Question

1) 10/11:20 2) 1 1/5×7 1/2 3) 2 6/7:3 1/3 4) 3 3/5:x=2 1/4 СРОЧНО​

Answer 1

Пошаговое объяснение:

1) 1/22

2) 9

3) 6/7

4) х=8/5

Answer 2

Sure, let's solve these problems one by one:

1. To convert the time 10/11:20 to a decimal representation, we need to divide 10 by 11 and then add the result to 20.

10/11:20 = 10/11 + 20 = 0.909 + 20 = 20.909

So, 10/11:20 is approximately equal to 20.909.

2. To multiply 1 1/5 by 7 1/2, we need to convert both mixed numbers to improper fractions and then perform the multiplication.

1 1/5 = (51 + 1)/5 = 6/5 7 1/2 = (27 + 1)/2 = 15/2

Now, multiply the fractions: (6/5) * (15/2) = (6 * 15) / (5 * 2) = 90/10 = 9

So, 1 1/5 multiplied by 7 1/2 is equal to 9.

3. To divide 2 6/7 by 3 1/3, we need to convert both mixed numbers to improper fractions and then perform the division.

2 6/7 = (72 + 6)/7 = 20/7 3 1/3 = (33 + 1)/3 = 10/3

Now, divide the fractions: (20/7) / (10/3) = (20/7) * (3/10) = (20 * 3) / (7 * 10) = 60/70 = 6/7

So, 2 6/7 divided by 3 1/3 is equal to 6/7.

4. To find the value of x in the equation 3 3/5 : x = 2 1/4, we need to convert both mixed numbers to improper fractions and then solve for x.

3 3/5 = (53 + 3)/5 = 18/5 2 1/4 = (42 + 1)/4 = 9/4

Now, rewrite the equation: 18/5 : x = 9/4

To divide fractions, we multiply the first fraction by the reciprocal of the second fraction: (18/5) * (4/9) = (18 * 4) / (5 * 9) = 72/45 = 8/5

Therefore, x is equal to 8/5.

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