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2 years ago

Follow the process of completing the square to solve 2x2 + 8x - 12 = 0.

Mathematics

1 answer:

ivanzaharov [21]2 years ago

8 0

Answer:

constant = -12

Step-by-step explanation:

Let the given equation be

2x² + 8x - 12 = 0 --------(1)

Here B² =(2√2)^2 = 8

Add 8 in both sides of (1)

Step1 : 2x² + 8x + 4 = 12 + 4

Step 2: x² + 4x + 4 = 16

step 3 : x² + 4x + 4 - 16 = 0

Step 4: x² + 4x - 12 = 0 ---(4)

From the (4) we get constant = -12

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Write the phrase as an expression. Then evaluate when y=20.

alisha [4.7K]

Answer:

$Q=\frac{40}{y-16}$

$Q=10$

Step-by-step explanation:

Let the quotient be represented by 'Q'.

Given:

The difference of a number 'y' and 16 is $y-16$

Quotient is the answer that we get on dividing two terms. Here, the first term is 40 and the second term is $y-16$ . So, we divide both these terms to get an expression for 'Q'.

The quotient of 40 and $y-16$ is given as:

$Q=\frac{40}{y-16}$

Now, we need to find the quotient when $y=20$ . Plug in 20 for 'y' in the above expression and evaluate the quotient 'Q'. This gives,

$Q=\frac{40}{20-16}\\Q=\frac{40}{4}=10$

Therefore, the quotient is 10, when the value of 'y' is 20.

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2 years ago

Is 43 a composite number

kobusy [5.1K]

Answer:

43 is not a composite number

Step-by-step explanation:

43 is a prime number

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2 years ago

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Yanka [14]

Answer:

-33 and -21

Step-by-step explanation:

-36, -33, -30, -27, -24, -21, -18

-36

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1 year ago

Joe bought a $40 video game for only $28, what was the percent discount on the item?

Nata [24]

Answer:

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Step-by-step explanation:

12 dollars off of 40

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1 year ago

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2 years ago

Read 2 more answers