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2 years ago

12

Help! I need the answers quick please

1 answer:

Norma-Jean [14]2 years ago

8 0

Answer:

No idea

Step-by-step explanation:

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4- What are the different waysto solve a quadratic? List examples of each

TiliK225 [7]

I know of two ways to solve quadratic equations. The first is through factoring. Let us take the example (x^2)+2x+1=0. We can factor this equation out and the factors would be (x+1)(x+1)=0. To solve for the roots, we equate each factor to 0, that is

x+1=0; x+1=0

In this case, the factors are the same so the root of the equation is

x=1.

The other way is to use the quadratic formula. The quadratic formula is given as [-b(+-)sqrt(b^2-4ac)]/2a where, using our sample equation above, a=1, b=2 and c=1. Substitute these to the formula, and you will get the same answer as the method above.

8 0

2 years ago

Three friends share the cost of renting a game system. Each person rents one game for 8.50. If each person pays 13.25, what is t

laiz [17]

13.25x3-(8.50x3)=x x is the cost of the system

7 0

3 years ago

Find the product of the binomials.<br> (a +1) and (a -1)

yan [13]

Answer:

a^2-1

Step-by-step explanation:

(a+1)(a-1)

=a^2-1

6 0

2 years ago

Your school wants to take out an ad in the paper congratulating the basketball team on a successful season, as shown to the rig

iogann1982 [59]

Answer:

$x_1 =-14.43 in, x_2 = 2.426in$

Since the measurement can't be negative the correct answer for this case would be $x =2.426 in$

Step-by-step explanation:

Let's assume that the figure attached illustrate the situation.

For this case the we know that the original area given by:

$A_i = 7 in *5 in = 35in^2$

And we know that the initial area is a half of the entire area in red $A_i = \frac{A_f}{2}$ , so then:

$A_f = 2 A_ i =2*35 = 70$

And we know that the area for a rectangular pieces is the length multiplied by the width so we have this:

$70 = (x+7) (x+5)$

We multiply both terms using algebra and the distributive property and we got:

$70 =x^2 +12 x +5$

And we can rewrite the expression like this:

$x^2 +12 x -35 = 0$

And we can solve this using the quadratic formula given by:

$x = \frac{-b \pm \sqrt{b^2 -4ac}}{2a}$

Where $a = 1, b =12 and c=-35$ if we replace we got:

$x = \frac{-12 \pm \sqrt{(12)^2 -4(1)(-35)}}{2*1}$

And the two possible solutions are then:

$x_1 =-14.43 in, x_2 = 2.426in$

Since the measurement can't be negative the correct answer for this case would be $x =2.426 in$

3 0

3 years ago

Ordering real numbers least to greatest

Darina [25.2K]

Hello,

The correct order is:

-16.5, -√270, -50/30, 16 3/10

Faith xoxo

8 0

3 years ago

Read 2 more answers