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m_a_m_a [10]
3 years ago
13

im not that good at functions so is this right? if not could you explain how to do the problem? 25 points

Mathematics
2 answers:
Charra [1.4K]3 years ago
8 0

I will find one by one

\\ \sf\longmapsto f(x)=2x-1

\\ \sf\longmapsto f(1)=2(1)-1=2-1=1

\\ \sf\longmapsto f(0)=2(0)-1=-1

\\ \sf\longmapsto f(-1)=2(-1)-1=-1-1=-3

\\ \sf\longmapsto f(2)=2(2)-1=4-1=3

Studentka2010 [4]3 years ago
6 0

Answer:

f(1) = 2*1 - 1 = 1

f(0) = 2*0 - 1 = -1

f(-1) = 2*-1 - 1 = -3

f(2) = 2*2 - 1 = 3

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Please hurry; Which function increases the fastest? A. y 5 14x B. y 5 23 · 17x C. y 5 120x D. y 5 2275x^x
Maurinko [17]

Answer: y = 14^x

Step-by-step explanation:

Here the options are:

a y = 14^x

b y = -3*(17)^x

c y = 120x

d y = -275x

to see which function increases the fastest (or which function is steeper) we need to look at the first derivations of each one of these, and see which one is larger for every value of x:

the derivations are:

a y = x*14^(x - 1)

b y = -x*3*(17)^(x  - 1)

c y = 120

d y = -275

So we can already discard options c and d, because have constant rate of change.

Then we keep options a and b.

Always when we have an exponential function, like a^x and b^x

The one with the larger base will be steeper.

So if a > b, then:

a^x is steeper than b^x

In this case, the function:

y = -3*(17)^x

has a larger base, but, this function is negative.

This means that as x increases, our function will decrease, then this function will not "increase the fastest" (because it does not increase)

Then the left option (a: y = 14^x)

Will be the correct one.

(this will happen after some value of x, because two of the options have constant derivatives, these may be steeper for smaller values of x, and as x increases, we will see that y = 14^x is the one that increases the fastest)

7 0
3 years ago
Speeeed brainlest<br> eeee
egoroff_w [7]
The answer is 3 3/8. You’re welcome :)
6 0
3 years ago
Read 2 more answers
Christopher and Edward were painting wagon wheels for the school play. The pictures show how much of the wheels they painted. Ho
Marina CMI [18]

Using fractions, it is found that \frac{43}{45} of a wheel still needs to be painted.

  • On the first wheel, 4 of the 9 equal parts have been painted, that is, \frac{4}{9} of the wheel has been painted, hence \frac{5}{9} has not been painted.
  • On the second wheel, 6 of the 10 equal parts have been painted, that is, \frac{6}{10} = \frac{3}{5} of the wheel has been painted, hence \frac{2}{5} has not been painted.

The total fraction that still has to be painted is:

\frac{5}{9} + \frac{2}{5} = \frac{25 + 18}{45} = \frac{43}{45}

\frac{43}{45} of a wheel still needs to be painted.

To learn more about fractions, you can take a look at brainly.com/question/14387610

8 0
2 years ago
What is 18+5-y.this is first question
UkoKoshka [18]

<u><em>Answer:</em></u>

y = 23

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

Add the numbers:

18 + 5 - y

= 23 - y

Rearrange terms:

y = 23

8 0
2 years ago
Please help<br> Geometry <br> Will give top answer for someone to answer correctly.
Setler79 [48]

Answer:

Length of the minor arc AB = 5.27777777778 cm

Step-by-step explanation:

Here you would require a simple proportionality.

The ratio of the degree of the minor arc (95 degrees) over the total, 360 degrees of every circle, comparative to the length of the minor over the circumference (20 cm).

Here we can propose that the length of the minor can be equal to x.

Now let's substitute the known values:

95 / 360 = x / 20

Now cross multiply:

360 * x = 95 * 20 ⇒

360x = 1900 ⇒

x = 5.27777777778 ⇒

length of the minor arc AB = 5.27777777778 cm

3 0
3 years ago
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