Which of the following expressions is not equivalent to:4(3x2 + 6x)

A. 12x2 + 24x B. 2x(6x + 12) C. 6x(2x2 + 4x)

Answers

Answer 1

Answer: Answer=C

4(3x^2+6x)
can be simplified to...
12x^2+24x

To find out which expression isn't equivalent, you have to simplify them...

a=12x^x+24x

b=2x(6x+12)
b=12x^2+24x

c=6x(2x^2+4x)
c=12x^3+24x

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Solve x2 – 12x + 11 = 0 by completing the square.Question 7 options:

x = –1

No Real Solutions

x = 11 and x = 1

x = 11

Answers

The solution to the quadratic equation x² - 12x + 11 = 0 is x = 11 and x = 1.

What is the solution to the quadratic equation?

Given the quadratic equation in the question:

x² - 12x + 11 = 0

To solve the quadratic equation x² - 12x + 11 = 0 by completing the square, first the constant term to the other side of the equation:

x² - 12x + 11 = 0

x² - 12x + 11 - 11 = 0 - 11

x² - 12x = -11

Next, find the value that is equal to the square of half of b:

( b/2 )² = ( -12/2 )² = (-6)²

Add (-6)² to each side of the equation:

x² - 12x + (-6)² = -11 + (-6)²

x² - 12x + 36 = -11 + 36

x² - 12x + 36 = 25

Factor the perfect trinomial sqaure:

( x - 6 )² = 25

Solve for x:

x - 6 = ±√25

x - 6 = ±5

x = 6 ± 5

Hence, x = 6 - 5 = 1

And x = 6 + 5 = 11.

Therefore, the values of x are 1 and 11.

Learn more about quadratic equations here: brainly.com/question/1863222

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Answer:

Step-by-step explanation:

x^2 – 12x + 11 = 0

(x-11)(x-1)

x= 11, 1 completing the square

Lincoln Technical College has 856 students. They expect 700 guests for a special speaker. The custodian has set up 1,500 chairs. How many more chairs are needed if everyone is to have a seat?

Answers

Answer:

the answer would be 56 if you have plato your welcome =)

Step-by-step explanation:

Answer:

A. 56 more

Step-by-step explanation:

856 students + 700 guest = 1,556

The custodian only set out 1,500 chairs so 56 more are needed.

Which is set to ring whenever the system temperature rises above –10°c. What Fahrenheit value should you write on the label?

Answers

Whenever you need to convert a temperature expressed in celsius degrees to fahrenheit degrees, you have to use the following formula:

$^\circ F = 1.8 ^\circ C + 32$

So, if we plug the celsius temperature of -10, we get

$^\circ F = 1.8 \cdot (-10) + 32 = -18+32 = 14 ^\circ F$

Solve the system using multiplication for the linear combination method.6x – 3y = 3
–2x + 6y = 14
What is the solution to the system?
(2, 1)
(2, –3)
(2, –1)
(2, 3)

Answers

If you would like to solve the system of equations, you can calculate this using the following steps:

6x – 3y = 3
–2x + 6y = 14 /*3
_________
6x – 3y = 3
–6x + 18y = 42
_________
-3y + 18y = 3 + 42
15y = 45
y = 45/15
y = 3

6x – 3y = 3
6x - 3 * 3 = 3
6x = 3 + 9
6x = 12
x = 12/6
x = 2

(x, y) = (2, 3)

The correct result would be (2, 3).

Answer:

The answer is D

(2,3)

Step-by-step explanation:

You have a rectangular yard that measures 16 feet Long by 14 feet wide.it id covered in grass except For in the Center,where there is a circular fountain With a diámeter of 4 feet.what is the área of the grass porción of your yard ? Round your answer to the nearest hundredth . A.131.43. B.173.74ft2. C.211.43 ft.2. D.263.74 ft.2 please help me

Answers

A of the yard= L*l=16*14= 224 feet²

A of the fountain= πR²

d=2R
4=2R

R=4:2=2

A of the fountain= 2²π=4 *3,14= 12,56 feet²

A of the grass portion= 224-12,56= 211,43 feet²

answer d)211,43 feet²

What is a radius f a circle with diameter of
240mm