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nordsb [41]
2 years ago
8

Find the equation of the exponential function represented by the table ​

Mathematics
1 answer:
Rainbow [258]2 years ago
7 0

Answer:

y=-3.5x^2+9.5x-4

Step-by-step explanation:

y=a*x^2+b*x+c

4=0+0+c => c=-4

2=a+b-4 =>a+b=6

1=4a+2b-4 => 4a+2b=5

2a+b=2.5

a+b=6

a=-3.5

b=9.5

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What is the inverse of f(x)=3x+6 ?
scZoUnD [109]

Answer:

\boxed{\sf \ \ f^{-1}(x)=\dfrac{x-6}{3} \ \ }

Step-by-step explanation:

hello,

we can write

fof^{-1}(x)=x \ and \ fof^{-1}(x)=f(f^{-1}(x))=3f^{-1}(x)+6 \ so\\3f^{-1}(x)+6=x \ \ subtract \ 6\\3f^{-1}(x)=x-6 \ \ divide \ \ by \ \ 3\\ f^{-1}(x)=\dfrac{x-6}{3}

hope this helps

3 0
3 years ago
​ △BCD ​ is a right triangle. The length of the hypotenuse is 19 centimeters. The length of one of the legs is 13 centimeters.
zheka24 [161]
<span>here we can use Pythogoras' theorem.
in right angled triangles the square of the hypotenuse is equal to the sum of the squares of the other 2 sides.
hypotenuse is 19 cm. One side is 13 cm and we need to find the length of the third side.
                                                                         
19</span>²<span> = 13</span>²<span> + X</span>²<span> 
X - length of the third side
                                                           
361 = 169 + X</span>²<span> 
X</span>²<span> = 361 - 169
                                                                     
X</span>²<span> = 192
                                                                             
X = 13.85 the length of third side rounded off to the nearest tenth is 13.9 cm</span>
3 0
3 years ago
Find the value of f(9)<br> y = f(x)
goblinko [34]

f(9) is the x value, find where the line is in the y direction at x = 9

The line crosses y = 3 at x = 9

Answer:

f(9) = 3

8 0
2 years ago
Possible values for the area A of the rectangle shown are 12
KatRina [158]

Answer:

idc its 12

Step-by-step explanation:

5 0
3 years ago
Pleaseeeeeeees help meee
maria [59]
12, 4 is the answer.
8 0
3 years ago
Read 2 more answers
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