A speck of dust in an electron microscope is 1.2 * 102 millimeters wide. The image is 5 * 102 times larger than the actual size. How many millimeters wide is the actual speck of dust?

6.0×10⁴mm

Step-by-step explanation:

A speck of dust in an electron microscope is 1.2 * 102 millimeters wide.The image is 5 * 102 times larger than the actual size. How many millimeters wide is the actual speck of dust?

Given

Length of microscope = 1.2×10²mm

If the image is 5×10² larger

Width of the image = 5×10²(1.2×10²)

Width of the image = 5×1.2(10⁴)

Width of the image = 6.0×10⁴mm

11

step-by-step explanation:

32.50-7.50=25

225/25=11