared term in the
ale4655 [162]

Answer:

1/16

Step-by-step explanation:

Here,

Vertex =(3,5)

x= -1, y=6

Simply,eqn of parabola is given by ax^2+bx+c=y

So, coefficient of squared term (x^2) is 'a'

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Moving on to solution:

a-b+c=6 ___(i) (by putting the given values of x and y in eqn of parabola )

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Vetex=(-b/2a, ( 4ac-b^2)/4a)

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3= -b/2a

b=-6a___(ii)

Again,

5=(4ac-b^2)/4a

5=(4ac/4a) - (b^2/4a)

5= c- (36a^2/4a) (by putting value of b from eqn ii )

5= c-9a___(iii)

Now,moving back to the first eqn

a+6a+5+9a=6

16a=1

therefore,a=1/16

Hence ,the required value of coefficient of squared term is 1/16.

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