3 years ago

Plz help I need help

Mathematics

2 answers:

stellarik [79]3 years ago

8 0

Answer:its c

Step-by-step explanation:

svp [43]3 years ago

7 0

Answer:

Answer choice B

Step-by-step explanation:

15 1/5= 76/5

5 3/10= 26.5/5

49.5/5=9.9 or 9 9/10

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Find the sum of the first 30 terms of the sequence below an=3n+2

Solnce55 [7]

First off, let's find the 1st term's value, and the 30th term's value,

$\bf a1=3(1)+2\implies a1=5\qquad \qquad \quad a30=3(30)+2\implies a30=92\\\\
-------------------------------\\\\
~~~~~~~\textit{ Sum of an arithmetic sequence}\\\\
S_n=\cfrac{n(a1+an)}{2}~ 
\begin{cases}
n=n^{th}\ term\\
a1=\textit{first term's value}\\
----------\\
a1=5\\
a30=92\\
n=30
\end{cases} \implies S_{30}=\cfrac{30(5+92)}{2}
\\\\\\
S_{30}=15(97)$

6 0

3 years ago

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Put the following equation in slope-intercept form: y−5=7/4(x-1)

Lelu [443]

Answer:

$y - 5 = \frac{7}{4} (x - 1) \\ 4y - 20 = 7x - 7 \\ 4y = 7x + 13 \\ y = \frac{7}{4} x + \frac{13}{4}$