Question

Help me with this math assesment please 15 points!!!!!!!

Answer 1

Answer:

for part a i think it is the second one sorry if i do get it wrong and i couldnt answer the last one sorry

Step-by-step explanation:

Answer 2

Answer:

See below.

Step-by-step explanation:

Part A)

She needs to compare by division the following two numbers:

8 × 10^-6 and 4 × 10^-5

If she divides the whole parts and then divides the powers of ten, she must do both divisions in the same order.

That means either

a) divide 8 by 4, and then divide 10^-6 by 10^-5

or

b) divide 4 by 8, and then divide 10^-5 by 10^-6

Doing a), you get

8/4 = 2

10^-6 / 10^-5 = 0.1

Multiply the parts: 2 × 0.1 = 0.2

Doing b), you get

4/8 = 0.5

10^-5 / 10^-6 = 10

Multiply the parts: 0.5 × 10 = 5

Conclusion:

The smaller number, 8 × 10^-6, is 0.2 of the larger number, 4 × 10^-5,

or, stated differently,

the larger number, 4 × 10^-5, is 5 times the smaller number, 8 × 10^-6

Let's see what she did.

She divided 8 by 4.

Then she divided 10^-5 by 10^-6. This is a mistake because she reversed the order of the powers of 10 before dividing.

Let's look at the choices:

Choice d) is correct because it has both divisions in the same order and comes to the correct conclusion that the larger number is 5 times greater than the smaller number.

Answer: d)

Part B)

8 × 10^-6 = 0.000008

4 × 10^-5 = 0.00004

Larger number: 4 × 10^-5