MATHEMATICS HIGH SCHOOL

Twice a certain number is 44. What is the number?
equation:
n=

Answers

Answer 1
Answer: 2n = 44
n = 22 (Divide by 2)

Hope I helped.
Answer 2
Answer: equation: n = 2n = 44
To work this out, do the opposite of multiplication on both sides of the equation.
This means: 
2n/2 = 44/2

^ a rule is, what you do to one side, you must do to the other. 

This leaves you with n = 22. 

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Which equation is true for x = –6 and x = 2?2x2 – 16x + 12 = 0
2x2 + 8x – 24 = 0
3x2 – 4x – 12 = 0
3x2 + 12x + 36 = 0

Answers

we know that

using a graph tool

let's proceed to graph each case to determine the roots

case 1)2x^(2) - 16x + 12 = 0

the roots are

x1=0.8\ x2=7.2 ------> is not the solution

see the attached figure N 1

case 2) 2x^(2) +8x -24 = 0

the roots are

x1=-6\ x2=2

see the attached figure N 2 --------> is the solution

case 3) 3x^(2) - 4x - 12 = 0

the roots are

x1=-1.4\ x2=2.8------> is not the solution

see the attached figure N 3

case 4) 3x^(2) +12x +36 = 0

the graph does not have x-intercepts

see the attached figure N 4 ------> is not the solution

therefore

the answer is

the solution is

2x^(2) +8x -24 = 0
Second statement 2x2 + 8x – 24 = 0 Is true for the given conditions. When x = -6 2x2 + 8x – 24 = 0 Becomes 2(-6)2 + 8(-6) – 24 = 0 2(36) - 48 - 24 = 0 72 - 48 - 24 = 0 0 = 0 Which is true. When x = 2 2x2 + 8x – 24 = 0 Becomes 2(2)2 + 8(2) – 24 = 0 2(4) + 16 - 24 = 0 8 + 16 - 24 = 0 0 = 0 Which is true. So 2x2 + 8x – 24 = 0 will be answer.

What is the inverse operation of division?

Answers

the inverse operation of division is multiplication 

What is the GCF of 12x and 44xy

Answers

12x=4x\cdot3\n\n44xy=4x\cdot11y\n\nGCF(12x;\ 44xy)=4x
If we don't know what 'x' and 'y' are, the best we can say is that the GCF is 4x .
But 'x' and 'y' can easily take on values that would change the GCF.

The vertices of ∆ABC are A(-2, 2), B(6, 2), and C(0, 8). The perimeter of ∆ABC is 14.8099
units, and its area is
square units.

Answers

Perimeter= 22.81

Area= 24

GO PLATO USERS
the perimeter is 22.81 you can use GeoGebra to do this easily.

What are the solutions of the equation below
(x-2)(x+9)=0

Answers

Answer: {2, -9}

Step-by-step explanation: Think of these two binomials, x -2 and x + 9,

as two numbers that are multiplying together to equal zero.

In order for two numbers to multiply together to equal zero,

either one number or the other number must equal zero.

So for two binomials to multiply together to equal zero,

either one binomial or the other binomial must equal zero.

So we can split this problem up into two parts.

If (x - 2)(x + 9) = 0, then either x - 2 = 0 or x + 9 = 0.

On the left, add 2 to both sides and we have x = 2.

On the right, subtract 9 from both sides and we have x = -9.

For our final answer we use set notation.

So our answer is {2, -9}.

Answer:

2 and -9

Step-by-step explanation:

x-2=0

x=2

x+9=0

x=-9

Christopher has breakfeast at a cafe and his cost of his meal is 36.00 dollars becssue of the service he wants to leave a 19% tip What. Is his total billl including tip?

Answers

Answer:

$42.84

Step-by-step explanation:

There are two ways to do this.

One

19% of 36 = 19/100 * 36 = $6.84

Total 36 + 6.84  = $42.84

Two

The second method involves knowing that his total is going to wind up being 119% of the bill. That's 100% + 19%

So the equation look like this

(119/100) * 36

or

(119 * 36) / 100 = 4284 / 100 = $42.84

Note

Both methods give you the same answer.
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