Answer:
guess hes just smart
Step-by-step explanation:
Answer:
she can buy 5 packs of cookies
Step-by-step explanation:
17.50/3.50=5
hope this helped ;D
Express the matrix
like
, where
if
and
if
. (
is known as kronecker's delta)
In the same form we express the matrix
.
The firs index indicate the row and the second the column.
By the multiplication of matrices we have
, where
![c_{ij}=\sum_{k=1}^n a_{ik}\delta _{kj} = a_{ij}](https://tex.z-dn.net/?f=c_%7Bij%7D%3D%5Csum_%7Bk%3D1%7D%5En%20a_%7Bik%7D%5Cdelta%20_%7Bkj%7D%20%3D%20a_%7Bij%7D)
because only
is non-zero in the last sum.
therfore we have
.
In the same manner we have
, where
![d_{ij}=\sum_{k=1}^n \delta _{ik}a_{kj} = a_{ij}](https://tex.z-dn.net/?f=d_%7Bij%7D%3D%5Csum_%7Bk%3D1%7D%5En%20%5Cdelta%20_%7Bik%7Da_%7Bkj%7D%20%3D%20a_%7Bij%7D)
And so, ![IA=A](https://tex.z-dn.net/?f=IA%3DA)
Answer:
x = 11/3
Step-by-step explanation:
x - 2/3 = 3
³⁾x = ³⁾3 + 2/3
3x = 9 + 2
3x = 11
x = 11/3
Answer:
![2x^{2}](https://tex.z-dn.net/?f=2x%5E%7B2%7D)
Step-by-step explanation:
Find the GCF of the numbers 48, 6 and 26.
The largest number each can be divided by is 2, which is the GCF.
Find the GCF of ![x^{2}, x^{3}, x^{6}](https://tex.z-dn.net/?f=x%5E%7B2%7D%2C%20x%5E%7B3%7D%2C%20x%5E%7B6%7D)
The GCF is always the smallest exponent, so
is the GCF
Combine the two GCF for the answer
![2x^{2}](https://tex.z-dn.net/?f=2x%5E%7B2%7D)