dshood6599
05.05.2020 •
Mathematics
Trina represents the girls in her class who play softball as set Xand the girls in her class who play basketball as set Y
.
X={Cami, Lu, Donna, Sue, Brenda, Alice, Marta, Shanice}
Y={Alice, Nancy, Kirsten, Lu, Shanice, Paula, Donna, Liz, Fatima}
Which notation should Trina use to represent all the girls who play both softball and basketball?
A. X∩Y
B. X⊂Y
C. Y⊂X
D. X∪Y
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Ответ:
solve a system of equations when multiplication is necessary to eliminate a variable. recognize systems that have no solution or an infinite number of solutions. the elimination method for solving systems of linear equations uses the addition property of equality. you can add the same value to each side of an equation.