Answer:
Step-by-step explanation:
To find the value of x, Cramer's rule says you replace the x-coefficients with the equation constants to form the matrix whose determinant is the numerator of the fraction. The denominator is the determinant of the matrix of coefficients. The equation constants are 148 and 246, so you expect to find those in the first column of the numerator (answer choices A and C).
The calculation is carried out correctly only in answer choice A.
Answer:
700
Step-by-step explanation:
I'm assuming you mean 
, not 
, like your prompt suggests.
First, let's figure out what rule we can use. A likely noticeable one is the Power Rule, which says the following:
![\dfrac{d}{dx} [u^a] = a(u)^{a-1} du](https://tex.z-dn.net/?f=%5Cdfrac%7Bd%7D%7Bdx%7D%20%5Bu%5Ea%5D%20%3D%20a%28u%29%5E%7Ba-1%7D%20du)
Applying this, we can solve for the derivative:
While you can simplify the expression to your liking, I believe that this form is not overly complex and will thus leave it as is.
Thus, our answer is:
Using the Pythagoras theorem
8^2 = 5^2 + x^2 where x = 1/2 length of the base
x^2 = 64-25 = 39
x = = sqrt39 = 6.24
so base length = 2*6.24 = 12.5 cm to nearest tenth
Answer:
(x+6)*3
Step-by-step explanation:
You will need to do this equation simply; and in order for that matter.
So you need to use the brackets so you know what comes first.
Remember BIDMAS or BODMAS
BIDMAS: BODMAS:
Brackets Brackets
Indices Order --- (These mean the same thing)
Divide Divide
Multiply Multiply
Addition Addition
Subtraction Subtraction
As you can see the brackets come first, so you do what is INSIDE the brackets before anything. (x+6)
To finish, you will need to multiply, but as it is an unknown, you don't know what to multiply the 3 by.
<u>So x, add 6, then times by 3 = (x+6) *3</u>
