2 years ago

Solve by completing the square

Mathematics

1 answer:

Alexxandr [17]2 years ago

5 0

Answer:

X¹=-11; X²=3

x ^ 2 + 8x - 33 = o

x ^ 2 + 11x - 3x - 33 = 0

x(x + 11) - 3(x + 11) = 0

(x + 11)(x - 3) = 0

You might be interested in

Solve 2x-1=9 (also show your work plz) first response will get brainliest

Kaylis [27]

Answer:

x= 4

2x-1=9

simplify 9-1 to 8

Divide both sides by 2

x=8/2

Simplify 8/2 to 4

x=4

6 0

3 years ago

<img src="https://tex.z-dn.net/?f=2x%2B4%2836-x%29" id="TexFormula1" title="2x+4(36-x)" alt="2x+4(36-x)" align="absmiddle" class

atroni [7]

Answer:

$= 2x + (4 \times 36) - (4 \times x)$
$= 2x + 144 - 4x$
$= (2x - 4x) + 144$
$= - 2x + 144$
$= - 2( x - 72)$

3 0

3 years ago

Read 2 more answers

What is the interquartile range (IQR) of the data summarized on the box plot?

andreev551 [17]

C) 30 * IQR is the box. So the highest point on the box is 95 and the lowest is 65, which makes the difference 30. I hope this helped!!

4 0

3 years ago

Read 2 more answers

Sean b= 5,79; c= 10,4,el angulo A= 54,46°, el angulo C mide ?

Rzqust [24]

Answer:

$C \approx 91.732^{\circ}$

Step-by-step explanation:

(This exercise is presented in Spanish and for that reason explanation will be held in such language)

El lado restante se determina por la Ley del Coseno:

$a = \sqrt{b^{2}+c^{2}-2\cdot b\cdot c \cdot \cos A}$

$a = \sqrt{5.79^{2}+10.4^{2}-2\cdot (5.79)\cdot (10.4)\cdot \cos 54.46^{\circ}}$

$a \approx 8.466$

Finalmente, el angulo C se halla por medio de la misma ley:

$\cos C = - \frac{c^{2}-a^{2}-b^{2}}{2\cdot a \cdot b}$

$\cos C = -\frac{10.4^{2}-8.466^{2}-5.79^{2}}{2\cdot (8.466)\cdot (5.79)}$

$\cos C = -0.030$

$C \approx 91.732^{\circ}$

3 0

3 years ago

What is 6(x+4)? Show work

natulia [17]

We will use distribution

we will multiply 6 to each variable and number in the parenthesis.
6 times x plus 6 times 4
which is 6x +24

8 0

3 years ago

Read 2 more answers