1 point
A construction project requires the installation of concrete I-beams. The
dimensions...
Mathematics, 28.05.2021 19:10 maddbroms
1 point
A construction project requires the installation of concrete I-beams. The
dimensions for an I-beam are shown below. Note: 9" is 9 inches. If the
project requires a total of 20 I-beams, approximately how many cubic feet
of concrete is needed to pour these l-beams? Round your final answer to
the nearest cubic foot.
Answers: 3
Mathematics, 21.06.2019 18:50
The trigonometric ratios sine and secant are reciprocals of each other
Answers: 2
Mathematics, 21.06.2019 19:30
Needmax recorded the heights of 500 male humans. he found that the heights were normally distributed around a mean of 177 centimeters. which statements about max’s data must be true? a) the median of max’s data is 250 b) more than half of the data points max recorded were 177 centimeters. c) a data point chosen at random is as likely to be above the mean as it is to be below the mean. d) every height within three standard deviations of the mean is equally likely to be chosen if a data point is selected at random.
Answers: 2
Mathematics, 21.06.2019 19:50
Prove (a) cosh2(x) − sinh2(x) = 1 and (b) 1 − tanh 2(x) = sech 2(x). solution (a) cosh2(x) − sinh2(x) = ex + e−x 2 2 − 2 = e2x + 2 + e−2x 4 − = 4 = . (b) we start with the identity proved in part (a): cosh2(x) − sinh2(x) = 1. if we divide both sides by cosh2(x), we get 1 − sinh2(x) cosh2(x) = 1 or 1 − tanh 2(x) = .
Answers: 3
Mathematics, 21.06.2019 21:00
Atriangular field has sides of lengths 21, 39, and 41 yd. find the largest angle. (round your answer to the nearest degree.)
Answers: 1
Mathematics, 15.12.2020 01:00
Mathematics, 15.12.2020 01:00
History, 15.12.2020 01:00
Biology, 15.12.2020 01:00
Biology, 15.12.2020 01:00
History, 15.12.2020 01:00
Mathematics, 15.12.2020 01:00
Mathematics, 15.12.2020 01:00
English, 15.12.2020 01:00
Mathematics, 15.12.2020 01:00