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Leni [432]
3 years ago
15

What is the line of symmetry of the parabola y=x2+6x-9?

Mathematics
1 answer:
Rzqust [24]3 years ago
5 0
First we have to find the vertex (h,k) h is also x and it also is the a xis symmetry

1st: group the number
(X2+6x)-9

2nd: use b/2

6/2 = 3 , 3^2= 9

(X2+6x+9)-9-9

(X2 + 3)-18

Vertex is 3,-18 so the symmetry is 3
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Answer correctly please
Paul [167]

Answer:

\$272,49

Step-by-step explanation:

7. \displaystyle /text{The answer makes sense because since the depreciation rate is 15%, we know that we need to use the "exponential decay" formula.}

6. \displaystyle /text{After a depreciation rate of 15% for the past 8 years, the stock is now worth approximately $272,49.}

5. \displaystyle 1000[0,85]^8 = 272,490525 ≈ \$272,49

4. \displaystyle 1000 = a \\ -15\% + 100\% = 1 - r; 85\% = 1 - r \\ 8\:years = time\:[t]

3. \displaystyle /text{We need to use the "Exponential Decay" formula} - f(t) = a[1 - r]^t, where a > 0

2. \displaystyle /text{How much is the stock worth after a depreciation rate of 15% per year?}

1. \displaystyle /text{initial amount: $1000, a depreciation rate of 15%, and a time period of 8 years}

I am joyous to assist you anytime.

5 0
3 years ago
Help me pls I don’t know how to do this
rusak2 [61]

Answer:

radius=6.68cm

Step-by-step explanation:

Formula to find radius:

r=\frac{C}{2\pi }

r=42/2\pi

r=42/2(3.14)

r=6.68cm

<em>hope this helps......</em>

6 0
3 years ago
What is equivalent to log 25<br> 125
nexus9112 [7]
Log25 (5•25) = 3 over 2 aka 3/5
5 0
3 years ago
30 POINTS IF ANSWERED IN THE NEXT FIVE MINUTES. Ms. Roth has made 200 headbands and is deciding what price to charge for them. S
gizmo_the_mogwai [7]

Answer:

198.5

Step-by-step explanation:

() = 200 - 1.5

() = 198.5

im not sure if this is what you are asking, but i hope it helps

8 0
3 years ago
Find the area of the rectangle.
umka2103 [35]
The area is length x width which means it would be 14 x 8

14 x 8 = 112 so the area of the rectangle is 112 square ft.
8 0
3 years ago
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