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brilliants [131]
3 years ago
15

D(n) = -5 (1/2)n-1 What is the 3rd term in the sequence?

Mathematics
2 answers:
Ierofanga [76]3 years ago
8 0

Answer:

-5/4

Step-by-step explanation:

1. This is an explicit formula

All we have to do is plug n = 3 in the formula to find the 3rd term.

2. d(3)=-5(1/2)3-1

= -5/4

jonny [76]3 years ago
3 0

Answer:

-5

Step-by-step explanation:

dₙ = -5 (1/2)n-1

the 3rd term in the sequence means n = 3

d₃ = -5(1/2)(3-1) = -5(1/2)(2) = -5

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During a school event, there were 8 times as many pupils as teachers and there were three times as many boys as girls. There wer
Lilit [14]
We know that pupils are students

Students = S
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So....

S = 8T
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Since there is 8x students than teachers, I did Boys = 6x and girls = 2x

I'm going to use this next: S = 8T

8x = 8(B -70)

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Answer = 126.
3 0
2 years ago
What is tbe best approximation for the circumference of a corcle with a diameter of 400 inches use 3.14 to approximate pi
alexandr402 [8]

Answer:

1256 inches

Step-by-step explanation:

The circumference of a circle is denoted by the formula: C = πd, where d is the diameter.

Here, the diameter is 400 inches, so plug that in:

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The answer is 1256 inches.

3 0
3 years ago
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In the equation: y=3x, what is the 3 called?
ira [324]

3 is the Coefficient in the following expression.

6 0
2 years ago
Simplify: (x − 7)(6x − 3)
dolphi86 [110]

Answer:

-39x+21

Step-by-step explanation:

F: 6x

O: -3x

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L: 21

6x-3x-42x+21= -39x+21

8 0
3 years ago
if you are adding two fractions that are both greater than 1/2 what must be true about the sum? Give three examples to support y
Sunny_sXe [5.5K]

Answer:

If you are adding to fractions that are both greater than 1/2, the sum will be greater than 1.

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Since both fractions are greater, obviously the sum will too.

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Hope this helps

6 0
3 years ago
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