Solve the system by elimination .
2x-y=10
-3x+y=-12...
Answers: 2
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Mathematics, 21.06.2019 16:30
The average human heart beats 1.15 \cdot 10^51.15β
10 5 1, point, 15, dot, 10, start superscript, 5, end superscript times per day. there are 3.65 \cdot 10^23.65β
10 2 3, point, 65, dot, 10, start superscript, 2, end superscript days in one year.how many times does the heart beat in one year? write your answer in scientific notation, and round to one decimal place.
Answers: 1
Mathematics, 21.06.2019 18:50
What are the values of a, b, and c in the quadratic equation 0 = x2 β 3x - 2? a = 1, b = 3, c = 2 a=, b = -3,c=-2 a = 1, b = 3, c= 2 a = 1.0= -3, c = 2
Answers: 2
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