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MA_775_DIABLO [31]
3 years ago
12

Whats the answer for substitution x=9 y=3x-1

Mathematics
2 answers:
Blizzard [7]3 years ago
8 0

Answer:

x=9, y=26. (9, 26).

Step-by-step explanation:

x=9

y=3x-1

--------

y=3(9)-1=27-1=26

nikitadnepr [17]3 years ago
7 0

Answer:

y = 26

Step-by-step explanation:

Plug the value of X into the equation.

y = 3(9) - 1

Then, simplify the equation.

y = 27 - 1

y = 26

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F(x)=4x-3<br> G(x)=x^3+2x<br> Find (f-g)(x)
dexar [7]
You gotta remember that (f-g)(x) means f(x) - g(x).

So, in this case, f(x) is [4x - 3], g(x) is [x^3 + 2x].
So that : f(x)-g(x) = [4x-3] - [x^3+ 2x] = -x^3 + 4x - 2x - 3 = -x^3 + 2x - 3
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3 years ago
Find f(-2) if f(x) =x^4 +2x^2-1
Ierofanga [76]

Answer:

Plug -2 in for x of f(x)

--> -2^4 + 2(-2)^2 - 1

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4 0
2 years ago
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A suspension bridge has two main towers of equal height. A visitor on a tour ship
Scilla [17]

Answer:

The Height of the tower is 188.67 ft

Step-by-step explanation:

Given as :

The angle of elevation to tower = 15°

The distance travel closer to tower the elevation changes to 42° = 497 ft

Now, Let the of height of tower = h  ft

The distance between 42°  and  foot of tower = x  ft

So, The distance between 15° and  foot of tower =  ( x + 497 )  ft

So, From figure :

<u>In Δ ABC </u>

Tan 42° = \frac{perpendicular}{base}

Or , Tan 42° = \frac{AB}{BC}

Or,  0.900 = \frac{h}{x}

∴ h = 0.900 x

Again :

<u>In Δ ABD </u>

Tan 15° = \frac{perpendicular}{base}

Or , Tan 15° = \frac{AB}{BD}

Or,  0.267 = \frac{h}{( x + 497 )}

Or,  h = ( x + 497 ) × 0.267

So, from above two eq  :

     0.900 x =  ( x + 497 ) × 0.267  

Or, 0.900 x - 0.267 x =  497  × 0.267  

So, 0.633 x = 132.699

∴               x = \frac{132.699}{0.633}

Or,            x = 209.63  ft

So, The height of tower = h = 0.900 × 209.63

Or,                                      h = 188.67 ft

Hence The Height of the tower is 188.67 ft    Answer

3 0
3 years ago
Does 3x-y=4 and 6x-2y=8 have a solution?
exis [7]

Answer:

No there is no solution

Step-by-step explanation:

X cannot be found no matter how you try to solve the simultaneous equation so therefore y can also not be found.

4 0
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HELPPPPPPPPPPPPPPPPPPPPPPPPPPPPP
sukhopar [10]

Answer:

D

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Every small block represents a hundredth.

0.54

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There are 3 of these,

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15 tenths and 12 hundredth

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7 0
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