Answer:
second option
Step-by-step explanation:
Given
+ 6x² + 5 = 0
let u = x², then
u² + 6u + 5 = 0 ← in standard form
(u + 1)(u + 5) = 0 ← in factored form
Equate each factor to zero and solve for u
u + 1 = 0 ⇒ u = - 1
u + 5 = 0 ⇒ u = - 5
Change u back into terms of x, that is
x² = - 1 ( take the square root of both sides )
x = ± 
= ± i ( noting that = i ), and
x² = - 5 ( take the square root of both sides )
x = ± 
= ± 
= ± 
× = ± i
Solutions are x = ± i and x = ± i
9514 1404 393
Answer:
see attached
Step-by-step explanation:
A graphing calculator does this nicely.
Take 2.7 million<span> divided </span>by<span> the number of </span>minutes<span> in a </span>year<span>. 1 hour= 60 </span>minutes<span> 1 day= 24 hours So you take 24 hours × 60 minutes =1440 </span>minutes<span> 1 </span>year<span>= 365 per minute.</span>
Answer:
11
Step-by-step explanation:
1.80m + 0.6s = 12.00
[substitute the value of m into the equation]
1.80×(3) + 0.6s = 12
5.4 + 0.6s = 12
[make s the subject of the formula]
0.6s = 12 - 5.4
0.6s = 6.6
[divide both sides of the equation by 0.6]
0.6s / 0.6 = 6.6 / 0.6
s = 11
To prove that 11 is correct
[substitute the value of m and s into the equation]
1.80m + 0.6m = 12.00
1.80×(3) + 0.6×(11) = 12.00
5.4 + 6.6 = 12.00
12.00 = 12.00
The best and most correct answer among the choices provided by your question is the fourth choice.
<span>The rays extend infinitely and the angle is made by the rays which have a common endpoint.</span>
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