Answer:
300+40+7
Step-by-step explanation:
<h2>
<u>PLEASE MARK BRAINLIEST!</u></h2>
Answer:
(2 · 10⁰) + (5 · 109)
= (2 · 0) + (5 · 109)
= 2 + (5 · 109)
= 2 + 545
= 547
Your answer is 547.
<em>I hope this helps!</em>
We have to solve this equation:

5 x = 15
x = 15 : 5
Answer:
x = 3
Answer:
1 + cosa sina
Step-by-step explanation:

cos³a - sin³a ← is a difference of cubes and factors in general as
a³ - b³ = (a - b)(a² + ab + b²) , then
cos³a - sin³a
= (cosa - sina )(cos²a + cosa sina + sin²a)
= (cosa - sina)(1 + cosa sina) [ sin²a + cos²a = 1 ]
Then

=
← cancel (cosa - sina) on numerator/ denominator
= 1 + cosa sina