Simplify
7 1/5 times 49 7/5 equivalent to 49

Step-by-step explanation:

7 1/5 × 49 7/5 = 49

convert mixed numbers into improper fractions (whole number × denominator + numerator)

7 × 5 + 1 = 36

49 × 5 + 7 = 252

36/5 × 252/5 = 49

All fractions must have a common denominator

49 × 5 = 245

36/5 × 252/5 = 245/5

Add numerators

36 + 252 = 288

288/5 = 245/5

57 3/5 = 49

These do not equal each other according to my calculations. Is the problem written correctly? Or did I misinterpret a given number?

answer: x= -2y

step-by-step explanation:

since the airplane is moving with constant speed then the distance travelled can be calculated by x=u*t

in km/h would be:

x=640*3.5=2.240 km

in m/s would be:

u=640 km/h= 640.000 m/h =640.000/ 3600 m/s =177.8 m/s

t= 3.5 h= 3.5 * 3600 s=12.600 s

then x=u*t= 177.8*12.600= 2.240.280 m