Answer:
3
Step-by-step explanation:
the answer is 0.921.
Apply the trig identity: cos (a + b) = cos a.cos b - sin a.sin b
<span><span>cos<span>(75)</span></span>=<span>cos<span>(30+45)</span></span>=<span>cos30</span>⋅<span>cos45</span>−<span>sin30</span>⋅<span>sin45</span><span>=
0.921
</span></span>
1/4 is 0.25 so it would be 3.25
Answer:
I don’t know
Step-by-step explanation:
Answer:
D
Step-by-step explanation:
To determine the roots equate the factors to zero, that is
(x + 2)(x² + 7x + 10) = 0
Equate each factor to zero and solve for x
x + 2 = 0 ⇒ x = - 2
x² + 7x + 10 = 0
(x + 2)(x + 5) = 0
x + 2 = 0 ⇒ x = - 2
x + 5 = 0 ⇒ x = - 5
roots are x = - 5 and x = - 2 with multiplicity 2