Question

1.выполните действия 1)-2,1*3,8=??? 2)-1 11/13*(-2 7/16)=??? 3)-14,16/(-0,6)=??? 4)-18,36/18=???

Answer 1

1) -7,98
2) 9/2
3) 118/5
4) -1,02

Answer 2

1. Выполнение действий

1) -2.1 * 3.8 = ???

To multiply -2.1 by 3.8, you simply multiply the two numbers together:

-2.1 * 3.8 = -7.98

Therefore, the answer to the first question is -7.98.

2) -1 + 11/13 * (-2 + 7/16) = ???

To solve this expression, we need to follow the order of operations, which is parentheses, exponents, multiplication and division (from left to right), and addition and subtraction (from left to right).

First, let's simplify the expression inside the parentheses:

(-2 + 7/16) = -2 + 0.4375 = -1.5625

Now, let's simplify the expression:

-1 + 11/13 * (-1.5625)

To multiply 11/13 by -1.5625, we multiply the numerators and denominators:

11/13 * -1.5625 = -1.296875

Finally, we can add -1 to -1.296875:

-1 + (-1.296875) = -2.296875

Therefore, the answer to the second question is -2.296875.

3) -14.16 / (-0.6) = ???

To divide -14.16 by -0.6, we simply divide the two numbers:

-14.16 / -0.6 = 23.6

Therefore, the answer to the third question is 23.6.

4) -18.36 / 18 = ???

To divide -18.36 by 18, we simply divide the two numbers:

-18.36 / 18 = -1.02

Therefore, the answer to the fourth question is -1.02.

To summarize:

1) -2.1 * 3.8 = -7.98 2) -1 + 11/13 * (-2 + 7/16) = -2.296875 3) -14.16 / (-0.6) = 23.6 4) -18.36 / 18 = -1.02

I hope this answers your questions. Let me know if you have any further queries!