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Zanzabum
2 years ago
9

Please help to answer this question:)

Mathematics
2 answers:
alisha [4.7K]2 years ago
6 0

Answer:

a function is defined by f(x),#10x+9

find

a, f(-2)

b, k,if f(k)#k

c, f-1(x)

rodikova [14]2 years ago
5 0
I hope this helps you :)

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4-11 help pleaseeee‼️
mixer [17]
I will do #4.
First divide by 5.
6x^2 + 7x + 3.
When trying to factor this, I've come to realize that it is unfactorable.
3 0
3 years ago
Which expression is equivalent to 3(x-2) +2x
Gala2k [10]

Answer:

5x-6

Step-by-step explanation:

6 0
3 years ago
Point P(3, 9) in the coordinate plane is rotated 90 degrees counterclockwise about the origin. What are the coordinates of its i
Bumek [7]

Answer:

  P'(-9, 3)

Step-by-step explanation:

The transformation for rotation counterclockwise about the origin by some angle α will be ...

  (x, y) ⇒ (x·cos(α) -y·sin(α), x·sin(α) +y·cos(α))

When the angle is α = 90°, this reduces to ...

  (x, y) ⇒ (-y, x)

You have (x, y) = (3, 9), so the image point is P'(-9, 3).

__

<em>Additional comment</em>

The "work" is applying the right sign and choosing the right coordinate to fill in the values (-y, x). I find it easier to look up the transformations for ±90° and 180°, rather than try to derive them from first principles every time. Your text may have a list:

  • 90° CCW or 270° CW: (x, y) ⇒ (-y, x)
  • 90° CW or 270° CCW: (x, y) ⇒ (y, -x)
  • 180°: (x, y) ⇒ (-x, -y)
8 0
3 years ago
At the malt shop a large chocolate shake takes 8/9 of a pint of milk.If the medium shake takes 1/7 the amount of the large how m
jasenka [17]
There are several information's of immense importance in the problem. Based on these information's the answer to the question can be easily reached. The only thing that has to be kept in mind is the calculation part, otherwise it is a simple problem.
Now it is given that:
A large chocolate shake takes 8/9 of a pint of milk.
Then
Amount of milk required to make medium shake = (8/9) * (1/7) of a pint
                                                                              = 8/63 of a pint
Then it can be said that for making a medium chocolate shake , 8/63 of a pint of milk is required. This is the simplest form of the fraction and it cannot be expressed as a mixed number since the denominator is higher than the numerator.
7 0
3 years ago
A speedboat can travel 24 miles on 3 gallons of
valkas [14]

Answer:

96 miles

Step-by-step explanation:

3 multiplied by what gives you 24?

8 right?

So, what you want to do is 8 multiplied by 12.

Doing so you will reach the conclusion that 12 multiplied by 8 equals 96.

So you can go 96 miles on a speedboat with 12 gallons of gas.

I hope this helped you :)

5 0
2 years ago
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