Amanda is adding the numbers below. 3.7 x 10^20 + 4.45x10^20 what is the sum written in scientific notation?

 8.15 x 10²⁰

Step-by-step explanation:

In order to add or subtract, they must both have the same power - think of the power as "like terms".  In this problem they already have the same power (10²⁰) so we don't need to manipulate them to have the same power.  We can just add their coefficients (3.7 and 4.45).

  3.7   x 10²⁰

+  4.45 x 10²⁰

   8.15 x 10²⁰

what is the approximate angle of acb if abc is 25cm and the length of segment bc is 15

step-by-step explanation:

so then what are you asking?

step-by-step explanation: