If you multiply the top equation by -2 you get:
-4x -14y = 14 => -4x = 14+14y
now you can plug in the -4x into the second equation:
14+14y - 3y = -19 => 11y = -33 => y=-3
Fill in y=-3 in either equation to find x:
2x - 21 = -7 => 2x = 14 => x=7
So your ordered pair is (7,-3)
They are the same length. You need to find the common denominator (8) and multiply both the numerator and denominator on 3/4 to ger 6/8. Than, just draw a numberline comparing the lengths! Hope this helped
Answer:
-24 degrees
Step-by-step explanation:
To find the total change in temperature, multiply 12 by -2, since it dropped 2 degrees each hour for 12 hours.
12*(-2)
= -24
This means -24°F was the total number of degrees the temperature dropped.
For #1 it is 126* because it has the same angle as the bottom one does
