Answer:
6 hours
Step-by-step explanation:
both will equal $31 at 6 hours
1) 1000 / 100 ⇒ 10 / 1 = 10
1000 ÷ 100 = 10
100 ÷ 100 = 1
2) 9/81 ⇒ 1/9
9 ÷ 9 = 1
81 ÷ 9 = 9
3) 4/64 ⇒ 1/16
4 ÷ 4 = 1
64 ÷ 4 = 16
Answer:
Tienes 30 años, ya que cuando tendras el doble de la edad de 10 años, o sea 20 años y dentro de 10 años da igual a 30 años.
Espero que ayude
The first thing you need to do is say that <span>x = 3sec(u) ==> dx = 3sec(u)tan(u) du
If we say this we can proceed in this manner
</span>∫ 1/[x^2√(x^2 - 9)] dx
<span>= ∫ 3sec(u)tan(u)/{9sec^2(u)√[9sec^2(u) - 9]} du, by applying substitutions </span>
<span>= ∫ 3sec(u)tan(u)/{27sec^2(u)tan(u)] du, since tan^2(u) = sec^2(u) - 1 </span>
<span>= 1/9 ∫ 1/sec(u) du, by canceling sec(u)tan(u) du </span>
<span>= 1/9 ∫ cos(u) du, since 1/sec(u) = cos(u) </span>
<span>= (1/9)sin(u) + C. </span>
<span>With x = 3sec(u) ==> sec(u) = x/3 and cos(u) = 3/x, we have: </span>
<span>sin(u) = √[1 - cos^2(u)] = √[1 - (3/x)^2] = √(x^2 - 9)/x. </span>
<span>Therefore, back-substituting yields: </span>
<span>∫ 1/[x^2√(x^2 - 9)] dx = (1/9)sin(u) + C </span>
<span>= (1/9)[√(x^2 - 9)/x] + C </span>
<span>= √(x^2 - 9)/(9x) + C.
</span>The answer will be: <span>sqrt(x^9-9)/9x
I hope this helps a lot </span>
Answer:
52
Step-by-step explanation:
-22-10(-7)
-22--70
-22+70
52
