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3 years ago

11

Evaluate the function?

1 answer:

marusya05 [52]3 years ago

8 0

Answer:

290

Step-by-step explanation:

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

f(10) = $3*(10)^{2} - 10$

= 3 * 100 - 10

= 300 - 10

= 290

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Systems of equations <br> 2x+2y=16<br> 2x+6y=28

Sholpan [36]

2x+2y=16
<span>2x+6y=28

all you have to do is subtract to get rid of the 2x and solve for y

2x+2y = 16
-2x-6y = -28
---------------------------
0 -4y = -12
y = 3

now we got y we can plug in or do the systems of equation again and find x. lets do systems of equations again.

</span>2x+2y=16
<span>2x+6y=28
</span><span>
this time i am going to multiple the top by -3 and then add the equations hopefully it is clear why I multiple by -3
</span><span>
-3(2x+2y = 16)
2x +6y = 28

-6x - 6y = -48
</span>2x +6y = 28
------------------------
-4x + 0y = -20

x = 5

4 0

4 years ago

Read 2 more answers

What is the inverse of the function f(x) = one-ninthx + 2?

Bumek [7]

Answer: 9x - 18

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

Inverse is when you swap the x's and y's and solve for y

$\text{Given: }\quad y=\dfrac{1}{9}x+2\\\\\text{Swapped: }x=\dfrac{1}{9}y+2\\\\.\qquad \quad x-2=\dfrac{1}{9}y\\\\.\qquad 9(x-2)=y\\\\.\quad \large\boxed{9x-18=y}$

3 0

3 years ago

ASAP I NEED HELP ON A BONUS QUESTION AND I NEED THESE EXTRA POINTS ILL GIVE YOU 20 POINTS

jarptica [38.1K]

I think the answer is 192.

4 0

3 years ago

5(112-32)/9=???<br><br> use the order of operations

NISA [10]

Answer: 44.44

Step-by-step explanation: Order of operations - PEMDAS (parentheses, exponents, multiplication, division, addition, subtraction)

Parentheses: (112-32) = 80

Multiplication: 5(80) = 400

Division:400/9 = 44.4444444444

3 0

4 years ago

Can someone help me out with some pesky math quiz :) I put a pic

Sindrei [870]

1. Simplifying ∛54 gives 3∛2

2. 27^1/3 * (27)^3 is equal to 27

3. The expression (2j4k)^4/5 can be written as $\sqrt[4]{32j^{20}k^{5} }^{5}$ making the first option the correct option

4. simplifying $\sqrt[4]{16x^{4} y^{12} }$ will result to 2x∛y

5. simplifying $\sqrt[5]{2940x^{13} y^{7} }$ will result to $14x^{6} y^{3} \sqrt{15xy}$ making the last option the correct option

<h3>How to simplify $\sqrt[5]{2940x^{13} y^{7} }$ </h3>

<u>given data</u>

$\sqrt[5]{2940x^{13} y^{7} }$

= ( 2940 * x^13 * y^7 )^1/5

$= ( 2^2 * 5 * 3 * 7^2 * x^{12} * x * y^6 * y )^{1/5}$

$= ( 2^2 * 5 * 3 * 7^2 * x^{12} * x * y^6 * y )^{1/5*5/2}$

$= ( 2^2 * 5 * 3 * 7^2 * x^{12} * x * y^6 * y )^{5/5*1/2}$

multiplying the values inside the parenthesis by ^1/2

$= ( 2 * 5^{1/2} * 3^{1/2} * 7 * x^{6} * x^{1/2} * y^3 * y^{1/2} )$

$= ( 2 * 5^{1/2} * 3^{1/2} * 7 * x^{6} * x^{1/2} * y^3 * y^{1/2} )$

$= ( 14* 5^{1/2} * 3^{1/2} * x^{6} * x^{1/2} * y^3 * y^{1/2} )$

$= ( 14 * x^6 * y^3 ) ( 5^{1/2} * 3^{1/2} * x^{1/2} * y^{1/2} )$

$= ( 14x^6y^3 ) ( 15^{1/2} * x^{1/2} * y^{1/2} )$

$= ( 14x^6y^3 ) ( 15xy)^{1/2}$

$= ( 14x^6y^3 ) \sqrt{( 15xy)}$

we can therefore say that the last option is the answer

Read more on equations here: brainly.com/question/22688504

#SPJ1

3 0

1 year ago