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11111nata11111 [884]
3 years ago
15

Cheryl read for 30 minutes twice yesterday.Today she read for twice as long as she did yesterday.choose the expression that is a

correct translation of the problem.
Mathematics
1 answer:
mars1129 [50]3 years ago
4 0

Answer:

(30x2)x2

Step-by-step explanation:

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An auditorium has 50 rows of seats. The first row has 20 seats, the second row has 21 seats, the third row has 22 seats, and so
Vikentia [17]

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1050

Step-by-step explanation:

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A survey of teens suggested that 33% can name at least one professional baseball player, and 90% of those teens can also name at
loris [4]

Answer:

d.\ 0.33 + 0.64 – (0.90)(0.33) = 0.673

Step-by-step explanation:

Given

P(Baseball) = 33\%

P(Baseball\ n\ Football) = 90\%

P(Football) = 64\%

Required

P(Baseball\ or\ Football)

This is calculated as:

P(Baseball\ or\ Football) =P(Baseball) + P(Football) -P(Baseball\ n\ Football)

P(Baseball\ or\ Football) = 0.33 + 0.64 - (0.90)(0.33)

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3 0
2 years ago
Given a cone with a volume of 288, and height 7 in., find the base radius of the cone. Use 3.14 for pi. Round your answer to the
jek_recluse [69]

Answer:

The radius of the base is r=6.3\ in

Step-by-step explanation:

we know that

The volume of a cone is equal to

V=\frac{1}{3}\pi r^{2} h

we have

V=288\ in^{3}

h=7\ in

\pi=3.14

substitute and solve for r

288=\frac{1}{3}(3.14)r^{2} (7)

864=(3.14)r^{2} (7)

r^{2}=864/[(3.14)(7)]

r=6.3\ in

3 0
3 years ago
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