The equation x2 – 1x – 90 = 0 has solutions {a, b}. what is a + b?

The value of a+b is 1.

Step-by-step explanation:

The given equation is

It is given that this equation has two solutions {a,b}.

First of all find the factors of given equation. The middle term can be written as -10x+9x.

Taking out common from each parenthesis.

Using zero product property, we get

The value of a is 10 and b is -9. The sum of both the solutions is

Therefore the value of a+b is 1.

0.0076, if you meant 4.125 divided by 0.03125 it would be 132

step-by-step explanation:

first you have to move the decimal in 0.03125 over until its behind the 5 which is 5 places over. now the number is 3125

then you have to move the decimal in 4.125, 5 places over. now the number is 4,112,500.

now you divide like you would normally would and get 0.0076