We are asked that, which shape has four congruent sides and two sets of parallel side.
From the options, the answer is Rhombus.
(a-b) X (a+b)
= aXa - bXa +aXb -bXb (distributing)
Now, cross product of a vector with itself = 0
so, aXa = 0, bXb = 0
Also, aXb = - bXa
so,
(a-b) X (a+b) = 0 + aXb + aXb + 0
= 2aXb
hence, proved :)
Answer:
-66
Step-by-step explanation:
- 13, ____, -119
first, find the common difference:
-13 - (-119) = 106
next, divide 106 by 2: 
= 53
so, the common difference is 53.
now, subtract 53 from -13:
-13 - 53 = -66
Answer:
16.25$
Step-by-step explanation:
4.25 times 3 = 12.75
vase- 3.50
12.75 + 3.50 = 16.25$
with 3.25$ left.
The answer is: a = 16
Steps:
First exclude any restricted values of y.
6/y = 9/24 , y is not equal 0
Simplify the right side of the equation using 3.
6y = 3/8
Cross multiply.
6 x 8 = 3
3 x y = 3y
So, 6 x 8 = 3y
Or, 48 = 3y
Switch the sides of the equation.
3y = 48
Divide both sides by 3.
3y/3 = y
48/3 = 16
Now you have your answer, y = 16
