For what value of a will 8×10^3 be 40 times larger than a×10^2 ?(1 point)

Answer 1

To find the value of a, we can set up the equation:

8 × 10^3 = 40(a × 10^2)

To simplify this equation, we can divide both sides by 40:

(8 × 10^3) / 40 = a × 10^2

Simplifying the left side of the equation:

(200 × 10^1) / 40 = a × 10^2

200 × 10^1 = 40a × 10^2

2000 = 40a × 100

Dividing both sides by 100:

2000 / 100 = 40a

20 = 40a

Dividing both sides by 40:

20/40 = a

0.5 = a

Therefore, the value of a is 0.5.

Answer 2

One second is approximately 0.0000115741 of a day. What is this number in scientific notation?(1 point)

Answer 3

The number 0.0000115741 in scientific notation is represented as 1.15741 × 10^-5.

Answer 4

The temperature of the sun at its center is about 2.7×10^7 degrees Fahrenheit. What is this temperature written in decimal notation?(1 point)