Write \vec{y} as the sum of two orthogonal vectors, \vec{x}_{1} in Span\left\lbrace u\right\rbrace and \vec{x}_{2} orthogonal to \vec{u}.

Daniel bought a computer game for $25 and later sold it to thomas for a 40% profit. how much did daniel sell the computer game for?

Five infinity stones cost $16.80. what is the price per infinity stone ?

Summary statistics given for independent simple random samples from two populations. use the pooled t-interval procedure to obtain specified confidence interval. x1=71.6, s1=3.9, n1=11, x2=67.9, s2=3.4, n2=9 determine a 99% confidence level.