2 years ago

Math problem 10 points!

1 answer:

4 0

The answer is A that’s the answer

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Kamila [148]

Answer:

1920 cm

Step-by-step explanation:

You multiply the values together. 8 times 20 times 12 is equal to 1920 cm.

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2 years ago

Dafna11 [192]

Answer:

99.7%

Step-by-step explanation:

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3 years ago

Alex17521 [72]

Answer:

the result should be 1 over a 1/a

Step-by-step explanation:

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3 years ago

Gala2k [10]

Answer:

yhjhgnxfvhjmnfdtjnnbnjyu

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3 years ago

8_murik_8 [283]

$y=2x^2+8x-9\\D=b^2-4ac\\D=64-4(2)(-9)\\D=64+72 > 0$

There are 2 roots so the only way to complete the square is,

$y=2x^2+8x-9\\y=2[(x^2+4x)]-9\\y=2[(x^2+4x+4)-4]-9\\y=2[(x+2)^2-4]-9\\y=2(x+2)^2-8-9\\y=2(x+2)^2-17$

Just factor 2 out of 2x^2+8x (just ignore the -9) then find the number that will make the terms be able to complete the square.

then complete the square and multiply 2 inside the brackets.

subtraction as you already get the vertex form and know how to complete the square.

Vertex Form: $y=2(x+2)^2-17$

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3 years ago