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STatiana [176]
4 years ago
5

Least common multiple of 21, 51

Mathematics
1 answer:
hram777 [196]4 years ago
8 0
The LCM of 21 and 51 is 3
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What is the explicit formula for this sequence -7, -4, -1, 2, 5
Nataliya [291]

Answer:

\large\boxed{a_n=3n-10}

Step-by-step explanation:

It's an arithmetic sequence.

-4-(-7)=-4+7=3\\-1-(-4)=-1+4=3\\2-(-1)=2+1=3\\5-2=3

The difference is constant.

The explicit formula of an arithmetic sequence:

a_n=a_1+(n-1)d

Substitute:

a_1=-7,\ d=3

a_n=-7+(n-1)(3)          <em>use distributive property</em>

a_n=-7+3n-3\\\\a_n=3n+(-7-3)\\\\a_n=3n-10

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4 years ago
Which of the sentence is true?
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The graph of the circle is not a function

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3 years ago
Find three solutions of the equation y = 7x – 5.
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 y=7x-5 This is the same as saying y-7x = -5 Well easy. You just make up numbers that make this work. Let x be 1 y-7=-5 y=-5+7 y=2 So one ordered pair is (1,2) Let x=2 y-14=-5 y=9 So another ordered pair is (2,9) Let x=3 y-21=-5 y=-5+21 y=16 So another ordered pair is (3,16) 
hope it helps
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3 years ago
Leo bought a bulldozer for $63,103. The value of the bulldozer depreciated at a constant rate per year. The table below shows th
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Year 1
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5 0
4 years ago
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Can somebody please help answer this word problem using grass method? And showing how u get the answer thanks!!!
xxTIMURxx [149]

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Step-by-step explanation:

Fraction of total area mowed = (3/5) + (1/4) = 17/20

Therefore fraction of total area left = 1 - (17/20) = (20/20) - (17/20) = 3/20

8 0
2 years ago
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