7^2017-7^2016=7^2016(7-1)=6.7^2016
7^2017-7^2016=7^2016(7-1)=6.7^2016
given isosceles trapezoid ABCD (AB//CD), AC is perpendicular to BD and the length of the height of the ABCD is 7 cm. What is the area of the isosceles trapezoid ABCD?
Given the point C on the segment AB such that the ratio of AC to CB is 3:7. Find the length of BC if the length of AB is 30 cm.
Answer: The length of BC is ...... cm
the product of roots of equation x(x-2016)(x+2017)=0
The product of roots of the equation :
X(X-2016)(X+2017)=0
The mean, median, and mode of the 7 data values 60,100,x,40,50,200,90 are all equal to x. What is the value of ?
The operation @ on two numbers produces a number equal to their sum minus 2.The value of (...(( 1 @ 2) @ 3) ... @ 2017 ) is
\(\text{Tính:}\)
\(7^{2017}-7^{2016}\)
tinh x^10+2017x^9-2017x^8-2017x^7+...........+2017x^2-2017x+2017 voi x=2016
tinh x^10+2017x^9-2017x^8-2017x^7+...........+2017x^2-2017x+2017 voi x=2016