Evaluate the numerical expression. -1/2 - (-3/4)

Find the maximum value of p= 4x + 5y subject to the following constraints :

Plz : denver is about 5,200 feet above sea level. which number line best represents this integer?

Astudy claims that the mean age of online dating service users is 40 years. some researchers think this is not accurate and want to show that the mean age is not 40 years. identify the null hypothesis, h0, and the alternative hypothesis, ha, in terms of the parameter μ. select the correct answer below: h0: μ≥40; ha: μ< 40 h0: μ≤40; ha: μ> 40 h0: μ≠40; ha: μ=40 h0: μ=40; ha: μ≠40