The final answer would be:
r+2
Exact steps are shown in the attached picture.
Answer:
Well if you put -4 where x is.. you still do get the answer of 20.
So that is correct.
Step-by-step explanation:
Answer:
The net change is -.30
Step-by-step explanation:
increase means add
decrease means subtract
+3.50
-3.70
+3.30
-3.40
-------------
-.30
The net change is -.30
<span><u><em>The correct answers are: </em></u>
B) have the same vertex
C) be congruent.
<u><em>Explanation</em></u><span><u><em>: </em></u>
Vertical angles are defined as opposite angles that <u>share only a vertex</u>. This definition is why B is true.
Since they are opposite angles, that means that the sides of one angle will be opposite the sides of the other; since this is true, the angles must be <u>congruent</u>.</span></span>
Answer:
i. 1.63 s
ii. The negative time cannot be used in this context
Step-by-step explanation:
i. Since h = −640t² and the rocket descends 1,690 m, h = -1,690 m (since there is a drop in height).
So, h = -640t²
t² = h/-640
t = √(- h/640)
Substituting h into the equation, we have
t = √(- h/640)
t = √[-(-1,690)/640]
t = √2.640625
t = 1.625
t ≈ 1.63 s
ii. So, the negative time cannot be used in this context because, the height drop is negative.
