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Wittaler [7]
3 years ago
12

When I square my number, I get the same answer as when I multiply my number by 10 and then add 144. My number is positive. What

is it?
Mathematics
1 answer:
exis [7]3 years ago
8 0

Answer:

your number is 18

Step-by-step explanation:

x^2 = (x × 10 ) + 144

x^2 = 10x + 144

x^2 - 10x - 144 = 0

using quadratic method

your answer should be

(x- 18) ( x+8 )

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F(x)=8_-4x-x^3. g(x)=x^2+7x-9. Find f(x)+g(x)
11111nata11111 [884]

(8 - 4x -  {x}^{3} ) + ( {x}^{2}  + 7x - 9) \\  =  -  {x}^{3}  +  {x}^{2}  - 4x + 7x + 8 - 9 \\  =  -  {x}^{3}  +  {x}^{2}  + 3x - 1
(8x - 4x -  {x}^{3} ) + ( {x}^{2}  + 7x - 9) \\  -  {x}^{3}  +  {x}^{2}  + 8x - 4x + 7x - 9 \\  -  {x}^{3}  +  {x}^{2}  + 11x - 9
The answer is either B, and you forgot to put in the ^2 in the answer choice, or C, and you forgot to put an x where there is a _ in the question.

Check the actual question (the one you recieved, not the one posted here) and see where the mistakes are. If f(x) = 8x - 4x - x^3, then your answer is C. However, if B is actually -x^3 + x^2 + 3x - 1, then the answer is B.
7 0
4 years ago
Is this right? I chose 15.
daser333 [38]

Answer:

Correct, it is 15

Step-by-step explanation:

Because 3 turns into 9, you also want to multiply the other by 3, so you’d do 5x3 to get 15

7 0
3 years ago
Read 2 more answers
GETS BRAINILIST!!!!!!!The table shows the relationship of how many pounds of cherries are needed to make a certain number of pie
dexar [7]

Answer:

Graph 3

Step-by-step explanation:

EXAMPLE    6=60

                    4= 40

SINCE THERE IS NO NORMAL NUMBERS AND THERE ARE 10 , 20 ,30 ETC..

THE NORMAL NUMBERS TURN INTO 10 20 AND SO ON..

HOPE IT HELPS

8 0
3 years ago
What is the domain of the function continous or discrete
scoray [572]
The domain of the function is discrete 

6 0
3 years ago
Find the average for each group. Round to nearest tenth.<br><br> 6.8, 5.6, 3.4, 2.5, and 4.7.
mash [69]

Answer:

4.6

Step-by-step explanation:

Hello!

To find the average we add all the numbers together and divide by how many numbers we added

6.8 + 5.6 + 3.4 + 2.5 + 4.7 = 23

We added 5 numbers so divide the total by 5

23/5 = 4.6

The answer is 4.6

Hope this helps!

3 0
3 years ago
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