1. Cut a long 105cm iron wire into two pieces.
Then they are bent into an equilateral triangle with a side length of y cm and a square with a side length of 3y cm respectively. Find the area of a square. Answer: find y: 3y+4x3y =10515y =105y = 7 answer: square area = (3x7) x (3x7) = 44 1 (square centimeter) 2. Yesterday.
Shao Fang and her parents went to a theme park. It is understood that they brought $2,000. (1) As Shao Fang is a student,
So her admission fee is half that of an adult. After paying the entrance fee
They left 1200 dollars. How much is Shao Fang's admission fee? Let's say that the admission fee for the small party is Y yuan: (2y= adult/person) 2y2+y+1200 = 20005y+1200 = 20005y = 800y =160a: the admission fee for the small party = $/kloc-.
Each of them took the roller coaster three times.
The result is $ 1065. It is known that adults and students have the same price.
How much does it cost to ride a roller coaster? (1200- 1065)/3=45 A: You have to pay $45 for a roller coaster ride.
Reference: myself ~ ~
3y+ 12y = 105y = 7 area = 44 1 2x+x/2 = 800 x = 320 = 160( 1200- 1065)/9 = 15
1) 72 = 3x+3 (2x) 72 = 3x+6x72 = 9xx = 8 ÷ x = 8 ∴ The circumference of a big triangle =2*8*3 =48cm 2) Let the price of a can of chestnut rice oil be X dollars. The price of a bag of rice is 2x100-x-2x = 25100-3x = 25100-25 = 3x75 = 3xx The price of a bag of rice is USD 2 (25)=$50 3). Suppose the age of Meng Xiao is X 46+8 now. 654-16 = 2x38 = 2xx =19 ∴ Meng Xiao is now the third and x+2+2x+x+2 = 603x+6 = 603x = 18 ∴ the first.