3 years ago

Please help me in 1 and 2 I will try to make you a brainliest

Mathematics

1 answer:

hichkok12 [17]3 years ago

5 0

The first one is b I don't really understand the second one

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3 years ago

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3 years ago

F(x)=2x^(2)-5x-20 find f(-9)

Fed [463]

Answer:

Step-by-step explanation:

$f(x) = 2 {x}^{2} - 5x - 20$

To find f(-9) , substitute the value of x that's - 9 into f (x). That is for every x in f(x) replace it with - 9

We have

$f( - 9) = 2 ({ - 9})^{2} - 5( - 9) - 20 \\ = 2(81) + 45 - 20 \\ = 162 + 25 \: \: \: \: \: \: \: \: \: \: \: \: \: \: \\ = 187 \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \:$

We have the final answer as

Hope this helps you

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3 years ago

Read 2 more answers

what is the perimeter of the rectangle with vercities at [4 1/2, 5], [4 1/2,1], [-5 1/2, -1, -5 1/2. 5

umka21 [38]

2.5-2.1=0.4
41+51=92
0.4x2+92x2=184.8 units

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3 years ago

Justin bought 40 packs of baseball cards for a discounted price of 64.If he sells 10 packs of baseball cards to a friend at cost

andreyandreev [35.5K]

64/40 = $1.60

$1.60 * 10 = $16

He should charge $1.60 a pack, another way to say this is $16 for the 10 packs total

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3 years ago