Question

1) 1,9×(-13)+30= 2) -3,5×9,2-7,8=3) -6,1×(-0,5)-4,15=4) 0,05×(-100)+(-11,2)×3=5) -20×(-6,9)-39,4×10=6) 8,5×(-0,4)+(-1,3)×2=ПОМОГИТЕ ПЛЗ​

Answer 1

Ответ:

1. 5,3

2. -40

3. -1,1

4. 38,6

5. -256

6. -6

Answer 2

1. 1,9×(-13) + 30 = -24.7

To calculate this, multiply 1.9 by -13, and then add 30 to the result.

1.9 × (-13) = -24.7 -24.7 + 30 = 5.3

Therefore, 1.9×(-13) + 30 equals 5.3.

2. -3.5×9.2 - 7.8 = -41.98

Multiply -3.5 by 9.2, and then subtract 7.8 from the result.

-3.5 × 9.2 = -32.2 -32.2 - 7.8 = -41.98

Therefore, -3.5×9.2 - 7.8 equals -41.98.

3. -6.1×(-0.5) - 4.15 = -1.225

Multiply -6.1 by -0.5, and then subtract 4.15 from the result.

-6.1 × (-0.5) = 3.05 3.05 - 4.15 = -1.225

Therefore, -6.1×(-0.5) - 4.15 equals -1.225.

4. 0.05×(-100) + (-11.2)×3 = -33.55

Multiply 0.05 by -100, and then multiply -11.2 by 3. Finally, add the two results together.

0.05 × (-100) = -5 -11.2 × 3 = -33.6 -5 + (-33.6) = -33.55

Therefore, 0.05×(-100) + (-11.2)×3 equals -33.55.

5. -20×(-6.9) - 39.4×10 = 226.6

Multiply -20 by -6.9, and then multiply 39.4 by 10. Finally, subtract the second result from the first.

-20 × (-6.9) = 138 39.4 × 10 = 394 138 - 394 = -256

Therefore, -20×(-6.9) - 39.4×10 equals -256.

6. 8.5×(-0.4) + (-1.3)×2 = -5.8

Multiply 8.5 by -0.4, and then multiply -1.3 by 2. Finally, add the two results together.

8.5 × (-0.4) = -3.4 -1.3 × 2 = -2.6 -3.4 + (-2.6) = -5.8

Therefore, 8.5×(-0.4) + (-1.3)×2 equals -5.8.