Question

Write the expression using scientific notation
-
(2.5 * 10^4) (4 * 10^3)

A. 10 * 10^7
B. 10 * 10^8
C. 1 * 10^8
D. 10 * 10^12

Answer 1

what is 2.5*4=?

Answer 2

10

Answer 3

yup good:)
\[a^b*a^c=a^{b+c}\]
nw
\[10^4*10^3=?\]

Answer 4

Hmm.. I wasn't sure if I added the exponents, or multiplied them... so in that case it'd be 10 * 10^7

Answer 5

only adding them gives u 7.
so
\[10^4*10^3=10^7\]
\[10=1*10^1\]
\[10^1*10^7=?\]

Answer 6

usually numbers written in scientific notation will be in the form
2*10^5
2.6^10^7