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2 years ago

3x^2-39+120 factor this

Mathematics

2 answers:

mylen [45]2 years ago

6 0

Answer:

$9x^{2} +81$

Step-by-step explanation:

I Guess.

Irina18 [472]2 years ago

6 0

Answer:

3(x^2 + 27)

My answer was totally off! I just re evaluated the equation and I got this:

LMK if it's wrong :)

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In simplest radical form, what are the solutions to the quadratic equation 0 = –3x2 – 4x + 5?

JulsSmile [24]

- 3 x² - 4 x + 5 = 0
$x_{1} = \frac{4+ \sqrt{16+60} }{-6} = \frac{4+8.718}{-6}$
x1 = -2.12
$x_{2} = \frac{4-8.718}{-6}$
x2= 0.786

4 0

3 years ago

Which situation below would represent a negative rate of change:

uranmaximum [27]

Answer: John's situation

Step-by-step explanation:

Hi, to answer this question we have to write an equation for each situation.

John’s situation:

The amount of money that John has (y) is equal to his school account (40) minus the product of the number of days (x) and the amount he spends per day( 3)

y =40-3x

As days pass by, John has less money (negative rate of change)

Judy's situation

The amount of money that Judy has in her savings account (y) is equal to the product of the number of days (x) and the amount he saves per day (20/2)

y = x (20/2)

3 0

3 years ago

1/4x – 2 = 3/8 Please show an equation and work. :)

Julli [10]

1/4x - 2 = 3/8

First, to start solving this, we can rearrange our fraction. Let's take 1/4x and change it to x/4. Why? Well, a variable can also be considered as the number 1.
$\frac{x}{4} - 2 = \frac{3}{8}$

Second, now we can continue solving for our variable (x). Let's add 2 to each side.
$\frac{x}{4} = \frac{3}{8} + 2$

Third, let's simplify 3/8 + 2. (3/8 + 2 = 2.375 =19/8)
$\frac{x}{4} = \frac{19}{8}$

Fourth, continue trying to get the variable by itself. Multiply each side by 4.
$x = \frac{19}{8} \times 4$

Fifth, let's simplify 19/8 × 4. This is simple. Leave the denominator be and just do 19 × 4, which equals 76.
$x = \frac{76}{8}$

Sixth, our final step is to simplify our fraction. To do so, we will need to list the factors of the numerator and denominator and find the greatest common factor (GCF).

Factors of 76: 1, 2, 4, 19, 38, 76
Factors of 8: 1, 2, 4, 8

Since 4 is our first common factor, it is considered our GCF.

Seventh, now let's divide. Divide both the numerator and denominator by the GCF (4) to create our new simplified fraction.
$76 \div 4 = 19 \\ 8 \div 4 = 2$

Answer in fraction form: $\fbox {x = 19/2}$
Answer in decimal form: $\fbox {x = 9.5}$

8 0

3 years ago

I need answers anyone help

GalinKa [24]

First one single solution second no solution 3rd one single forth one infinity and last 2 are single and infinity

7 0

3 years ago

Please help me !!

lilavasa [31]

Number 1 is x=8!!

2 is pretty confusing so I hope someone else can answer two as I have answered 1!

5 0

4 years ago

Read 2 more answers