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Len [333]
3 years ago
5

Use the function to find f(2) f(x) = 3x + 4​

Mathematics
1 answer:
DIA [1.3K]3 years ago
8 0

Answer:

I love Math anyways

The ans is in the picture with the  steps how i got it

(hope this helps can i plz have brainlist :D hehe)

Step-by-step explanation:

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30 POINTS,NEED HELP ASAP !!!
zaharov [31]

Answer: OPTION A.

Step-by-step explanation:

You can observe that in the figure CDEF the vertices are:

C(-2,-1),\ D(-2,0),\ E(2,2)\ and\ F(2,1)

And in the figure C'D'E'F'  the vertices are:

C'(-8,-4),\ D'(-8,0),\ E'(8,8)\ and\ F'(8,4)

For this case, you can divide any coordinate of any vertex of the figure C'D'E'F' by any coordinate of any vertex of the figure CDEF:

For C'(-8,-4) and C(-2,-1):

\frac{-8}{-2}=4\\\\\frac{-4}{-1}=4

Let's choose another vertex. For E'(8,8) and E(2,2):

\frac{8}{2}=4\\\\\frac{8}{2}=4

You can observe that the coordinates of C' are obtained by multiplying each coordinate of C by 4 and the the coordinates of E' are also obtained by multiplying each coordinate of E by 4.

Therefore, the rule that yields the dilation of the figure CDEF centered at the origin is:

(x, y)→(4x, 4y)

7 0
3 years ago
Read 2 more answers
Word problem: Ms.Perez often gives a short one problem quiz during her 48 minute class. If a student is out of the room at the t
shepuryov [24]
1/15 because it’s 1 in every 15 minutes.
8 0
3 years ago
Find the area of a circle with a
lina2011 [118]

Answer:

254.34 in.²

Step-by-step explanation:

area = πr²

given, radius = 9 cm

according to formula

→ 3.14 × (9)²

→ 3.14 × 81

→ 254.34 in.² ans.

hope this helps you !

6 0
3 years ago
Write these decimal fractions in words 42/100
hodyreva [135]
Forty two over one hundred 
7 0
3 years ago
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The lengths of the sides of a triangle are consecutive integers and the largest angle is twice the smallest angle. Find the meas
eduard

Answer:

  41°

Step-by-step explanation:

I could not think of an easy way to solve this, apart from having a graphing calculator do it. In the end, I found I could solve it analytically using a combination of the law of sines and the law of cosines.

Let x represent the length of the shortest side, and θ the smallest angle. Then the <em>law of sines</em> tells you ...

  sin(θ)/x = sin(2θ)/(x+2)

Cross-multiplying and using the trig identity for sin(2θ), we have ...

  (x +2)sin(θ) = 2x·sin(θ)cos(θ)

Dividing out sin(θ), we see that ...

  cos(θ) = (x+2)/(2x)

___

The law of cosines for the shortest side and smallest angle tells you ...

  x^2 = (x+1)^2 + (x+2)^2 - 2(x+1)(x+2)·cos(θ)

Substituting the above expression for cos(θ), this can be rewritten as ...

  0 = (x^2 +2x +1) +(x^2 +4x +4) -x^2 -(x+1)(x+2)^2/x

  0 = x^2 +6x +5 -(x+1)(x+2)^2/x . . . . . . collect terms outside the fraction

  0 = x(x+5)(x+1) -(x+1)(x+2)^2 . . . . . . . . factor and multiply by x

We know that x=-1 is not a solution, so we can divide by that factor:

  0 = x^2 +5x -(x^2 +4x +4) . . . . . multiply it all out

  0 = x -4 . . . . . . . . . . . . . . . . . . . . collect terms

  4 = x

so, cos(θ) = (4+2)/(2·4) = 6/8 = 3/4

and the angle of interest is ...

  θ = arccos(3/4) ≈ 41.40962° ≈ 41°

_____

The attachment shows a triangle-solver's result using the consecutive integers for side lengths. It confirms the answer we have here.

7 0
3 years ago
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