Answer:
x = -9/2
Step-by-step explanation:
Substitute y = -6 in the second equation.
y = 4x + 12
-6 = 4x + 12
Subtract 12 from both sides.
-18 = 4x
Divide by 4.
-9/2 = x
The answer will be calculated by Pythagoras theorem here -
Step-by-step explanation:
Substitute variables with given values
Minus sign becomes plus sign if a negative is multiplied by a negative or a negative is put next to a negative number.
4x-7y=4(-5.2)-7(-6.8)
-20.8+47.6=26.8
B. 13
12^2 + 5^2 = c^2
169 = c^2
13 = c
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