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notsponge [240]
3 years ago
11

I need help with this question plzzz

Mathematics
1 answer:
VikaD [51]3 years ago
6 0

Step-by-step explanation:

a refuse regular function tries to calculate a y value for a given x (input) value.

the inverse function turns this around and tries to calculate the x (input) value for a given y functional value.

e.g. when we know f(x) = 8, then what was the x value leading to this 8 fungible value ?

in order to turn this around, we solve the same functional equation for x instead of for y.

in our example here

f(x) = y = 3x -6

y + 6 = 3x

x = y/3 + 2

and now, to write the inverse function as normal function, we simply exchange the x and y names :

y = x/3 + 2

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Multiply 340 by 20%
first change 20% into a decimal which is 0.2
340*0.2 = 68
so it decreased by 68. 
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4 years ago
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Derek had a bill of $29 last month on he Call-a-Lot Plan. How many minutes did he use?
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If a circle has an area of 84π units then what is the measure of its
Tatiana [17]
  • <em>Answer:</em>

<em>a. 2√21 units</em>

  • <em>Step-by-step explanation:</em>

<em>Hi there ! </em>

<u><em>Area formula</em></u>

<em>A = π·r²</em>

  • <em>replace A</em>

<em>84π = πr²</em>

<em>r² = 84π/π</em>

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To solve a system of inequalities graphically, you just need to graph each inequality and see which points are in the overlap of
Neporo4naja [7]

Consider a system of inequalities

Consider inequality in  two variable

1.  a x + b y ≤ c

2 .  p x + q y ≥ r   3. x ≥ 0  4. y≥ 0

By drawing the graph ,You can find the region bounded by inequality 1, then reason bounded by inequality 2 , and then you can find the region common to both the inequality.

Consider the given  inequality

x + y ≤2

x + y ≥1,

x≥ 0, y≥0.

You can find the solution below.

So, the Statement, To solve a system of inequalities graphically, you just need to graph each inequality and see which points are in the overlap of the graphs is True.



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