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Sidana [21]
3 years ago
10

A-Plus Auto Body is painting disigns on a customer's car. They had 18 pints of blue paint on hand. They used 1/2 of it for the f

lames, and 1/3 of it for sparks. They need 7 3/4 pints of blue paint to paint the next design. How many more pints of blue paint will they need to buy
Mathematics
1 answer:
vlabodo [156]3 years ago
4 0
18 - (1/2×18 + 1/3×18)
18 - (9 + 6)
18 - 15 = 3 pints left

7 3/4 - 3 = 4 3/4
the answer is 4 3/4 pints (or 5 pints if they can only buy whole ones)

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Please solve this sheet.
lyudmila [28]
Hello,

A: roots: -1,-3
a point (-2,1)
Vertex=((-2,1)

y=k*(x+1)(x+3) using roots
but k*(-2+1)(-2+3)=1==>k*(-1)*1=1==>k=-1

eq: y=-(x+1)(x+3)
==>y=-(x²+3x+x+3)
==>y=-x²-4x-3
y=k(x+2)²+1 if x=-1,y=0 ==>k*1+1=0==>k=-1
==>y=-(x+2)²+1

Answer :A--> R,K

B)
y=k(x+4)²-2 and k=-1/2
y=-1/2(x+4)²-2
y=-1/2x²-4x-10

answer B--> I,≈W if it is written -1/2*x²  (square has been forgotten)

C:
y=2x²-16x+30
y=2(x-4)²-2
answer : C-->S,J

D:
y=-(x+3)(x+1)
y=-x²-4x-3
=-(x+2)²+1
answer D--> V,L

E:
Here there is a problem: or the graph is wrong, or 2 equations are missing!

y=1(x+1)(x-3) using roots
y=x²-2x-3 ≈ T si it were -2x and not +2x.

y=(x-1)²-4 ≈H is it were -1 in place of +1 [H:y=(x+1)²-4]




6 0
3 years ago
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