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Alchen [17]
2 years ago
12

The temperature at 9:00pm one evening was 40 Fahrenheit. Over the next 4 hours the temperature dropped at n average rate of 3 pe

r hour. What was the temperature at 1:00am?
Mathematics
1 answer:
marysya [2.9K]2 years ago
8 0

Answer:

28 degrees Fahrenheit

Step-by-step explanation:

If the temperature at 9:00pm one evening was 40 Fahrenheit. And for the next 3 hour it dropped 3 degrees per hour then it would be

40 - 4 times 3 =

40 - ( 4 times 3 ) =

40 - 12 = 28 degrees Fahrenheit

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Consider the quadratic function that has x-intercepts of –1 and –7 and passes through the point (–2, –20). What is the value of
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-2+20 is 1 10 + 8 in the factored form
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I NEED A QUICK ANSWER I WILL GIVE YOU BRAINLIEST!!! If I drive 20 minutes a day for 185 days how many hours would that be?
slavikrds [6]
I think its about 62 hours because you multiply the 185 days by 20 minutes and get 3,700 so you divide that by 60 and get 61.6666667. so the answer is 62 hours?
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3 years ago
I need help on this question anything help
elixir [45]

Answer:

y = -3x - 1

Step-by-step explanation:

Look at your line. It's a downward trend which means your slope is negative

slope is the m in y = mx+b

Your b is your y intercept or where the graph touches the y = 0 vertical line.

It cross at -1 value

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4 0
2 years ago
Find perimeter of the figure thanks and round to the nearest hundredth
Gnom [1K]

Answer:

40.56

Step-by-step explanation:

you need the circumference of the cirle aka perimeter of circle so  8(pi) and then because its only half, divided by 2... 12.56

now you hgave circumference so add 12.56 to 28 and there you go. you can round how ever necessary

7 0
3 years ago
Read 2 more answers
Find all geometric sequences such that the sum of the first two terms is 24 and the sum of the first three terms is 26.
Serga [27]

Answer:

<h3>The nth term Tn = -8(-1/4)^(n-1) or Tn = 6(1/3)^(n-1) can be used to find all geometric sequences</h3>

Step-by-step explanation:

Let the first three terms be a/r, a, ar... where a is the first term and r is the common ratio of the geometric sequence.

If the sum of the first two term is 24, then a/r + a = 24...(1)

and the sum of the first three terms is 26.. then a/r+a+ar = 26...(2)

Substtituting equation 1 into 2 we have;

24+ar = 26

ar = 2

a = 2/r ...(3)

Substituting a = 2/r into equation 1 will give;

(2/r))/r+2/r = 24

2/r²+2/r = 24

(2+2r)/r² = 24

2+2r = 24r²

1+r = 12r²

12r²-r-1 = 0

12r²-4r+3r -1 = 0

4r(3r-1)+1(3r-1) = 0

(4r+1)(3r-1) = 0

r = -1/4 0r 1/3

Since a= 2/r then a = 2/(-1/4)or  a = 2/(1/3)

a = -8 or 6

All the geometric sequence can be found by simply knowing the formula for heir nth term. nth term of  a geometric sequence is expressed as

if r = -1/4 and a = -8

Tn = -8(-1/4)^(n-1)

if r = 1/3 and a = 6

Tn = 6(1/3)^(n-1)

The nth term of the sequence above can be used to find all the geometric sequence where n is the number of terms

6 0
3 years ago
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