1down voteaccepted | Given a+ar+ar2=31a2+a2r2+a2r4=651 square the first equation From first equation Solving this quadra equation gives r=5 a=5r=1 So numbers are |
Mickey is asked to multiply four positive integers, but he adds them instead.Amazingly, his correct answer is equal to the correct answer for the multiplication problem.What is the sum of these four numbers?
giúp mình với,mik cần gấp,toán tiếng anh,viết cả lời giải!
three lines dissect a big triangle into four triangles and three quadrilaterals. the sum of the perimeters of the three quadrilateral is 25 cm, the sum of the perimeters of the four triangle is 20 cm. the perimeter of the big triangle is 19 cm. how big is the sum of the lengths of the three dissecting lines?
sum of three fractions is 213/70.the ratio of their numerator is 3:4:5 àn their denominations is 5:1:2 .Product ò them is
Given two adjacent angles AOB and BOC. The sum of measure of them is equal to 160o and the measure of angle AOB is equal to 7 times the measure of angle BOC
a)Find the measure of each angle
b)Inside angle AOC, draw ray OD such that angle COD=90o. Prove that OD is the bisector of angle BOA.
c)Draw the opposite ray OC' of ray OC. Find the measure of 2 angles AOC and BOC' then compare them
Given two adjacent angles AOB and BOC. The sum of measure of them is equal to 160o and the measure of angle AOB is equal to 7 times the measure of angle BOC
a)Find the measure of each angle
b)Inside angle AOC, draw ray OD such that angle COD=90o. Prove that OD is the bisector of angle BOA.
c)Draw the opposite ray OC' of ray OC. Find the measure of 2 angles AOC and BOC' then compare them
The sum of the values of x such that |x-3| < 2
The first two terms of a sequence are 2 and 3. Each next tern thereafter is the sum of the nearestly previous two terms if their sum is not greather than 10, 0 otherwise. The 2014th term is ?
The first two terms of a sequence are 2 and 3. Each next tern thereafter is the sum of the nearestly previous two terms if their sum is not greather than 10, 0 otherwise. The 2014th term is ?
What is the sum ò all multiples of 6 each of wich has exactly 10 positive divisora