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KIM [24]
1 year ago
6

Inga is solving 2x2 + 12x – 3 = 0. Which steps could she use to solve the quadratic equation? Select three options. 2(x2 + 6x +

9) = 3 + 18 2(x2 + 6x) = –3 2(x2 + 6x) = 3 x + 3 = Plus or minus StartRoot StartFraction 21 Over 2 EndFraction EndRoot 2(x2 + 6x + 9) = –3 + 9
Mathematics
1 answer:
Ede4ka [16]1 year ago
5 0

The required steps are

<em>2x^2 + 12x – 3 = 0. </em>

<em>2x2 + 12x  = 3</em>

<em>2(x^2+6x) = 3</em>

<em>2[(x+3)^2 - 9] = 3</em>

<h3>Completing the square method</h3>

Quadratic equations are equations that has a leading degree of 2

Given the equation below;

2x^2 + 12x – 3 = 0.

Add 3 to both sides

2x2 + 12x  = 3

Factor out 2

2(x^2+6x) = 3

Complete the square

2(x^2+6x+3^2-3^2) = 3

2[(x+3)^2 - 9] = 3

This gives the required steps to solve the equation

Learn more on completing the square here: brainly.com/question/13981588

#SPJ1

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prohojiy [21]
Ahh yes, negative exponents always give us a scare once and a while. All the negative means is to flip the position of its base. For instance, if x has a negative exponent and x in the denominator, all you would have to do is move x to the numerator with the same power (except it's no longer negative). Before we substitute x and all the other variables which the values given, let's eliminate the negatives first.

After flipping positions/eliminating the negative exponents it should look like this:

\frac{ 2^{2} x^{3} }{ y^{5} }
which simplifies to 
\frac{ 4 x^{3} }{ y^{5} }
now that everything is simplified, and all negative exponents are eliminated we can substitute x with 2, and y with (-4).
\frac{4 (2)^{3} }{ (-4)^{5} }
which simplifies to 
\frac{4(8)}{(-1024)} = \frac{32}{-1024} = - \frac{1}{32}

Final Answer: - \frac{1}{32} [/tex]
4 0
3 years ago
Find each value.Use a calculator is needed P(9,2) .P(5,5). P(7,7)
Andrews [41]
The answers are:
P(9, 2) = 72
P(5, 5) = 120
P(7, 7) = 5040

These are examples of permutations. The problems are asking us to find the total number of ways an event can happen.

In the first case, P(9, 2), we are asked to find the ways that 2 things can be chosen out of a group of 9.
9 x 8 = 72

P(5, 5) = 5 x 4 x 3 x 2 x 1 
P(7, 7) =  7 x 6 x 5 x 4 x 3 x 2 x 1
3 0
3 years ago
Which excel cell entry will calculate the square root of 165? =sqrt[165] sqrt(165) sqr(165) =sqrt(165)?
svetoff [14.1K]
Excel expects a + or = sign before math calculations.
Also, for arguments of functions (such as sqrt), parentheses "()" are used.  Brackets "[]" are not acceptable.
That leaves only one remaining option.
4 0
3 years ago
Tanner and Zach both play basketball. In a game, Tanner scored six points. Zach scored four times as many times as Tanner. How m
MAVERICK [17]

Answer:

24

Step-by-step explanation:

Tanner has <u>6 points</u> so T = 6

Zach has <u>four times as many</u> so Z = 4T

4 * T

= 4 * 6

which is 24.

8 0
3 years ago
A. -10+(+10)<br> b.-13+(-13)<br> c. -11 + 0
DochEvi [55]
A is 0
B is-26
C is -11
5 0
3 years ago
Read 2 more answers
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