Question

1)x - 3/4 = 7/20                             2) Найдите отношение 6 3.17 : 15/17                     3) Найдите неизвестный член пропорции x ^ 0.9=1.8:3

Answer 1

1)х=7/20+3/4
   х=7/20+15/20
х=21/20
х=1 целая 1/20
2) 6целых3/17*17/15
ответ 7

Answer 2

1. To solve the equation x - 3/4 = 7/20, we can isolate x by performing the necessary operations. Here are the steps:

x - 3/4 = 7/20

To eliminate the fraction, we can multiply both sides of the equation by the least common denominator (LCD), which is 20:

20(x - 3/4) = 20(7/20)

Simplifying:

20x - 15 = 7

Next, isolate the variable by moving the constant term to the other side:

20x = 7 + 15

20x = 22

Finally, solve for x by dividing both sides of the equation by 20:

x = 22/20

Simplifying the fraction:

x = 11/10

So the solution to the equation is x = 11/10.

2. To find the ratio of 6.3.17 to 15/17, we can divide the two numbers:

Ratio = (6.3.17) / (15/17)

To divide fractions, we multiply the first fraction by the reciprocal of the second fraction:

Ratio = (6.3.17) * (17/15)

Simplifying the expression:

Ratio = (6.3.17) * (17/15) = (3.17 * 17) / 15 = 53.89 / 15

So the ratio of 6.3.17 to 15/17 is 53.89/15.

3. To find the unknown term in the proportion x^0.9 = 1.8/3, we can solve for x. Here are the steps:

x^0.9 = 1.8/3

To isolate x, we need to get rid of the exponent 0.9. We can do this by taking both sides of the equation to the power of 1/0.9:

(x^0.9)^(1/0.9) = (1.8/3)^(1/0.9)

Simplifying:

x = (1.8/3)^(1/0.9)

Now we can calculate the right side of the equation using a calculator or by simplifying the fraction:

x ≈ 0.9607

So the unknown term in the proportion x^0.9 = 1.8/3 is approximately 0.9607.