Question

Can someone help ?

Answer 1

Is the number written in scientific notation? If not, explain.
4.8x100^7
a. No; it is not written as a number times a power of 10.
b. yes; the number is written in scientific notation
c. no; the first factor is not a number between 1 and 10

For questions 2-3, what is each number when written in scientific notation?
2. 1,220,000,000
a. 1.22x10
b. 0.122x10^10
c. 12.2x100^8
d. 1.22x10^9

3. 0.0287
a. 0.287x10^-1
b. 2.87x10^-2
c. 2.87x10
d. 28.7x100^-3

4. what is the number written in standard notation?
5x10^3

a. 500
b. 5,000
c. 50^3
d. 150

5. Suppose that volumes of four stars in the milky way are 2.7 x 10^18 km^3, 6.9 x 10^12 km^3, 2.2 x 10^12 km^3, and 4.9 x 10^21 km^3. What is the order of the stars from least to greatest volume?

a. 2.7 x 10^18, 6.9 x 10^12, 4.9 x 10^21, 2.2 x 10^12
b. 2.2 x 10^12, 6.9 x 10^12, 2.7 x 10^18, 4.9 x 10^21
c. 2.7 x 10^18, 6.9 x 10^12, 2.2 x 10^12, 4.9 x 10^21
d. 2.2 x 10^12, 4.9 x 10^21, 2.7 x 10^18, 6.9 x 10^12

Answer 2

My answers
1.)a
2.)d
3.)b
4.)b

Answer 3

Those are correct :)

Answer 4

Do you know the last one by chance

Answer 5

Hint: A larger number has a higher 'power of 10' in it

Answer 6

Ok thank you :)

Answer 7

You are welcome :)

Answer 8

So it would be b ?

Answer 9

Yup!

Answer 10

Thank you !

Answer 11

Yw