Answer:
Step-by-step explanation:
Hi!
So, a radical is basically a fractional power.
Square roots are numbers to the 1/2.
For example, the square root of 4 is just , or 2.
So for cube root, the 1/2 changes to a 1/3.
This can then be rewritten as
or
Answer:
The bill will be $26070.
Step-by-step explanation:
Your base plan costs you $30 a month
And each text sent or received is only 12 cents or $0.12.
Let the messages sent be = x
So, cost for messages become =
Let total bill cost be = y
Now, total bill will comprise of monthly plan charges plus message charges.
So, equation forms:
Now, given is that In one month 217,000 messages were sent between two brothers in Philadelphia.
So, their approximate bill will be :
=>
=> y = 26070
Therefore, bill will be $26070.
Answer:
b =
Step-by-step explanation:
To clear the radicals square both sides
=
( cross- multiply )
(6 - a)(8 + b) = b - 7 ← expand factors on left using FOIL
48 + 6b - 8a - ab = b - 7 ( subtract 48 from both sides )
6b - 8a - ab = b - 55 ( add 8a to both sides )
6b - ab = b - 55 + 8a ( subtract b from both sides )
6b - ab - b = 8a - 55, that is
5b - ab = 8a - 55 ← factor out b from each term on the left side )
b(5 - a) = 8a - 55 ← divide both sides by (5 - a)
b =