Question

Из села Снежное в противоположных направлениях вышли два лыжника.Первый лыжник шёл со скоростью10км/ч.C какой скоростью шёл другой лыжник,если через три часа расстояние между ними было 66км? 22км? 12км? 12км/ч? Участок с яблонями обнесли забором.Вычисли длину забора,если длина участка 25м,а ширина на 5м короче? 45м? 90м? 500м в квадрате? Какое число не является чётным? 10200? 59248? 27933?

Answer 1

10*3=30км
66-30=36км
36:3=12 км/ч

Answer 2

Calculation of the Second Skier's Speed

To find the speed of the second skier, we can use the formula: speed = distance / time.

Given that the first skier's speed is 10 km/h and the distance between them after 3 hours is 66 km, we can calculate the second skier's speed as follows:

Speed = Distance / Time = 66 km / 3 hours = 22 km/h.

Therefore, the second skier was traveling at a speed of 22 km/h.

Calculation of the Length of the Fence

To calculate the length of the fence surrounding the apple orchard, we need to find the perimeter of the rectangular area.

Given that the length of the area is 25 m and the width is 5 m shorter, we can calculate the width as follows:

Width = Length - 5 m = 25 m - 5 m = 20 m.

Now, we can calculate the perimeter of the rectangular area using the formula: perimeter = 2 * (length + width).

Perimeter = 2 * (25 m + 20 m) = 2 * 45 m = 90 m.

Therefore, the length of the fence is 90 meters.

Identifying the Odd Number

To determine which number is not even among the given options, we need to check if each number is divisible by 2. If a number is divisible by 2, it is even; otherwise, it is odd.

Let's check each number:

- 10200: This number is divisible by 2 since it ends in 0. Therefore, it is even. - 59248: This number is divisible by 2 since it ends in 8. Therefore, it is even. - 27933: This number is not divisible by 2 since it does not end in 0, 2, 4, 6, or 8. Therefore, it is odd.

Therefore, the number 27933 is the one that is not even.