Question

1. Вычисли: 1). –3,5 – 1, 2 = 2). – 4,5+2,3 = 3). 2*(– 1,3) = 4). – 4,6 : 0,2 = 5). – 0,28 : (– 1,4) =

Answer 1

Ответ:

1). –3,5 – 1, 2 = -(3,5+1,2)= -4,7

2). – 4,5+2,3 = -(4,5-2,3)= -2,2

3). 2*(– 1,3) = -(2*1,3)= -2,6

4). – 4,6 : 0,2 = -(4,6:0,2)= -23

5). – 0,28 : (– 1,4) = 0,28:1,4= 0,2

Answer 2

Ответ:

Надеюсь помог.) все правильно.

Answer 3

1) -3.5 + (-1.2) = -4.7

To compute the sum of two numbers with different signs, we subtract the absolute values and keep the sign of the number with the larger absolute value. In this case, the absolute value of -3.5 is larger than the absolute value of -1.2, so the sum is negative.

2) -4.5 + 2.3 = -2.2

Similar to the previous example, we subtract the absolute values and keep the sign of the number with the larger absolute value. In this case, the absolute value of -4.5 is larger than the absolute value of 2.3, so the sum is negative.

3) 2 * (-1.3) = -2.6

When multiplying a positive number by a negative number, the product is negative. In this case, we multiply 2 by -1.3 to get -2.6.

4) -4.6 / 0.2 = -23

To divide a negative number by a positive number, we divide the absolute values and keep the quotient negative. In this case, we divide the absolute value of -4.6 by the absolute value of 0.2 to get 23, and since the dividend is negative, the quotient is also negative.

5) -0.28 / (-1.4) = 0.2

When dividing a negative number by a negative number, the quotient is positive. In this case, we divide the absolute value of -0.28 by the absolute value of -1.4 to get 0.2, and since both the dividend and divisor are negative, the quotient is positive.

I hope this helps! Let me know if you have any further questions.