Question

Вирази відношення в процентах: а) 4:5 б) 9/24 в) 15/3 г) 77:28 д) 1,6:5 1/3 е)6,3/70 ж)a/4a з) (8,4b):(4 1/5b) помогите пожалуйста

Answer 1

Expressions in Percentages:

a) 4:5 b) 9/24 c) 15/3 d) 77:28 e) 1.6:5 1/3 f) 6.3/70 g) a/4a h) (8.4b):(4+1/5b)

Let's calculate the values of these expressions in percentages.

a) 4:5: To express 4:5 as a percentage, we need to divide 4 by 5 and then multiply by 100. 4/5 = 0.8 0.8 * 100 = 80%

b) 9/24: To express 9/24 as a percentage, we need to divide 9 by 24 and then multiply by 100. 9/24 = 0.375 0.375 * 100 = 37.5%

c) 15/3: To express 15/3 as a percentage, we need to divide 15 by 3 and then multiply by 100. 15/3 = 5 5 * 100 = 500%

d) 77:28: To express 77:28 as a percentage, we need to divide 77 by 28 and then multiply by 100. 77/28 ≈ 2.75 2.75 * 100 = 275%

e) 1.6:5 1/3: To express 1.6:5 1/3 as a percentage, we need to convert the mixed number 5 1/3 to an improper fraction. 5 1/3 = 16/3 Then, we divide 1.6 by 16/3 and multiply by 100. 1.6 ÷ (16/3) ≈ 0.3 0.3 * 100 = 30%

f) 6.3/70: To express 6.3/70 as a percentage, we need to divide 6.3 by 70 and then multiply by 100. 6.3/70 ≈ 0.09 0.09 * 100 = 9%

g) a/4a: To express a/4a as a percentage, we need to simplify the expression. a/4a = 1/4 1/4 * 100 = 25%

h) (8.4b):(4+1/5b): To express (8.4b):(4+1/5b) as a percentage, we need to simplify the expression. (8.4b)/(4+1/5b) = (8.4b)/(4+1/5b) Unfortunately, without specific values for 'b', we cannot calculate the exact percentage.

Please note that the calculations provided are based on the given expressions and may vary depending on the context or specific values assigned to the variables.