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Bumek [7]
4 years ago
5

NEED HELP ASAPPPPPPP

Mathematics
1 answer:
kobusy [5.1K]4 years ago
5 0
\boxed{y=2^x-1}

for\ x=0\to y=2^0-1=1-1=0\to(0;\ 0)
other
It's the graph of the function y=2^x shifted 1 unit down y=2^x-1
Look at the picture.

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For each equation find all the roots<br><br><br> PLEASE HELP I AM SO CONFUSED
worty [1.4K]

Answer:

Step-by-step explanation:

13.

x³-x²-x-2=0

x³-2x²+x^2-2x+x-2=0

x²(x-2)+x(x-2)+1(x-2)=0

(x-2)(x²+x+1)=0

x-2=0,x=2

x²+x+1=0

x=\frac{-1\pm\sqrt{1^2-4*1*1}}{2*1}} \\x=\frac{-1 \pm\sqrt{1-4} }{2} \\x=\frac{-1 \pm\sqrt{-3}}{2} \\x=\frac{-1\pm\sqrt{3} \iota}{2}

<em>12.</em>

<em>3x^4-11x³+15x²-9x+2=0</em>

<em>\[3x^4-3x^3-8x^3+8x²+7x²-7x-2x+2=0\]</em>

<em>3x³(x-1)-8x²(x-1)+7x(x-1)-2(x-1)=0</em>

<em>(x-1)[3x³-8x²+7x-2]=0</em>

<em>x-1=0,gives x=1</em>

<em>3x³-8x²+7x-2=0</em>

<em>3x³-3x²-5x²+5x+2x-2=0</em>

<em>3x²(x-1)-5x(x-1)+2(x-1)=0</em>

<em>(x-1)(3x²-5x+2)=0</em>

<em>x-1=0,gives x=1</em>

<em>3x²-5x+2=0</em>

<em>3x²-3x-2x+2=0</em>

<em>3x(x-1)-2(x-1)=0</em>

<em>(x-1)(3x-2)=0</em>

<em>x-1=0,gives x=1</em>

<em>3x-2=0, gives x=2/3</em>

<em>so roots are 2/3,1,1,1</em>

<em />

<em />

3 0
2 years ago
Determine weather each table represents a linear, quadratic, or exponential function.
solong [7]

Answer:

A: Exponential

B: Quadratic

C: Linear

Step-by-step explanation:

Solution:-

- We will closely inspect each Table and find the difference between each "Y" value at every unit increase in "x" value:

Table A:

 X            Y              ΔY/ΔX

 1             5               xxxxxx              Exponential because [ ΔY/ΔX ]          

 2            11              11 - 5 = 6            increases at the fastest rate out of all

 3           29             29 - 11 = 18         functions.

 4           83             83 - 29 = 54

 5           245          254 - 83 = 171

 6           731           731 - 254 = 477

Table B:

 X            Y                 ΔY/ΔX            Δ^2Y/ΔX^2          

 0             5                 xxxxxx              xxx             Quadratic because

 1              7                 7 - 5 = 2            xxx            Δ^2Y/ΔX^2 is a constant

 2             13               13 - 7 = 6           6-2 = 4       for all quadratic functions

 3             23              23 - 13 = 10       10-6 = 4

 4             37              37 - 23 = 14       14-10 = 4

 5             55             55 - 37 = 18        18-14 = 4

Table C:

 X            Y                 ΔY/ΔX                      

 3             20               xxxxxx                 Linear because

 6             18                 2 / 3                    ΔY/ΔX is a constant

 9             16                 2 / 3                   for all linear functions

 15            12                 2 / 3      

 27            4                  8/12 = 2/3      

 39           -4                  8/12 = 2/3      

3 0
3 years ago
Write an equation of the line that passes through (−5, −1) and is parallel to the line y = 4x − 6.
vaieri [72.5K]

Answer:

The equation is y = 4x + 19

Step-by-step explanation:

y = 4x - 6    Using y = mx + b, the slope = 4.  

Parallel lines have the same slope.

Now substitute the slope = 4 and the given ordered pair (-5, -1) into the slope-intercept form and solve for b.

y = mx + b

-1 = 4(-5) + b

-1 = -20 + b

19 = b

Now substitute into y = mx + b   m = 4 and b = 19

The equation is y = 4x + 19

8 0
3 years ago
Write the mixed number as a fraction.<br> 4 1/3
Katyanochek1 [597]
Improper fraction: 13/3
6 0
4 years ago
Read 2 more answers
PLS HELP.....
Gemiola [76]
The second one because Idk I’m just guessing lol it doesn’t look like it should be there though
3 0
3 years ago
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