F(x)=-x^2-10x

Find f(-5)

Consider that lines b and c are parallel. what is the value of x? what is the measure of the smaller angle?

He mass of a single atom of carbon can be found by dividing the atomic mass (12.01 g) by 6.022 x 10^23. which is the mass of a single carbon atom, correctly written in scientific notation with the correct number of significant figures?

98 point question what is the record for most points in one