Answer: 2.09
Step-by-step explanation:
Answer:
The correct answer is d.
Step-by-step explanation:
Let's solve each answer and see which one matches.
Note that in each case, you simply add or subtract from x inside the radical to move left or right respectively. Similarly, just add or subtract to the full expression to move up or down respectively. Doing so we get:
a)
b)
c)
d)
So d is the correct answer.
Answer:
x= -1.5
Step-by-step explanation:
Use the distributive property
Perimeter: 2w+2l
We know the width and the perimeter, which is 18 and 76, so let's plug it in.
76=2(18)+2l
76=36+2l isolate the variable x!
40=2l
20=l
every length is 20 inches.
the inverse of a two-by-two matrix
A=
whose inverse is
Substituting values, we get
which is not the same as matrix B. Therefore B is not the inverse of A.
We can prove similarly that A is not the inverse of B.