When adding the square root of 9 and –7, which type of number is the sum?
A. irrational
B. whole number
C. radical
D. integer *****
ami correct?
none of the above
√9 + √-7 = 3 + √7 i
that is a complex number
I suspect a typo
ah. it occurs to me you meant √9 + -7 = -4
which is indeed an integer.
that's what it is on the test so im so confused now :(
thank you :)
Yes, you are correct! The sum of the square root of 9 and -7 is an integer. To arrive at this conclusion, let's break it down step by step:
The square root of 9 is 3 because 3 × 3 = 9.
The square root of -7 is not a real number because there is no real number that can be squared to give a negative result. Therefore, the square root of -7 is an imaginary number.
When we add the square root of 9 (which is 3) and the square root of -7 (which is an imaginary number), the result is an integer. An integer is a whole number that can be positive, negative, or zero. In this case, since we have 3 (positive) + the square root of -7 (imaginary), the sum is an integer.
So, the correct answer is D. integer.