If we distribute the 3 outside the parentheses of 2y + 3, then we can get:
6y + 9
As this is only an expression, and you cannot factor aside from what was given, the only equivalent expression without knowing the value of y would be 6y + 9.
<em>Hope this helps :)</em>
4d = 24 would be the right equation. To double check you would divide both sides by 4 (the number of legs) to find the amount of dogs.
Applying the trig formula: sin a = cos (90 - a)
cos (2x + 8) = sin (x + 37) = cos (90 - x - 37) = cos (53 - x)
Property of the cosine function -->
(
2
x
+
8
)
=
±
(
53
−
x
)
a. 2x + 8 = 53 - x
3x = 45
x
=
15
∘
b. 2x + 8 = - 53 + x
x
=
−
61
∘
For general answers, add
k
360
∘
Check by calculator.
x = 15 --> sin (x + 37) = sin 52 = 0.788
cos (2x + 8) = cos (38) = 0.788. Proved
x = - 61 --> sin (x + 37) = sin (- 24) = - sin 24 = - 0.407
cos (2x + 8) = cos (-122 + 8) = cos (- 114) = - 0.407. Proved
Answer: 9 L - B
Step-by-step explanation:
Sum means "add" so you add 7.4 and 1.16. Then it asks for a less precise measurement (or apporaxmate) probably meaning after you've rounded up. That would be 9 L or B. Hope that helps!
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