Answer:
720
Step-by-step explanation:
nPk = n!/(n-k)!
10P3 = 10!/(10-3)! = 10!/7!
= 10·9·8 = 720
A+a+3=a+13
2a+3=a+13
From here you want the variables on the same side, so you would subtract the a from a+13 and move it to 2a+3
2a+3=a+13
-a -a
a+3=13
Now you want the numbers on the same side
a+3=13
-3 -3
a=10
Answer:
It is irrational and equal to 5 times the square root of 2.
Step-by-step explanation:
The statement that is true about the expression:
( √(32) ) + √2
( √(16 * 2) ) + √2
( √(4²) *√2 ) + √2
( 4 *√2 ) + √2
( √2+√2+√2+√2 ) + √2
...and this is ( 4 ) + 1 times √2
The answer is 5 times √2
So the expression is irrational and equal to 5 times the square root of 2.
