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3 years ago

3x^2 + 7x + 2 solve by factoring

1 answer:

7 0

First do 3 times 2 which is 6
That we need two numbers that multiple to get 6 and add to get 7
1 and 6
So then we plug them in
(3x^2+6x)(1x+2)
Then we take out what we can
3x(x+2)1(x+2)
Then we check to make sure the parenthesis are the same
They are so we re write
ANSWER
(3x+1)(x+2)

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There are 36 inches in 1 yard. How many inches are in 24.5 yards?

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Answer:

918 inches

Step-by-step explanation:

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3 years ago

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What is the cordniate for (-6, -23)?

Hatshy [7]

Answer:

Step-by-step explanation:

A set of values that show an exact position. On graphs it is usually a pair of numbers: the first number shows the distance along, and the second number shows the distance up or down.

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3 years ago

3 + 2x -y =0 -3 -7y = 10x

sweet [91]

Answer:

(-1, 1)

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS
Equality Properties

Algebra I

Solving systems of equations using substitution/elimination
Solving systems of equations by graphing

Step-by-step explanation:

Step 1: Define systems

3 + 2x - y = 0

-3 - 7y = 10x

Step 2: Rewrite systems

3 + 2x - y = 0

Add y to both sides: 3 + 2x = y

Step 3: Redefine systems

y = 2x + 3

-3 - 7y = 10x

Step 4: Solve for x

Substitution

Substitute in y: -3 - 7(2x + 3) = 10x
Distribute -7: -3 - 14x - 21 = 10x
Combine like terms: -14x - 24 = 10x
Add 14x on both sides: -24 = 24x
Divide 24 on both sides: -1 = x
Rewrite: x = -1

Step 5: Solve for y

Define original equation: -3 - 7y = 10x
Substitute in x: -3 - 7y = 10(-1)
Multiply: -3 - 7y = -10
Add 3 to both sides: -7y = -7
Divide -7 on both sides: y = 1

Step 6: Graph

Check the solution set.

4 0

3 years ago

Factor -3/4 out of 3/2x - 9/4y

Vikki [24]

Answer:

$-\frac{3}{4} \times (-2x +3y)$

Step-by-step explanation:

To factor out -3/4 out of that equation, multiply and divide by -3/4.

Say ;

= $\frac{3}{2}x -\frac{9}{4}y$

= $(\frac{3}{2}x -\frac{9}{4}y) \times \frac{-\frac{3}{4} }{-\frac{3}{4}}$

Now, rearranging and making necessary commutations.

= $-\frac{3}{4} \times (\frac{3}{2}x -\frac{9}{4}y) \times \frac{1 }{-\frac{3}{4}}$

= $-\frac{3}{4} \times (-2x +3y)$

Factoring -3/4 we get an equation without any fractions

= -2x + 3y

3 0

3 years ago

Two points on a line L are (5,2) and (7,-4). what is the slope of L

klemol [59]

Answer:

-3

Step-by-step explanation:

The slope of a line can be calculated with the formula (y2-y1)/(x2-x1)

In this case we have:

(-4-(2))/(7-5)

(-6)/(2)

-3

Let me know if this helps!

8 0

3 years ago