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ki77a [65]
3 years ago
9

There are 25 students in a class, 40 percent of whom are girls. If the average

Mathematics
1 answer:
svetoff [14.1K]3 years ago
5 0

Answer:

135

Step-by-step explanation:

120 + 150 = 270

270 ÷ 2 = 135

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Mr.Willams' physical education class lasts 7/8 hours. How many minutes are spent warming up and cooling down?
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1 PERFORMANCE - Essay
Amiraneli [1.4K]

Answer:

Thus the length = 230 and width = 90.

Step-by-step explanation:

Farmer Fernanda wants to put a fence around her rectangular field. The length of the field is 40 feet less  than 3 times the width.

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7 0
3 years ago
An evergreen nursery usually sells a certain shrub after 7 years of growth and shaping. The growth rate during those 7 years is
Ne4ueva [31]

Answer:

( 0.6 t^2 + 3t + 11 ) cm

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dh/dt = 1.2t + 3

at t = 0, h = 11 cm

(a)

dh / dt = 1.2 t + 3

dh = (1.2 t + 3) dt

integrate on both sides

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Put in equation (1) , we get

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Thus, teh height of tree after t years is given by

( 0.6 t^2 + 3t + 11 ) cm.

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3 years ago
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