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stira [4]
3 years ago
7

What is the GCF of 12 and 30?

Mathematics
2 answers:
motikmotik3 years ago
5 0
The GCF of 12 and 30 is 6
Scorpion4ik [409]3 years ago
4 0

Answer:

6

Step-by-step explanation:

i know for sure

if you want to know... well then ok

draw a diagram and put 12 and 30 on the outsides of each box than factor 12 and 30 put the numbers that they both have on each side in the middle circle and the rest on the big circles. Then multiply the numbers in the middle you get dun.. dun... dun...

6

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56

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What is the value of y in the parallelogram below?
vredina [299]
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If your starting salary is $40,000 and you  receive a 4.2% raise every year, how much  TOTAL money will you make in 15 years?
Oliga [24]
The first year, the amount is 40,000

the second year is 40000 + 4.2% of 40000, or 0.042 * 4000, so 40000+(0.042*4000)
common factoring that  we get 40000(1 + 0.042), or just 40000(1.042)

in short, the starting amount is 40000, and to get the next term's value you'd use the "common ratio" of 1.042, namely the multiplier of 1.042.

for the third year it'll be 40000(1.042) + (0.042 *40000(1.042) ), again, common factoring that

40000(1.042)(1 + 0.042) or 40000(1.042)(1.042) or 40000(1.042)²

therefore,

\bf \qquad \qquad \textit{sum of a finite geometric sequence}\\\\
S_n=\sum\limits_{i=1}^{n}\ a_1\cdot r^{i-1}\implies S_n=a_1\left( \cfrac{1-r^n}{1-r} \right)\quad 
\begin{cases}
n=n^{th}\ term\\
a_1=\textit{first term's value}\\
r=\textit{common ratio}\\
----------\\
a_1=40000\\
r=1.042\\
n=15
\end{cases}
\\\\\\
S_{15}=40000\left( \cfrac{1-1.042^{15}}{1-1.042} \right)\implies S_{15}\approx 40000\left( \cfrac{-0.8536}{-0.042} \right)
\\\\\\
S_{15}\approx 812951.42
5 0
3 years ago
Need help please answer !!!
DerKrebs [107]
I feel like it might be the second one
8 0
2 years ago
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