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Svetllana [295]
2 years ago
11

Whats wrong with my answers?

Mathematics
1 answer:
malfutka [58]2 years ago
8 0

77a)

y=0.5x-2\implies y=\cfrac{x}{2}-2\implies \stackrel{x-intercept}{0=\cfrac{x}{2}-2} \\\\\\ 2=\cfrac{x}{2}\implies 4=x\qquad \qquad \boxed{(4~~,~~0)} \\\\\\ \stackrel{y-intercept}{y=0.5(0)-2}\implies y=-2\qquad \qquad \boxed{(0~~,~~-2)}

77b)

y=-0.4x+2\implies y=-\cfrac{4x}{10}+2\implies y=\cfrac{2x}{5}+2 \implies \stackrel{x-intercept}{0=\cfrac{2x}{5}+2} \\\\\\ -2=\cfrac{2x}{5}\implies -10=2x\implies \cfrac{-10}{2}=x\implies -5=x~\hfill \boxed{(-5~~,~~0)} \\\\\\ \stackrel{y-intercept}{y=-0.4(0)+2}\implies y=2\qquad \qquad \boxed{(0~~,~~2)}

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No one can give you an answer unless you provide a picture of the graphs
3 0
2 years ago
Help me with thisss simplify : 6³/6⁶
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7 0
3 years ago
If : f(x)=x^2, g(x)=x-1. Find (f×g)(x).<br>​
kramer

Answer:

  • \boxed{ f\cdot{g}(x) = x {}^{3}  - x {}^{2}}

Step by step explanation:

Given that,

f(x) =  {x}^{2}

g(x) = x - 1

Solution:

Solving for (f•g)(x):

= f(x) \cdot g(x)

Now substitute the given values.

= x {}^{2}  \cdot(x - 1)

= x {}^{2} (x - 1)

Apply distributive property:

= (x ^{2}  \cdot x) - x {}^{2}  \cdot 1

  • \boxed{ f\cdot{g}(x) =  x {}^{3}  - x {}^{2}}

Hence,f•g(x) will be x {}^{3}  - x {}^{2}.

8 0
2 years ago
I need help ASAP. Thank you
Fed [463]
Here is the link to the graph. You can scale it and tweak it.
https://www.desmos.com/calculator/mawkflj9ws

Hope this helped!


8 0
3 years ago
The graph of the function, f(x) = - 3x2 , opens which way up or down
DiKsa [7]
I'm guessing that the 2 in that is ^2? if so, it opens down. 
3 0
3 years ago
Read 2 more answers
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