All categories

3 years ago

3x2-3x-1=x+1 plz help me

Mathematics

1 answer:

Feliz [49]3 years ago

4 0

Answer:

$\frac{2+\sqrt{10} }{3}$ , $\frac{2-\sqrt{10} }{3}$

Step-by-step explanation:

move everything to one side:

3x^2-4x-2 = 0

you can't solve by factoring so plug this into the quadratic equation.

You might be interested in

If (-1/3)x+7=4, what is the value for (1/3)x+3? A. 3 B. 6 C. 9 D. 12

Ahat [919]

Answer:

Step-by-step explanation:

there your answer

4 0

4 years ago

Help? ^-^ WILL GIVE BRAINLIEST! What is the slope of a line through (1, 3) and (-2, 2)?

ryzh [129]

Answer:

The slope of the line is $\frac{1}{3}$

Step-by-step explanation:

The Slope of a Line

Suppose we know a line passes through points A(x1,y1) and B(x2,y2). The slope can be calculated with the formula:

$\displaystyle m=\frac{y_2-y_1}{x_2-x_1}$

It's given the points (1,3) and (-2,2). Let's calculate the slope:

$\displaystyle m=\frac{2-3}{-2-1}$

Calculating:

$\displaystyle m=\frac{-1}{-3}$

$\displaystyle m=\frac{1}{3}$

The slope of the line is $\frac{1}{3}$

7 0

3 years ago

Complete the statement with the choice that best

pychu [463]

Answer:

Factors of the constant term

Step-by-step explanation:

8 0

3 years ago

What is the best approximation of the length of segment QS? (Note: cos 80° = 0.17)

matrenka [14]

Answer: $QS=11.8cm$

Step-by-step explanation:

1. You have the following information:

- The lenght of $RS$ is 2 centimeters.

- The angle m∠S=80°.

- Cos80°=0.17

2. Therefore, you can calculate the lenght of the segment $QS$ as following:

$cos80=\frac{adjacent}{hypotenuse}$

$adjacent=2cm\\hypotenuse=QS\\cos80=0.17$

3. Substitute values and solve for $QS$ :

$0.17=\frac{2cm}{QS}\\QS=\frac{2cm}{0.17} \\QS=11.76cm$

4. To the nearest tenth:

$QS=11.8cm$

6 0

4 years ago

Sheila bought 10 1⁄2 oz of almonds for $3.36. how much did the almonds cost per ounce?

Verdich [7]

Cost per ounce means you take the cost and divide it by the cost:

3.36 / (21/2) 

division of fractions changes to the multiplication of the reciprocal: 

3.36 * (2 / 21) 

3.36 and has 21 as a factor, so let's cancel it: 

0.16 * 2 

$0.32 per ounce

4 0

3 years ago