Answer: a) parallelogram
Step-by-step explanation:
Top side and bottom side are same lengths/parallel
Angles in a quadrilateral add up to 360 degrees
105+75*2=360
Let's simplify step-by-step.
<span>52−<span>8<span>(<span>n−1</span>)
</span></span></span>Distribute:
<span>=<span><span>52+<span><span>(<span>−8</span>)</span><span>(n)</span></span></span>+<span><span>(<span>−8</span>)</span><span>(<span>−1</span>)
</span></span></span></span><span>=<span><span><span>52+</span>−<span>8n</span></span>+8
</span></span>Combine Like Terms:
<span>=<span><span>52+<span>−<span>8n</span></span></span>+8
</span></span><span>=<span><span>(<span>−<span>8n</span></span>)</span>+<span>(<span>52+8</span>)
</span></span></span><span>=<span><span>−<span>8n</span></span>+60
</span></span>Answer:
<span>=<span><span>−<span>8n</span></span>+<span>60</span></span></span>
Answer:
t=0
Step-by-step explanation:
r=<
+1,
>
by differentiating the r vector component by component
r' = <2at, 1>
Two vector are orthogonal when the dot product between them is zero, so:
r'·r=0
<+1,>·<2at, 1>=2
+2at+t=0
common factor
t(
+2a+1)=0
Then, the only real value for t is zero.
-> t=0
The answer is 45km because times 10 and 4.5 which gets 45
Answer: 10000-1500=8500 Its simple math really.
