3 years ago

Plz help !! Needed to graduate

1 answer:

8 0

$x {}^{2} - x - \frac{5}{2} = 0$
(1±√(1-4(1)(-5/2))/(2)

(1±√1+10)/(2)

$\frac{1 + \sqrt{11} }{2} \\ \frac{1 - \sqrt{11} }{2}$

You might be interested in

Write the slope-intercept form of the equation of each line given the slope and y-intercept.

Sergio039 [100]

Slope intercept form: y=mx+b

y=5x-5

y=-3/4x-1

I’m pretty sure…

4 0

3 years ago

Simplify.<br> A12 over a7

max2010maxim [7]

Answer:

a^5.

Step-by-step explanation:

a^12 / a^7 = a^(12 - 7) = a^5.

Hope this helps!

4 0

3 years ago

I’m confused on what’s going on here, so if someone could explain it I would be super grateful.

pshichka [43]

<h2>Range of x </h2><h3> $-\frac{1}{5}$ and x>6</h3><h3>Step-by-step explanation:</h3>

Given AB = 4x + 5, BC = 3x - 2 and AC 9x -5

The sum of the length of any two sides of a triangle is greater than the length of third side.

Case I

AB + BC > AC

⇔4x +5 +3x -2 > 9x -5

⇔7x + 3 >9x - 5

⇔ 7x -9x > -5 -3

⇔-2x > -8

⇔x <4

Case II

if AB+AC > BC

4x +5 +9x -5> 3x -2

⇔13x >3x -2

⇔ 13x -3x> -2

⇔10x > -2

⇔x > $-\frac{1}{5}$

Case III

AC+BC > AB

⇔9x - 5 +3x - 2 > 4x +5

⇔6x -7 > 4x +5

⇔6x -4x >5+7

⇔2x > 12

⇔x > 6

8 0

3 years ago

Ms. Hill goes to a burger place in California and orders 5 hamburgers and 3 fries and 6 hamburgers and 2 fries. What could she d

tamaranim1 [39]

She can order 11 burgers and 5 orders of fries

4 0

3 years ago

When you have an x value of zero in a point like this one (0,8) where is the point located on the graph? When you have a y value

MArishka [77]

Answer:

well I don't have a picture to explain it but (0,8) would be on the y axis and 8 on the x-axis ( it would go up 8 times and stay on the same line)

it would be -3 on the y axis and it wouldn't move up or down (move 3 points to the left)

Step-by-step explanation:

(x,y) when the x is 0 it doesn't move on the x-axis (left or right) and when it is 0 it doesn't move on the y-axis (up or down)

hope that makes sense!

3 0

2 years ago