Three more than three times a number is one less than two times the number what is the number
2 answers:
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Answer:
Step-by-step explanation:
1) Tangent makes 90 degrees with the radius. Hence
a) Angle ABD = 90-angle BDC = 90-61.3 = 28.7
b) Triangle BCD is isosceles since tangents have equal length.
Hence angle BCD = 180-(61.3+61.3) = 57.4
c) Angle BDC = 57.4 (since triangle BCD is isosceles)
d) Angle BAC and Angle BCD are supplementary. Hence angle BAC = 122,6
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2) Arc length of minor arc BC =
b) ARc length of minor arc = circumference -minor arc
= 18.713
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3) circumference = pi d =
Answer:
For a rectangular prism-like swimming pool: .
when
,
and
.
Step-by-step explanation:
Let assume that swimming pool has a rectangular base and depth is the same at any point at the bottom. In addition, let and
be the width and length of the swimming pool. Then, the volume needed to fill the swimming pool is:
, where
is the depth of the pool.
Let be ,
and
. The volume of the swimming pool is: