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3 years ago

1 point

Mathematics

1 answer:

damaskus [11]3 years ago

8 0

Answer:

Step-by-step explanation:

I think the question is card(A)=20,card(B)=15,card(A∩B)=10, then what iscard(A∪B)

You can solve this question by drawing a picture like this to visualize the problem.

Thus the answer is card(A∪B)=card(A)+card(B)−card(A∩B)=25

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SVETLANKA909090 [29]

Answer:

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3 0

3 years ago

The inverse of the function f(x) = x + 10 is shown.

Vadim26 [7]

we have

$f(x) = \frac{1}{2}x + 10$

Step $1$

Let

y=f(x)

$y = \frac{1}{2}x + 10$

Exchange the variable x for y and variable y for x

$x = \frac{1}{2}y + 10$

Clear variable y

Multiply by $2$ both sides

$2x = y + 20$

$y = 2x-20$

Let

$f(x)^{-1} =y$

$f(x)^{-1}=2x-20$

therefore

the answer is

the inverse of the function is $f(x)^{-1}=2x-20$

the missing value is $20$

5 0

3 years ago

Read 2 more answers

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aleksklad [387]

Answer:

Step-by-step explanation:

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3 years ago

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Leya [2.2K]

Answer:

y ≥ 1

Step-by-step explanation:

According to the graph, the y values start at 1 and go to ∞. Therefore, the range of the function is y ≥ 1.

6 0

3 years ago

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noname [10]

Answer:

Its the bottom left one :)

Step-by-step explanation:

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