1 5x−2−5x−1+5x=21
2
log5−(2 x+3 )=1
3 Найти производного функции
y = xtg x
4 Решить иррациональное уравнение
√2 x−1= x-2
5.Решите тригонометрические уравнение
sin2 x+4 cos2 x=4cos x

Pranza plotted point a in the coordinate plane below.

Atextile fiber manufacturer is investigating a new drapery yarn, which the company claims has a mean thread elongation of 12 kilograms with a standard deviation of 0.5 kilograms. the company wishes to test the hypothesis upper h subscript 0 baseline colon mu equals 12 against upper h subscript 1 baseline colon mu less-than 12 using a random sample of n equals 4 specimens. calculate the p-value if the observed statistic is x overbar equals 11.8. round your final answer to five decimal places (e. g. 98.76543).

For problems 29 - 31 the graph of a quadratic function y=ax^2 + bx + c is shown. tell whether the discriminant of ax^2 + bx + c = 0 is positive, negative, or zero.