Depreciation a new car worth 25,000 deprecates at a rate of 50% every 3years the value of the car after 6 years is 25,000 (0.5^2) which of the following key stroke sequences is better for finding the cause of the car? explain your reasoning

The answer is (b)

Step-by-step explanation:

To check this, we have to evaluate both options:

Using option a:

First we have to multiply 25000 and .5 because the in () has the highest priority :

=> 25000 * .5 = 12500

After that, we will square it:

=> (12500)^2 = 156,250,000 that is way more than the actual value.

So option (a) is wrong

Using option b:

First we would take square of .5 because of ():

=> (0.5)^2 = 0.25

After that, multiply it with 25,000

=> 25000* 0.25 = 6250

That is the required answer

2? if not the correct answer you might need to provide more information

step-by-step explanation:

starting with:    

5 + x - 12 = 2x - 7   

5 + x - 12 - x = 2x - 7 - x (subtract x from both sides)   

5 - 12 = x - 7 (combine and cancel x's from both sides)   

5 - 12 + 7 = x - 7 + 7 (add 7 to both sides)   

0 = x (add numbers together on both sides)       

so in order for the equation to be true, x must be 0.   

trying x = -0.5   

5 + x - 12 = 2x - 7 (original equation)   

5 + -0.5 - 12 = 2(-0.5) - 7 (plug in value of x)   

5 + -0.5 - 12 = -1 - 7 (did multiplication)   

-7.5 = -8 (did addition on both sides)       

since -7.5 is obviously not equal to -8, the value of -0.5 for x is wrong.   

trying x = 0   

5 + x - 12 = 2x - 7 (original equation)   

5 + 0 - 12 = 2(0) - 7 (plug in value of x)   

5 + 0 - 12 = 0 - 7 (did multiplication)   

-7 = -7 (did addition on both sides)       

since -7 equals -7, that demonstrates that the value of 0 for x is correct.   

trying x = 1   

5 + x - 12 = 2x - 7 (original equation)   

5 + 1 - 12 = 2(1) - 7 (plug in value of x)   

5 + 1 - 12 = 2 - 7 (did multiplication)   

-6 = -5 (did addition on both sides)       

since -6 is obviously not equal to -5, the value of 1 for x is wrong.