Mathematics, 16.11.2019 05:31 maddieeelllis3956
Achild wanders slowly down a circular staircase from the top of a tower. with x, y,z in feet and the origin at the base of the tower, her position t minutes from the start is given by x=30cost, y=30sint, z=110−5t. (a) how tall is the tower? height = 110 ft (b) when does the child reach the bottom? time = 22 minutes (c) what is her speed at time t? speed = 5*sqrt(37) ft/min (d) what is her acceleration at time t? acceleration = sqrt(30^2(cos(t)^2i+sin(t)^2j)) ft/min2
Answers: 1
Mathematics, 21.06.2019 17:30
The manufacturer of a new product developed the following expression to predict the monthly profit, in thousands of dollars, from sales of the productwhen it is sold at a unit price of x dollars.-0.5x^2 + 22x - 224what is represented by the zero(s) of the expression? a.the profit when the unit price is equal to 0b.the unit price(s) when the profit is equal to 0c.the profit when the unit price is greatestd.the unit price(s) when profit is greatest
Answers: 3
Mathematics, 21.06.2019 19:30
Two corresponding sides of two similar triangles are 3cm and 5cm. the area of the first triangle is 12cm^2. what is the area of the second triangle?
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Mathematics, 21.06.2019 19:30
Which of the points a(6, 2), b(0, 0), c(3, 2), d(−12, 8), e(−12, −8) belong to the graph of direct variation y= 2/3 x?
Answers: 2
Mathematics, 21.06.2019 20:00
What is the x-intercept and y-intercept of the equation 2x+1. 2o
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Achild wanders slowly down a circular staircase from the top of a tower. with x, y,z in feet and the...
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