What is (+19) ÷ (-79)+(-63)×(+97)÷(-986)pls .
an explanation would be appreciated

Iq scores for adults age 20 to 34 years are normally distributed according to n(120, 20). in what range does the middle 68% of people in this group score on the test?

Which is f(5) for the function –2x2 + 2x - 3?

What is the value of the expression i 0 × i 1 × i 2 × i 3 × i 4? 1 –1 i –i