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ycow [4]
3 years ago
14

What is the sum of the first 14 terms of the sequence an = 6n -12

Mathematics
1 answer:
mina [271]3 years ago
6 0
When n = 1  first term  = -6 
n = 2  second term =  0
n = 3 third term = 6

n = 4 4th term = 12

so we have an Arithmetic sequence  first term = -6 and common difference = 6

Sum 14 terms  =  (14/2)[2*-6 + (14-1)*6]

 =  462  answer
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Find h(2/3) if h(x) = 6x <br><br> 2 4 6 8
arlik [135]
H(x) = 6x     

it gives you what x is so plug that in the equation to find it.

h(2/3) = 6(2/3)
h(2/3) = 6 × 2 ÷ 3
h(2/3) = 12 ÷ 3
h(2/3) = 4

so your answer is 4.

hope this helps, God bless!
7 0
3 years ago
What is 3-2y+(-8y)+8.4 as a simplified expression
IRISSAK [1]

Answer:

-10y + 11.4

I hope this helps you out

7 0
3 years ago
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Please help please ​
jarptica [38.1K]

Answer:

1.) supplementary  m<1+m<2=180 and m<2+m<3=180

2.) congruent, supplementary

Step-by-step explanation:

the answers are in this order above

5 0
3 years ago
Desperate need for help!<br> Maths!<br> Will award brainliest!
stealth61 [152]

Step-by-step explanation:

fg(x) =

{(x - 4)}^{2}  + 3(x - 4)

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4 0
3 years ago
Anyone know how to do these?
erastovalidia [21]

Answer:

B. 1/m¹⁸

Step-by-step explanation:

To simplify the equation, we start with the values inside the brackets.

Therefore  m⁻¹m⁵ results to m⁴.

This is because the sign between the m⁻¹ and m⁵ is multiplication, and when multiplying figures that have a similar base, we add the indices.

that is, -1+5=4

then we divide m⁴ by m⁻², that is, m⁴/m⁻²=m⁶

To divide figures that have the same base we subtract the powers.

That is, 4-(-2)=6

the resulting expression from inside the brackets will be (m⁶)³ which results to m⁻¹⁸ which is the same as 1/m¹⁸

3 0
3 years ago
Read 2 more answers
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