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Free_Kalibri [48]
3 years ago
14

PLS HELP!!!!!!!!!!!!!

Mathematics
1 answer:
stepladder [879]3 years ago
6 0
First, multiply the top equation by 2 and bottom by -3.
60x+60y=900
-60x-75y=-1035
————————
-15y=-135
—————-
-15=-15
y=9

So the answer should be 9.
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6 0
2 years ago
3 n-5 An even ineger, what is the next larger consecutive even integer
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8 0
2 years ago
What is 18.386 rounded to the nearest Hundred
jonny [76]
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8 0
3 years ago
Find sin x/2, cos x/2, and tan x/2 from the given information.. cos x = −15/17, 180° &lt; x &lt; 270°. . sin x/2=. . cos x/2=. .
sukhopar [10]
So base on your question the possible answer to that kind of question and the solution are the following and i hope you will understand the formula and free to ask some questions if needed.

<span>2<span>cos2</span><span>x2</span>=1+cosx=1−<span>1517</span>=<span>217</span>,<span>cos2</span><span>x2</span>=<span>117</span></span> <span>cos<span>x2</span>=−<span>1<span>17<span>−−</span>√</span></span>....(1)</span> <span>sin<span>x2</span>=<span>1<span>17<span>−−</span>√</span></span>,90<<span>x2</span><135</span> <span>sin<span>x2</span>>0,cos<span>x2</span><0,tan<span>x2</span><0</span> <span>2<span>sin2</span><span>x2</span>=1−cosx=1−<span><span>−15</span>17</span>=<span>3217</span>,sin<span>x2</span>=<span>4<span>17<span>−−</span>√</span></span>.....(2)</span><span> divide (2) by (1) and get the value of tan x/2</span>
6 0
3 years ago
Read 2 more answers
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