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3 years ago

6

Which method is the most efficient method to use to solve 2x^2 4x-3=0?

1 answer:

Darya [45]3 years ago

4 0

You should use the formula - b+-√b^2- 4 ac/2a. A=2 B=4 C=-3. Plug these numbers into the formula. If you get a negative in the square root try using a method called the box method.

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Multiply (x^3 + 3x^2 + 3)(3x^3 − 6x^2 − 8x + 1)

ElenaW [278]

When multiplying two equations like this, you need to distribute. Distribute each term to get <span><span><span><span><span><span>3<span>x</span></span></span></span></span></span></span> $x^{6}$ <span><span><span><span><span>+ <span>3</span></span></span></span></span></span> $x^{5}$ <span><span><span><span>− <span>26</span></span></span></span></span> $x^{4}$ <span><span><span>−<span>14</span></span></span></span> $x^{3}$ <span><span>−<span>15</span></span></span> $x^{2}$ <span>−<span>24x</span></span>+<span>3</span>

4 0

3 years ago

Read 2 more answers

The equations below represent the numbers y of tickets sold after x weeks for two different local music festivals.

kiruha [24]

Answer:

Part a) 3.5 weeks

Part b) 185 tickets

Step-by-step explanation:

Part a) After how much time have the same number of tickets been sold for both festivals?

Let

x -----> the number of weeks

y ----> the number of tickets sold

we have

<em>Country Music Festival</em>

$y=10x+150$ ----> equation A

<em>Pop Music Festival</em>

$y=20x+115$ ----> equation B

Equate equation A and equation B

$20x+115=10x+150$

solve for x

$20x-10x=150-115$

$10x=35$

$x=3.5\ weeks$

Part b) What is the number of tickets sold at that time?

substitute the value of x=3.5 weeks in the linear equation A or linear equation B

$y=10(3.5)+150$

$y=35+150$

$y=185\ tickets$

6 0

3 years ago

Solve the system of equations by graphing. y=-3/2x and y =-1/2x-2

nadezda [96]

The answer is here!!!!!!

7 0

3 years ago

Jane corporation produces model toy cars each sells for $29 99 sense its variable cost per unit is $14 25 sense what is the brea

n200080 [17]

Answer:

Break-even point in units= 20,000

Step-by-step explanation:

Giving the following information:

Selling price per unit= $29.99

Unitary variable cost= $14.25

Fixed costs= $314,800

<u>To calculate the break-even point in units, we need to use the following formula:</u>

Break-even point in units= fixed costs/ contribution margin per unit

Break-even point in units= 314,800 / (29.99 - 14.25)

Break-even point in units= 20,000

5 0

3 years ago

A factory uses 1/6 of a barrel of raisins in each batch of granola bars. Yesterday, the factory used 1/2 of a barrel of raisins.

balu736 [363]

1/6 = 1 batch, 2/6 = 2 batches and so on

if the factory used 1/2, the factory used 3/6 of a barrel, which equals to 3 batches.

<em>hope it helps :)</em>

8 0

3 years ago