Mathematics, 14.02.2020 21:26 JaleahOwens13
A paper examined the relationship between the time that eagles spend aerially searching for food (indicated by the percentage of eagles soaring) and relative food availability. The accompanying data were taken from a scatterplot that appeared in this paper. Use x to denote salmon availability and y to denote the percentage of eagles in the air.
x 0 0 0.2 0.5 0.5 1.0 1.2 1.9 2.6 3.3 4.7 6.5
y 28.0 68.8 26.8 38.3 48.2 30.9 26.7 8.0 4.4 7.2 6.8 6.6
(a) Calculate the correlation coefficient for these data. (Give the answer to three decimal places.)
r =
(b) Because the scatterplot of the original data appeared curved, transforming both the x and y values by taking square roots was suggested. Calculate the correlation coefficient for the variables x and y . (Give the answer to three decimal places.)
r =
Answers: 2
Mathematics, 22.06.2019 00:00
Aspacecraft can attain a stable orbit 300 kilometers above earth if it reaches a velocity of 7.7 kilometers per second. the formula for a rocket's maximum velocity v in kilometers per second is vequalsminus0.0098tplusc ln upper r, where t is the firing time in seconds, c is the velocity of the exhaust in kilometers per second, and r is the ratio of the mass of the rocket filled with fuel to the mass of the rocket without fuel. find the velocity of a spacecraft whose booster rocket has a mass ratio of 20, an exhaust velocity of 2.1 km/s, and a firing time of 15 s. can the spacecraft achieve a stable orbit 300 km above earth?
Answers: 3
Mathematics, 22.06.2019 01:30
Write 37/22 as a decimal rounded to the nearest hundredth.
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Mathematics, 22.06.2019 04:00
Andy wants to find the distance d across a river. he located points as shown in the figure, then use similar triangles to find that d = 223.5 feet. how can you tell without calculating that he must be wrong? tell what you think he did wrong and correct his error. round your answer to the nearest tenth if necessary. andy must have used the wrong . the distance d is actually feet.
Answers: 3
Mathematics, 22.06.2019 07:00
Given: m< ade = 60° and m< cdf = (3x + 15) prove: x = 15 what is the missing statement and the missing reason in step 5?
Answers: 2
A paper examined the relationship between the time that eagles spend aerially searching for food (in...
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