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Triss [41]
3 years ago
6

If x=4x+5 what is the value of f(-3)

Mathematics
2 answers:
kolbaska11 [484]3 years ago
6 0

Step-by-step explanation:

f(x) = 4x + 5 \\ f( - 3) = 4 \times( -  3 )+ 5  \\ f( - 3) =  - 12 + 5  \\ f( - 3) = - 7

irina1246 [14]3 years ago
5 0
You plug in -3 for x for 4(-3)+5 =-7
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Which is equivalent to 9+2i -(6+ 4i)?<br> [A] 3-212<br> [C] 15+6i<br> [B] 3-6<br> [D] 3-2i
Vinvika [58]
It's D, 3-2i.

Hope this helps
8 0
3 years ago
Please help!!
weqwewe [10]

Answer:

 The vertex of the parabola   = (-7 , -4)  

Step-by-step explanation:

<u><em>Step(i):-</em></u>

Given that the parabola  y = 4 x² + 56 x +192

                                 y = 4 (x² + 14 x + 48 )

                                 y = 4 ( x² + 2 ×  7 (x) + 49-1)

                                 y = 4 ( x² + 2 ×  7 (x) + 49)- 4

we apply the formula

(a +b)² = a² + 2ab + b²

                                y = 4 ( x + 7 )² - 4

<u>Step(ii):-</u>

<em>The general form of the parabola in algebraically</em>

<em>                               y = a ( x-h)² +k</em>

<em>The equation </em>

<em>                           y = 4 ( x + 7 )² - 4</em>

                          y = 4 ( x-(-7))² - 4

  The vertex of the parabola (h,k) = (-7 , -4)  

<u>Final answer:-</u>

The vertex of the parabola  = (-7 , -4)  

8 0
3 years ago
Solve -6f + 13 = 2f - 11​
igor_vitrenko [27]

Answer:

f = 3

Step-by-step explanation:

Solve for f:

13 - 6 f = 2 f - 11

Subtract 2 f from both sides:

13 + (-6 f - 2 f) = (2 f - 2 f) - 11

-6 f - 2 f = -8 f:

-8 f + 13 = (2 f - 2 f) - 11

2 f - 2 f = 0:

13 - 8 f = -11

Subtract 13 from both sides:

(13 - 13) - 8 f = -13 - 11

13 - 13 = 0:

-8 f = -13 - 11

-13 - 11 = -24:

-8 f = -24

Divide both sides of -8 f = -24 by -8:

(-8 f)/(-8) = (-24)/(-8)

(-8)/(-8) = 1:

f = (-24)/(-8)

The gcd of -24 and -8 is -8, so (-24)/(-8) = (-8×3)/(-8×1) = (-8)/(-8)×3 = 3:

Answer:  f = 3

4 0
3 years ago
Read 2 more answers
Will mark brainliest and 50 points.<br> What is (2^8x5^-5x19^0)^-2x(5^-2/2^3)^4x2^28 show your work.
Kaylis [27]

Answer:

im quite confused with the way its been layed out

cant tell if ur multiplying of its a X

Step-by-step explanation:

(2^8 times 5 ^-8 times 1) ^-2x times 5^-2 over 2^3 times 4 times 2 ^28

(2^-16x times 5^10x times 5^-2 over 8 times 4 times 2^28

2^16=28 times 5 ^10x

------------------------------- over

50

8 0
3 years ago
6=g+8. Solving one step Equations
skelet666 [1.2K]

Answer:

g = -2

Step-by-step explanation:

6=g+8

Subtract 8 from each side

6-8=g+8-8

-2 =g

7 0
3 years ago
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