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3 years ago

2/3 times 8 Please answer quick

Mathematics

2 answers:

Natali5045456 [20]3 years ago

6 0

Answer:

16/3 or 5 1/3

Step-by-step explanation:

goldfiish [28.3K]3 years ago

3 0

Answer:

2/3x8= 2/3x1/8= 6/8 if u simplifie it, it would be 3/4.

=3/4

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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

4 years ago

In ΔOPQ, the measure of ∠Q=90°, the measure of ∠O=76°, and OP = 7.3 feet. Find the length of PQ to the nearest tenth of a foot..

PSYCHO15rus [73]

Answer: 7.1 feet

Step-by-step explanation: I guessed lol

6 0

3 years ago

I need help with this question

ahrayia [7]

Answer:

l:6 w:9

Step-by-step explanation:

1 54

2 27

3 18

6 9

8 0

3 years ago

Calculate a length of a square ground of perimeter 160m

wlad13 [49]

Square Perimetre = Side x 4
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5 0

3 years ago

Let f(x) = -8x + 4 and g(x) = 3x2 + 5. Find f(7) + g(7) .

VMariaS [17]

Answer:

-7

Step-by-step explanation:

substitute both x's for 7:

(-8(7)+4)+ (3(7)2+5)

= -54 + 47

= -7

6 0

3 years ago