I'll solve it algebraically
x+y=4
x-3y=12
multiply first equatoin by -1 and add to second
-x-y=-4
<u>x-3y=12 +</u>
0x-4y=8
-4y=8
divide both sides by -4
y=-2
sub back
x+y=4
x+-2=4
add 2 to both sides
x=6
x=6
y=-2
(6,-2)
Answer:
49 square miles
Step-by-step explanation:
Sorry on the last question :(
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Have a good day :)
This is basic Pythagoras. Remember A squared + B squared = C squared?
reverse it and u get c squared - a squared = b squared.
Apply to ur equation. 14.7 squared - 11.9 squared = 216.09 - 141.61 = 74.48 squared. find the square root, 8.630179604156567, and round it to the nearest 10th. That will equal 8.6
Hope it helps!
Puffin.
Answer:
with?
Step-by-step explanation: