Question

alculate:
 Câu 2:
If you walk 45 minutes at a rate 4km/h and then run for 30 minutes at a rate of 10km/h, how many kilometers will you have gone at the end of one hour and 15 minutes?
Answer: km. Câu 3:
What is the maximum possible area, in , of a rectangle with a perimeter of 20cm?
Answer: . Câu 4:
Fill the missing number in the blank:
 Câu 5:
In a magic triangle, each of the six whole numbers 10; 11; 12; 13; 14; 15 is placed in one of the circles so that the sum, S, of the three numbers on each side of the triangle is the same. The largest possible value for S is  Câu 6:
Find the highest common factor of 147x and 98y if HCF(x;y)=1.
Answer:  Câu 7:
Let . Find the value of .
Answer:  Câu 8:
In triangle ABC, the measure of angle B is less than 1.5 times the measure of angle A and the measure of angle C is less than 2.5 times the measure of angle A. What is the measure of angle A in degrees?
Answer: The measure of angle A is . Câu 9:
Write the next number in the sequence: 8; 24; 72;  Câu 10:
Complete:    Giúp mik với, có lời giải chi tiết nha. Thanks cả nhà =))))

Answer 1

nếu thực sự bn cần mk sẽ giúp, còn để ra oai thì bye

cau1: dùng máy tính cho khỏi hại não

cau2: s = 4.3/4 + 10.1/2 = 8km

Answer 2

neko chan , bạn làm ơn tran-sịt-lấy cái đề hộ mình đc ko, rồi mình làm cho