Hi! It’s me from your other post! Here’s my work for you! It’s been awhile since I’ve done this stuff so I’m really sorry if I get you a bad grade! I just wanted to help out:))
Answer:
1/3
Step-by-step explanation:
5 red marbles + 10 blue marbles = 15 total marbles
5 red marbles / 15 total marbles = 5/15
5/15 = 1/3
Right away, we know that
which means
Then
Let and . Then
from which we find
You can use the same ideas above to find the trig ratios for , starting from the given fact that .
2x² +8y = 121.5
<span>8y = 121.5 - 2x</span>²
and,
<span>x</span>²<span>-8y = 121.5 </span>
<span>-8y = 121.5 -x</span>²
<span>8y = x</span>²<span>-121.5 </span>
<span>Now, equate the two 8y's </span>
<span>121.5-2x</span>²<span> = x</span>²<span> -121.5 </span>
<span>-3x</span>²<span> = -121.5-121.5 </span>
<span>-3x</span>²<span> = -243 </span>
<span>3x</span>²<span> = 243 </span>
<span>x</span>²<span> = 81 </span>
<span>x = ±9</span>
1) Answer: A) -1
2) Answer: H) -101/53
3) Answer: G) -3/2