Answer:
28 - 4n
Step-by-step explanation:
What is the recursive formula for this sequence? 24,20,16,12
the sequence first term is 24
a= 24
Common difference (d) = T2 - T1 = T3 - T2
d = 20-24 = 16 -20
d = -4
Formula for nth term
Tn = a + (n-1)d
Tn = 24 + (n -1)-4
Tn = 24 -4n + 4
Tn = 28 - 4n
= 28 - 4n
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Answer: y=6
Step-by-step explanation:
The given number is y.
According to the question,
Step 1 . subtracts three from the number (y-3), then doubles it
i.e. Final number = 2(y-3)
Step 2 . subtracts three again i.e. (2(y-3)-3), and doubles the number again
i.e. Final result = 2(2(y-3)-3)
If the result is his original number y, then
2(2(y-3)-3) =y
⇒ 2(2y-6-3)=y [ using distributive property]
⇒ 2(2y-9)=y
⇒ 2(2y)-2(9)=y [ using distributive property]
⇒ 4y -18=y
⇒ 4y -y= 18
⇒ 3y= 18
⇒ y= 6 [Divide both sides by 3]
Hence, y=6
Answer: 54-2y
Step-by-step explanation:
If x equals 18, you need to multiply 3 times 18. It would need to stay as an expression since they have different variables.
Answer:
39.59
Step-by-step explanation:
Because the image is two reflected triangles, the sides will be the same meaning ∆ AMC ≈ ∆ BMC must be true. M is also the same for both, due to it being the reflected side.
