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Sav [38]
3 years ago
9

3. Solve by completing the square. x^2+8x-9=0​ The solutions are x =

Mathematics
2 answers:
Elina [12.6K]3 years ago
6 0
Step 1: Factor left side of equation.
(x - 1)(x + 9) = 0

Step 2: Set factors equal to 0.
x-1=0 or x+9=0
x = 1 or x = -9

The solutions are x = 1 or x = -9
Lelu [443]3 years ago
3 0

Answer:

is it like exponets

Step-by-step explanation:

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Can someone help
lubasha [3.4K]

9514 1404 393

Answer:

  C.  jump discontinuity at x=-2

Step-by-step explanation:

At x=-2, you have to lift your pencil to keep drawing the graph. That means there's a jump discontinuity there.

This function has a jump discontinuity at x = -2.

__

<em>Additional comments</em>

At x=3, there is no discontinuity in the function. The <em>derivative</em> of the function has a discontinuity there, as there is an abrupt change in slope at that point.

If left and right limits exist and are the same at a point, but the graph is not defined at that point, then a <em>removable</em> discontinuity exists. All that is needed to fill the hole is to define the function at that point.

8 0
3 years ago
EASY QUESTION**
vladimir2022 [97]
F(x)= -x^3+x ( don’t add the ^ but replace it with the 3 if you know what i mean )
5 0
3 years ago
I've been stuck on this for a while
Lynna [10]
First find the circumference of the patio. 
Diameter is πd. 
8 x 3.14 = 25.12 
210º is approximately 58%. 
Multiply 25.12 by .58 to get approximately 14.7 meters. 
Hope this helps!
7 0
3 years ago
Evaluate the expression 6/5x when x=20
Sindrei [870]

Answer:

24

Step-by-step explanation:

6 divided by 5 times 20 =24

6/5*20= 24

7 0
2 years ago
Anna has let out 50 meters of kite string when she observes that her kite is directly above emily. If anna is 35 meters from emi
zloy xaker [14]
If you draw a picture you can see that the kite, Anna and Emily form a right triangle.

so you can use the pythagorean theorem to find the answer. 

35 ^{2} +  b^{2} = 50^{2}

1,225 + b^{2} = 2,500

b^{2} = 1,275

b = 35.7 meters
3 0
3 years ago
Read 2 more answers
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