Question

№2. Выполните умножение: 22,7 ∙ 3,5 №3. Решите уравнение: 1,7 ∙ у = 1,53 №4. Найдите значение выражения: 2∙а + 1,5∙с, если а=1,4 и с=0,8 №5. Найдите 35% от 900. №6. Площадь прямоугольника равна 14,5см2

Answer 1

2. 22.7*3.5=79.45
3.y=1.53 разделить на 1.7  y=0.9
4. 2*1.4+1.5*0.8=4
5.900 разделить на 100*35=315
6. непонятно что нужно найти! напишите яснее.
все остальное правильно

Answer 2

№2. Умножение: 22,7 ∙ 3,5

To multiply 22.7 by 3.5, you can follow these steps:

Step 1: Multiply the whole numbers: 22 * 3 = 66. Step 2: Multiply the decimal parts: 0.7 * 0.5 = 0.35. Step 3: Add the results from step 1 and step 2: 66 + 0.35 = 66.35.

Therefore, 22.7 ∙ 3.5 = 66.35.

№3. Решение уравнения: 1,7 ∙ у = 1,53

To solve the equation 1.7 ∙ у = 1.53, we need to isolate the variable у.

Step 1: Divide both sides of the equation by 1.7: 1.7 ∙ у / 1.7 = 1.53 / 1.7 у = 0.9

Therefore, the solution to the equation 1.7 ∙ у = 1.53 is у = 0.9.

№4. Нахождение значения выражения: 2∙а + 1.5∙с, если а = 1.4 и с = 0.8

To find the value of the expression 2∙а + 1.5∙с, given that а = 1.4 and с = 0.8, we can substitute the values and perform the calculation.

2∙1.4 + 1.5∙0.8 = 2.8 + 1.2 = 4

Therefore, the value of the expression 2∙а + 1.5∙с, if а = 1.4 and с = 0.8, is 4.

№5. Нахождение 35% от 900

To find 35% of 900, you can follow these steps:

Step 1: Convert the percentage to a decimal: 35% = 0.35. Step 2: Multiply the decimal by the number: 0.35 * 900 = 315.

Therefore, 35% of 900 is 315.

№6. Площадь прямоугольника равна 14.5 см²

To calculate the dimensions of the rectangle with an area of 14.5 cm², we need more information. The area of a rectangle is calculated by multiplying its length by its width. Without knowing either the length or the width, we cannot determine the dimensions of the rectangle. Could you please provide additional information?