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erik [133]
3 years ago
12

The high temperature on Friday was 8 degrees above zero. The low temperature was 3 degrees below zero. Which expression can find

the average temperature on Friday?
Mathematics
1 answer:
Andreas93 [3]3 years ago
8 0
(8 + (-3)) / 2
= (8 - 3) / 2
= 5 / 2
= 2 1/2 or 2.5
The average temp is 2.5 degrees above zero.
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The question is in the image below.
sineoko [7]

Answer:

The Recursive Formula for the sequence is:

\:a_n=\frac{1}{5}\left(a_{n-1}\right)     ; a₁ = 125

Hence, option D is correct.

Step-by-step explanation:

We know that a geometric sequence has a constant ratio 'r'.

The formula for the nth term of the geometric sequence is

a_n=a_1\cdot r^{n-1}

where

aₙ is the nth term of the sequence

a₁ is the first term of the sequence

r is the common ratio

We are given the explicit formula for the geometric sequence such as:

a_n=125\left(\frac{1}{5}\right)^{n-1}

comparing with the nth term of the sequence, we get

a₁ = 125

r = 1/5

Recursive Formula:

We already know that

  • a₁ = 125
  • r = 1/5

We know that each successive term in the geometric sequence is 'r' times the previous term where 'r' is the common ratio.

i.e.

a_n=ra_{n-1}

Thus, substituting r = 1/5

\:a_n=\frac{1}{5}\left(a_{n-1}\right)  

and a₁ = 125.

Therefore, the Recursive Formula for the sequence is:

\:a_n=\frac{1}{5}\left(a_{n-1}\right)     ; a₁ = 125

Hence, option D is correct.

3 0
3 years ago
Brainliest 4 whoever can tell me the correct answer to this question
Montano1993 [528]
If you explain what I’m doing I might be able to help
7 0
2 years ago
(a)Find an angle between 0° and 360° that is coterminal with 865° .
CaHeK987 [17]

<h3> Answer:</h3><h2>a.215</h2>

I don't know in letter b.

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7 0
2 years ago
WILL MARK BRAINLIEST IF YOU SOLVE THIS PLEASE
Setler79 [48]

Answer:

BC= 5

step by step explanation

3 0
2 years ago
Jami covered the lateral faces the
IgorLugansk [536]

Answer:

304

Step-by-step explanation:

find the area of each side, then add together

top and bottom are 10*8= 80 80*2= 160

front and back are 10*4=40  40*2=80

left and right sides are 8*4=32  32*2=64

160+80+64=304

5 0
2 years ago
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