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Aleonysh [2.5K]
3 years ago
8

Preston drew a blueprint of an additional room he is planning to add to his house. On the blueprint, 2 centimeters is equal to 3

feet in the actual room. If Preston wants the room to measure 9 feet by 12 feet, what are these dimensions on the blueprint?
A.
9 cm by 12 cm
B.
6 cm by 8 cm
C.
6 cm by 12 cm
D.
8 cm by 9 cm
Mathematics
2 answers:
Sidana [21]3 years ago
8 0
1 cm = 1.5 feet
9 feet / 1.5 = 6 cm    12 feet / 1.5 = 8 cm    B. 6 cm by 8 cm
NeTakaya3 years ago
7 0

Answer:

it is b the other one was confusing to me

Step-by-step explanation:

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I don't know how to do the middle one or how to show work
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5 0
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Find d for the arithmetic series with S17=-170 and a1=2
Irina18 [472]
So, we know the sum of the first 17 terms is -170, thus S₁₇ = -170, and we also know the first term is 2, well

\bf \textit{ sum of a finite arithmetic sequence}\\\\
S_n=\cfrac{n(a_1+a_n)}{2}\qquad 
\begin{cases}
n=n^{th}\ term\\
a_1=\textit{first term's value}\\
----------\\
n=17\\
S_{17}=-170\\
a_1=2
\end{cases}
\\\\\\
-170=\cfrac{17(2+a_{17})}{2}\implies \cfrac{-170}{17}=\cfrac{(2+a_{17})}{2}
\\\\\\
-10=\cfrac{(2+a_{17})}{2}\implies -20=2+a_{17}\implies -22=a_{17}

well, since the 17th term is that much, let's check what "d" is then anyway,

\bf n^{th}\textit{ term of an arithmetic sequence}\\\\
a_n=a_1+(n-1)d\qquad 
\begin{cases}
n=n^{th}\ term\\
a_1=\textit{first term's value}\\
d=\textit{common difference}\\
----------\\
n=17\\
a_{17}=-22\\
a_1=2
\end{cases}
\\\\\\
-22=2+(17-1)d\implies -22=2+16d\implies -24=16d
\\\\\\
\cfrac{-24}{16}=d\implies -\cfrac{3}{2}=d
6 0
3 years ago
Captain has $30 flame has a $20 note $5 notes . how much more moneny does captain have
SCORPION-xisa [38]

Captain has $30 money

Flame has $20 +$5 =$25

difference =30-25=5

Captain has $5 more money

5 0
3 years ago
Simplify:<br>32x3y2z2<br>-8xyz 5​
amm1812

Answer: 4y2z2 • (2x + y) • (4x2 - 2xy + y2)   i think.hope it was helpful.

Step-by-step explanation:

7 0
3 years ago
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