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Answer:
A. add -15 and 9
Step-by-step explanation:
We follow the PEMDAS rule as the order of operations to evaluate expressions.
P-Parenthesis
E-Exponents
M-Multiplication
D-Division
A-Addition
S-Subtraction
Given expression : 
In order to evaluate the expression, the first step would be to do the parenthesis operations which requires to add -15 and 9.
The slope is -2/3.
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Explanation:
y=mx+b
m= slope
-2/3=m
Answer:
x=y[base side of isosceles triangle]
x²+y²=19²
x=√{19²/2)}
x=13.44
y=13.44
Answer:
angle 1 and angle 7
Step-by-step explanation:
If two lines intersected by a transversal form supplementary same-side interior angles, then the lines are parallel.