A negative exponent just means that the base is on the wrong side of the fraction line, so you need to flip the base to the other side. For instance, "x^-2" just means "x2, but underneath, as in 1/x^2.
-4^-2 means the power -2 is only applied to 4 and not the negative sign. -4^-2 = -(4^-2), which is equal to -1/16.
Whereas, (-4)^-2 means the power -2 affects on both negative sign and 4. For example, (-4)^2 is equal to (-4 * -4) which is just 16. Moving on, with (-4)^-2 equals to 1/(-4*-4) = 1/16.
//Hope this helps.
Answer:
The answer is infinitely many.
Step-by-step explanation:
6x+1=2(3x-2)+5
6x+1=6x-4+5
6x+1=6x+1
6x=6x+0
6x=6x
The result is the same. Therefore, every number is an answer.
805 x 10
anything multiplied by ten adds a 0 before the decimal place or moves the number from past the decimal place forward--
answer is 8050
if you had 2400.23 x 10 you would move the two into the ones place
24002.3
Answer:
Step-by-step explanation:
To create an augmented matrix, we need to transfer the coefficients of each system of equations into its respective place in the matrix. The first row will be the coefficients of the first equation and so on. The number to the right of the equals sign is the last column of the augmented matrix.
![\left[\begin{array}{ccc|c}1&-1&8&8\\3&-9&1&-1\\8&1&0&0\end{array}\right]](https://tex.z-dn.net/?f=%5Cleft%5B%5Cbegin%7Barray%7D%7Bccc%7Cc%7D1%26-1%268%268%5C%5C3%26-9%261%26-1%5C%5C8%261%260%260%5Cend%7Barray%7D%5Cright%5D)
Answer:
21 miles
Step-by-step explanation:
he runs 4.2 miles x 5 days
