2) 8^2+6^2=c^2
64+36=c^2
100=c^2
square root 100
c=10ft
3) 7^2+a^2=16^2
49+a^2=256
subtract 49 from 256
a^2=207
square root 207
a=14.39 inches
Answer:
1
Step-by-step explanation:
First you collect like terms then you divide by the coefficient of x which is 2. It results to 1
100%/x%=95/38
(100/x)*x=(95/38)*x - we multiply both sides of the equation by x
100=2.5*x - we divide both sides of the equation by (2.5) to get x
100/2.5=x
40=x
x=40
now we have:
<span>38 is 40% of 95</span>
(a) is false. Consider the identity matrix, . Then
bu
(b) is false. Since is invertible, we have
but in general, matrix multiplication is non-commutative.
(c) is true. Let ; then
and so on, down to
which is to say .
(d) is false. Consider , so that
which is singular (i.e. determinant is zero), and thus not invertible.
(e) is true. It follows from the distributivity of matrix multiplication:
(f) is false for the same reason as (b). Expanding the product gives
but in general, .