Add 1 to both sides:
In cases like this, we have to remember that a root is always positive, so we can square both sides only assuming that
Under this assumption, we square both sides and we have
The solutions to this equation are
But since we can only accept solutions greater than -1, we discard 
and accept 
.
In fact, we have
and
which is the only solution.
Answer:
1.048576e+46
Step-by-step explanation:
(5x5)x20x80 to the power of 10
(25x20)x80 to the power of 10
500x80 to the power of 10
40000 to the power of 10
the answer is 1.048576e+46
Answer:
1050
Step-by-step explanation:
There are 30 teachers.
1:35
Multiply each part of the ratio by 30.
1×30:35×30
30:1050
There are 1050 learners.
Answer:
Tanya is 20 years old
Step-by-step explanation:
Let the age of Vera = x years
The age of Linda is twice the age of Vera = 2x years
Tanya is four less than four times the age of Linda = 4(2x)-4 = 8x-4
Total age of Vera, Linda and Tanya is:
x+2x+8x-4
Combine the like terms:
11x-4
But now their total age is two more than nine times the age of Vera:
11x-4 = 9x+2
Solve the expression
Combine the like terms:
11x-9x=2+4
2x=6
Divide both the sides by 2
2x/2 = 6/2
x= 3
Thus the age of Vera is 3 years.
The age of Linda is 2x= 2*3 = 6 years
The age of Tanya is 8x-4 = 8*3 - 4 = 24-4 = 20years....
Just multiply the income by .15
1201.87 * .15 = 180.28
He paid $180.28
It could be a trick question though because he didnt have a lot of income so maybe he didn't pay any taxes.. I've heard that's a thing
