The mass of a an atom of helium is 6.65 x 10^-24. Use scientific notation to express the mass of 250 helium atoms.

A) 1.6625 x 10-21

B) 1.6625 x 10-22

C) 1.6625 x 10-24

D) 1.6625 x 10-26

Which equation is related to this equation c - 21 = 47 A. c = 47 - 21 B. c = 47/21 C. c = 47 + 21 D. c = 47.21

What value of z makes the equation true? 2/5=z/15 A. 6 B. 10 C. 3 D. 15

Which is 8.43 written in expanded form

Sam bought shoes for $36.94 and x pairs of socks for $1.92 each. Which expression shows the total money spent? 36.94x + 1.92 36.94x + 1.92x 36.94 + 1.92x 36.94 + 1.92 + x

21. Given that a line y = x passes through the origin and up to the right, what would the line y = mx look like if m = 1/2? a. passes through the origin and up to right b. passes through the origin and up to the left c.

Two consecutive even integers of - 102

A circle has a radius of 3. An Arc in this circle has a central angle of 20 degrees. What is the length of the arc?

One base of a triangular prism has two sides that are 15 inches wide and 10 inches long what is the possible length for the third side of the base

What is 3 to the 4th power

What is the converse of: "If it is snowing, then the temperature is below 32oF."