simplify2A by 7 the whole raised to 4 × 7 by 8a the whole raise to 3 × 4a by 3 the whole raise to 2

step-by-step explanation:

i hate black

the equation cos(35) =a/25 can be used to find the length of bc what is the length of bc? round to the nearest tenth

step-by-step explanation:

or

step-by-step explanation:

we need to solve for 'x' the following equation:  

we have that:

⇒

⇒ ⇒

factorizing, we get that:

  ⇒

then, the solutions are: or

nothing extraneous has been found!