MATHEMATICS HIGH SCHOOL

!!NEED HELP!!The formula a subscript n = 10 - 4n describes an arithmetic sequence. What are the first four
terms in the sequence?

A)6, 2, -2,-6

B) 6,2,0,-2

C)10, 6, 2,-2

D)14, 18, 22, 26

Answers

Answer 1

Answer:

Answer:

A)6, 2, -2,-6

Step-by-step explanation:

a(n) = a +(n-1)d

a(n) = a +dn-d

a(n) = a-d + dn

a(n) = 10 - 4n

So d=-4

to get a: (a-d)=10

a=10-4=6

The first four terms:

a(1) = 6 +(1-1)-4=6

a(2) = 6 +(2-1)-4=2

a(3) = 6 +(3-1)-4=-2

a(4) = 6 +(4-1)-4=-6

it will be A

hope this helps

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What was Miguel's mistake if any?

Answers

Answer:

Step-by-step explanation:

According to my answer, he shound have computed 2^3 which is 8 and suibstract that from four getting four, then multiplying it by tow to get eight so it should be 4 so Miguel made no mistakes.Since he was doing the order of operations for each step of the equation.

Answer:

C. Miguel incorrectly multiplied before dividing in step 3.

Step-by-step explanation:

32 ÷ 2(2³ - 4)

Solving parenthesis and exponent.

32 ÷ 2(8 - 4)

32 ÷ 2(4)

The division is first, then multiplication.

32/2 (4)

16(4)

= 64

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