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At present, Deborah's father is 39 years older than Deborah. 6 years ago, her father was 4 times as old as her. Solve for y, Deborah's current age.The диаметр of a circle is 26 cm. Find its area to the nearest whole numberfind the term in the number pattern equals 451 the pattern increases by 7determine the smallest positive integer and the most negative integer for which the разность between the square of 5 more than this number and the cube of 1 more than this number exceeds 22.Twice a number and minus five is less than ten