13x+4y=487------>13x+4y=487----------->13x+4y=487
6x+2y=232-------->-2(6x+2y)=232*-2---->-12x-4y=-464
x=23----> 6(23)+2y=232------->138+2y=232----->2y=94--->y=47
x=ties y=suspenders
90. For the first position,you can have one of 10 ppl in president/vice president. Then the remaining 9 ppl can be put in the remaining position. 10 * 9 = 90. If you need more explantion check these keywords. Factorial, permutations, combinations.
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347,316,029. Three hundred and forty seven million, three hundred and sixteen thousand, and twenty nine.
Answer:
1370.75
Step-by-step explanation:
