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dsp73
3 years ago
13

Can you help me with this question

Mathematics
1 answer:
Brilliant_brown [7]3 years ago
6 0
V = A * h;
V = volume of the building;
h = 35 m ;
A = the area of floor plan;
A = 30 ^2 + π*15^2 - (π*15^2) / 4 => A = 900 + π*675 / 4 ≈ 
900 + 3.14*675 / 4 ≈ 900 + 529.87 ≈ 1429.87m^2
V ≈ 50045.45 m^3
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Given vectors u = (-3,2) and v = (4,-1), if vector w=2u -3v, what is ||w|| ?
Brums [2.3K]
\bf \begin{cases}
u=\ \textless \ -3,2\ \textgreater \ \\
2u=2\ \textless \ -3,2\ \textgreater \ \\
\qquad \ \textless \ 2\cdot -3,2\cdot 2\ \textgreater \ \\
\qquad \boxed{\ \textless \ -6,4\ \textgreater \ }\\
----------\\
v=\ \textless \ 4,-1\ \textgreater \ \\
3v=3\ \textless \ 4,-1\ \textgreater \ \\
\qquad \ \textless \ 3\cdot 4,3\cdot -1\ \textgreater \ \\
\qquad \boxed{\ \textless \ 12,-3\ \textgreater \ }
\end{cases}\qquad
\begin{array}{llll}
w=2u-3v\\\\
w=\ \textless \ -6,4\ \textgreater \ -\ \textless \ 12,-3\ \textgreater \ \\\\
w=\ \textless \ -6-12,4-(-3)\ \textgreater \ \\\\
w=\ \textless \ -18,4+3\ \textgreater \ \\\\
\boxed{w=\ \textless \ -18,7\ \textgreater \ }
\end{array}
\\\\\\
||w||\implies \sqrt{a^2+b^2}\implies ||w||=\sqrt{(-18)^2+(7)^2}\implies ||w||=373
7 0
3 years ago
The radius of a circle is 7 cm. Find its area to the nearest tenth. (Please help due in an hour)
Zepler [3.9K]
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7 0
2 years ago
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zalisa [80]

Answer:

dunno

Step-by-step explanation:

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6 0
2 years ago
The graph of f(t) = 6.2" shows the value of a rare coin in year t. What is the
seraphim [82]

Answer:

  C.  When it was purchased (year 0), the coin was worth $6.

Step-by-step explanation:

The y-intercept is 6, indicating the value of the rare coin was 6 in year zero.

4 0
2 years ago
This is a question from my sibling's math class.
Solnce55 [7]

Answer:

14

Step-by-step explanation:

You can solve using PEMDAS:

Parentheses

Exponents

Multiplication

Division

Addition

Subtraction

3(2+5)-5(3)+8=?

3(7)-5(3)+8=?

No exponents

3(7)-5(3)+8=?

21-15+8=?

No division

21-15+8=?

21-7=?

21-7=14

3(2+5)-5(3)+8=14

5 0
2 years ago
Read 2 more answers
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