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3 years ago

Evaluate for x=-7 and y=-3 11x - 4y

Mathematics

2 answers:

Triss [41]3 years ago

8 0

Answer:

Is -65

Step-by-step explanation:

Used a calculator

never [62]3 years ago

8 0

Step-by-step explanation:

x=-7 so 11x becomes 11 x-7

11 x -7=-77

y=-3 so -4y becomes -4 x -3

-4 x -3=-12

-77-12=-89

I hope it helps!

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7.19

Step-by-step explanation:

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4 years ago

given f(x)=3^x-2 and g(x)=f(3x)+4, write the function rule for function g and describe the types of transformations that occur b

Leviafan [203]

Answer:

$g(x)=3^{3x}+2$

The transformation that occurs from $f(x)\rightarrow g(x)$ is compression by 3 units horizontally and shift of 4 units upwards.

Step-by-step explanation:

Given

$f(x)=3^x-2$

$g(x)=f(3x)+4$

Translation Rules:

$f(x)\rightarrow f(cx)$

If $c>1$ the function is compressed $c$ units horizontally.

If $c$ and $c>0$ the function stretches $c$ units horizontally.

$f(x)\rightarrow f(x)+c$

If $c>0$ the function shifts $c$ units to the up.

If $c$ the function shifts $c$ units to the down.

Applying the rules to $f(x)$

Step 1

$f(x)\rightarrow f(3x)$

$f(3x)=3^{3x}-2$

[compressed $3$ units horizontally]

Step 2

$f(3x)\rightarrow f(3x)+4=g(x)$

$f(3x)+4=3^{3x}-2+4$

∴ $g(x)=3^{3x}+2$

[shifts 4 nits up]

∴ The transformation that occurs from $f(x)\rightarrow g(x)$ is compression by 3 units horizontally and shift of 4 units upwards.

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3 years ago

10x + 2 y = 24 <br>-5 x + y = -18

wlad13 [49]

Answer:

(3,-3)

Step-by-step explanation:

First you divide 2 out of the first equation and it turns into 5x+y=12.

Then you write one on top of the other so you can add them. It looks like:

5x + y = 12

-5x + y = -18

Then you add them together and the 5x's cancel each other out and you are left with 2y = -6

So then you divide both sides by 2 and get y = -3

Then you plug -3 into the second equation because it is simpler and get -5x - 3 = -18

So then you add three to both sides and get -5x = -15

And finally you divide both sides by -5 and get x=3

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4 years ago

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Dafna1 [17]

Answer:

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Step-by-step explanation:

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3 years ago

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Margarita [4]

Answer:

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Step-by-step explanation:

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3 years ago