Identify the transformation that maps the regular pentagon with a center (0, -2) onto itself.
a) reflect across the x-axis
b) rotate 90° about the point (0, -2)
c) rotate 144° about the point (0, -2)
d) rotate 180° about the origin (0, 0)

Restrictions on f(x) = 1/x+5 and g(x) = x-2

When using the linear combination metho e linear combination method to solve a system of linear equations, the four options are:

Atechnician compares repair costs for two types of microwave ovens (type i and type ii). he believes that the repair cost for type i ovens is greater than the repair cost for type ii ovens. a sample of 6767 type i ovens has a mean repair cost of $79.79$⁢79.79. the population standard deviation for the repair of type i ovens is known to be $19.18$⁢19.18. a sample of 5555 type ii ovens has a mean repair cost of $75.24$⁢75.24. the population standard deviation for the repair of type ii ovens is known to be $21.40$⁢21.40. conduct a hypothesis test of the technician's claim at the 0.050.05 level of significance. let μ1μ1 be the true mean repair cost for type i ovens and μ2μ2 be the true mean repair cost for type ii ovens. step 2 of 4 : compute the value of the test statistic. round your answer to two decimal places.