I need help on 4-4a please

Mathematics

1 answer:

tigry1 [53]3 years ago

8 0

Answer:i think it is four

Step-by-step explanation:

I am 100% sure but I hope it helps'

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Find the coordinates of p so that p partitions AB in the ratio 1 to 3 with a(-5,4) and(7,-4)

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P(x)=-15+7/4=-2
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P=(-2,2)

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3 years ago

A game board with 17 spaces. Start, green, green, star, quesiton mark, question mark, star, question mark, green, cat town, gree

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Step-by-step explanation:

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3 years ago

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What equation represents y=2x^2+24x+85 in vertex form

Andrej [43]

Y=a(x-h)^2+k

vertex form is basically completing the square

what you do is
for
y=ax^2+bx+c
1. isolate x terms
y=(ax^2+bx)+c
undistribute a
y=a(x^2+(b/a)x)+c
complete the square by take 1/2 of b/a and squaring it then adding negative and postive inside
y=a(x^2+(b/a)x+(b^2)/(4a^2)-(b^2)/(4a^2))+c
complete square
too messy \
anyway

y=2x^2+24x+85
isolate
y=(2x^2+24x)+85
undistribute
y=2(x^2+12x)+85
1/2 of 12 is 6, 6^2=36
add neagtive and postivie isnde
y=2(x^2+12x+36-36)+85
complete perfect square
y=2((x+6)^2-36)+85
distribute
y=2(x+6)^2-72+85
y=2(x+6)^2+13

vertex form is
y=2(x+6)^2+13

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3 years ago

2/3 b + 5 =20 - b solve for b

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Answer:

$b = 9$