The width of a red blood cell is approximately 8 micrometers, which is 8 x 10-6 meter. give your answers to the questions below in scientific notation. be sure to answer both a and b, and explain your answer to b.

a. what would be the width of 7.2 x 105 red blood cells in meters?

b. if a grain of salt is .5mm wide, how many red blood cells could fit across one grain of salt? explain your answer. (hint: 1mm = 1 x 10-3 m.)

A)  

B)  62

Step-by-step explanation:

The width of a red blood cell is approximately 8 micrometers meters

Part A)

Width of 1 red blood cell meters

width of red blood cells meters

Now change into scientific notation. So, decimal should be between 1 to 10

Decimal move 1 digit right to left

Hence, the width of red blood cells is

Part B)

If a grain of salt is 0.5 mm wide.

First convert mm to m. ( 1 mm = 1 × 10⁻³ m)

Therefore, 0.5 mm = 5 × 10⁻⁴ m

Size of a grain = 5 × 10⁻⁴ m

Size of a blood cell = 8 × 10⁻⁶ m

Hence, 62 number of red blood cells fit in a grain of salt.

by definition, an arc subtended by a central angle of some given measure has the same measure. so .

the answer is y < -3 or   y > 3

-3y > 7 + 2

-3 y > 9

y < -3