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MArishka [77]
3 years ago
13

The nth term of a sequence is 3n+4 explain why 21 is not a term of this sequence

Mathematics
1 answer:
Snowcat [4.5K]3 years ago
6 0

In this sequence, n can only be a natural number. So, if you plug in 5 for n, then you get 19. Also, if you plug in 6 for n, you get 24. Since no natural number can be replaced with n to get 21, it isn’t a term in the sequence

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Please solve...Thanks
liberstina [14]
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Perimeter=40ft

The perimeter of a rectangle is:

P=2l+2w

Since we know the length is 5 and the perimeter is 40, we can solve for the width.

P=2l+2w
40=2*(5)+2w
40=10+2w
subtract 10 from both sides
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divide both sides by 2
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Citrus2011 [14]

Answer:

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56.52cm^2 (using 3.14 for pi)

or

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Step-by-step explanation:

Area of a circle is pi times [radius squared].

All circles are 360°.

Problem can be solved by finding area of whole circle, and then using ratios.

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3 0
3 years ago
Can anyone solve this for me
emmainna [20.7K]

Answer:

(-2, -4.5)

Step-by-step explanation:

We can solve this equation with substitution.

x=2y+7

3x-2y=3

We can "substitute" 2y+7 for x into the second equation:

3(2y+7)-2y=3

Distribute the 3

6y+21-2y=3

Add like terms

4y+21=3

Subtract 21 from both sides

4y=-18

Divide both sides by 4 to isolate y

y=-4.5

Plug -4.5 back in for y:

x=2(-4.5)+7

x=-9+7

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(x,y)=(-2,-4.5)

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The answer is letter c, also just a tip, all i had to do was ask siri :)
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