D- $48.50
you have to subtract the largest and the smallest number to find the range
The correct answer for this would be the second option. The equation that is used in the process in completing the square is this: <span>(x - 4)2 = 13.
The solution is this:
(x-4)(x-4) = 13
x^2 - 4x - 4x + 16 = 13
x^2 - 8x +16 = 13
x^2 - 8x = 13 -16
x^2 - 8x = -3
x^2 - 8x + 3 = 0
Hope this answers your question. Have a great day!</span>
Answer:
a) 1.59967 * 10 ^-12
b) 7.52711497
c) 1.590778098 * 10^-1
Step-by-step explanation:
a= 3.47 x 10^-6,
b=4.61 x 10^-7,
c=5.52 x 10^-7
a) a*b = 3.47 x 10^-6* 4.61 x 10^-7
We multiply the numbers out front and add the exponents
(3.47*4.61) * 10^(-6+-7)
15.9967 * 10^-13
But this is not correct scientific notation, we need 1 number in front of the decimal. Move the decimal 1 place to the left and add 1 to the exponent
1.59967 * 10^(-13+1)
1.59967 * 10 ^-12
b) a/b = 3.47 x 10^-6/ 4.61 x 10^-7
We divide the numbers out front and subtract the exponents
(3.47/4.61) * 10^(-6- -7)
(3.47/4.61) * 10^(-6+7)
.752711497* 10^1
But this is not correct scientific notation, we need 1 number in front of the decimal. Move the decimal 1 place to the right and subtract 1 from the exponent
7.52711497* 10^1-1
7.52711497
c) c/a = 5.52 x 10^-7/3.47 x 10^-6
We divide the numbers out front and subtract the exponents
(5.52/3.47) * 10^(-7- -6)
(5.52/3.47) * 10^(-7+6)
1.590778098 * 10^-1
Can't solve this, because it's not an equation. It's an expression, and I think your goal is to simplify it.
<span>r^2/2r^3 would be better written as
</span><span> r^2 r^2
------- = ----------- this should be reduced by cancelling "r^2:"
2r^3 2r(r^2)
1
-------- (answer)
2r</span>
