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3 years ago

5x + 7y + 12 how many terms are there

Mathematics

1 answer:

scoray [572]3 years ago

7 0

Answer:3

Step-by-step explanation:

5,7,12

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Determine the next step for solving the quadratic equation by completing the square

GaryK [48]

Answer:

The two solutions are: $x=\frac{1}{2}+/-\frac{\sqrt{7} }{2}$

The next and every step are below.

Explanation:

1. $-3=-2x^2+2x$ : Given (addition property / add - 3 to both sides)

2. $-3 = - 2(x^2-x)$ : Given (commom factor - 2)

3. $-3-1/2=-2(x^2-x+1/4)$

To obtain the perfect square it was added the square of half of the coefficient of x: (1/2)² = 1/4, inside the parenthesis.

Since, the terms inside the parentthesis are multiplied by - 2, you have to add - 2 (1/4) = - 1/2 to the left side of the equation.

4. Now, you have that the trinomial x² - x + 1/4 is a square perfect trinomial which is factored as (x - 1/2)² and get the expression:

$-7/2=-2(x-1/2)^2$

5. Divide both sides by - 2 to get the next expression:

$-7/4=(x-1/2)^2$

6. The last step is to extract squere root from both sides of the equality:

$(x-1/2)=+/-\sqrt{\frac{7}{4}}\\ \\ x-1/2=+/-\frac{\sqrt{7} }{2}\\ \\ x=\frac{1}{2}+/-\frac{\sqrt{7} }{2}$

8 0

3 years ago

Frank has 8 soup bowls. He wants to pour 1/3 pint of soup in each bowl. Will Frank need more or less than 8 pints? How much soup

Margarita [4]

He would need less than 8. So he would need 2.5 pints. I think.

5 0

3 years ago

in 2007, your company's sales revenues were $400,000. A vigorous advertising campaign increased sales by 20% in 2008, and then b

azamat

first we multiply 400,000 by 1.20 which equals 480,000 which is the sales revenue for 2008 now we multiply 480,000 by 1.30 which equals 624,000

so your sales revenue for 2009 is $640,000

please mark brainliest.

3 0

3 years ago

The points (10,8) and (4,5) fall on a particular line. What is its equation in point-slope form?

USPshnik [31]

Answer:y=1/2x+3

No Parenthesis or anything.

4 0

2 years ago

Find the x-intercept form the line represented by this equation. 5x+7y=3

krek1111 [17]

Answer:

A. (3/5, 0).

Step-by-step explanation:

The x intercept occurs where y = 0, so we have:

5x + 7(0) = 3

5x = 3

x = 3/5 so the required point is (3/5, 0).

6 0

3 years ago