请教几题

cxks01

1.if n is a positive integer and n^2 is divisible by 72,then the largest positive integer that must divide n is?  

2.if the value of a piece of property decreases by 10%while the tax rate on the property increases by 10%,what is the effece on the tax?

3.which of the follwing lists the number of points att which a circle can intersect a triangle
答案是1.2.3.4.5 and6       这题完全不懂题目在说什么要求什么

DS
1.mr.d deposits $10000in a savings certificate earning p% annual interest compounded quartely.what is the value of p?
(1)during the term of the certificate,he earns $18 more than he would if the interest were not compounded
(2)he withdraws all the money six months after depositing it

2.every student graduating from b college is either a 4_year student or a transfer student.if b college is graduating an equal number of 4_year students and transfer students,what fraction of the students who graduate with honors are transfer students?
(1)of the 700 transfer students graduating,300 are graduating with honor
(2)50%more transfer students than 4_year students are graduating with honors.

3.a certain list consists of several different integers.is the product of all the integers in the list positive?
(1)the product of the greatest and smallest of the in tegers in the list is positive
(2)there is an even number of integers in the list

cxks01

自己顶一下，高手在哪里？

cxks01

自己顶一下，高手在哪里？