Sum of two angles that are complementary = 90°
<em>m</em>∠1 + <em>m</em>∠2 = 90°
Given :
<em>m</em>∠1 = 12°
Then :-
<h2>∴ <em>m</em>∠2 = 78°</h2>
Answer:
30x
Step-by-step explanation:
Answer:
Solution is (35,52)
Step-by-step explanation:
Step 1: Rewrite x+y=87
y= -x+87
Step 2: Substitute y=-x+87 into original equation and solve for x.
x=35
Step 3: Substitute value of x (35) and solve for y.
y=52
Answer:
You can use substitution, elimination, or graphing.
Step-by-step explanation:
So what I would do, is using elimination because you have two variables that are the same, what I mean is that you have two -3y's, So, take one equation, lets do the top one, and multiple the whole thing, yes, the WHOLE THING meaning both sides by -1. This will give you -6x+3y= -12. The negative turns to positive because you multiply the -3y by -1. Notice how you have a +3y in the top equation now and a -3y in the bottom one. This is why the method is called elimination, you can cross out the +3y and -3y and combine both equations. You now have -2x=12. Divide both sides by -2, x=-6. Plug -6 in the first equation, you get 6(-6)-3y=12 which goes to -36-3y=12. Add 36 on both sides, you get -3y=48. Divide both sides by -3, you get y=-16. Oh yeh, plug y into one of the equations and solve for x, i forgot to say that.
