Elena has $15.25. She was given $2.75. Then she spent $12.99 on a gift for her mother. How much money does Elena have left?
2 answers:
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Answer:
Step-by-step explanation:
Step 1: Find what adds to _ and multiples to_
It needs to multiple to the 'c' term or 9
It needs to add to the 'b' term or -10
Step 2: Find the numbers
We know -9 and -1 make 10 and multiple to 9
-9 x -1 = 9
-9 + (-1) + -10
Step 3: Write equation in form a(x-r)(x-s)
a = 1
r = -9
s = -1
Plug in the equation to get the factored form of the equation:
Therefore the factored form of the equation is
Answer:
77.93
Step-by-step explanation:
#We can simply read off the x,y coordinates directly from the graph.
#we know that a rectangle has pair of two equal sides. To calculate the area, we determine the dimension of any un-equal two sides:
#Using Pythagorean Theorem:
We can therefore calculate area as:
Hence, the area of the rectangle is 77.93