In order to evaluate energy demand for heating services, the number of heating degree days are calculated. The number of heating degree days can be calculated by the formula H = 65 - T, where 65 is degrees Fahrenheit, and T is the average of the high and low temperatures for the day. If the high temperature for a day was 52°F and the low temperature for the same day was 45°F, what is the number of heating degree days?

Answers

Answer 1

Answer:

The number of heating degree days is 16.5.

Step-by-step explanation:

First, we calculate the average of the high ([tex]T_{H}[/tex]) and low temperatures of the day ([tex]T_{L}[/tex]), measured in degrees Fahrenheit. If we know that [tex]T_{H} = 52\,^{\circ}F[/tex] and [tex]T_{L} = 45\,^{\circ}F[/tex], then the average temperature ([tex]T[/tex]), measured in degrees Fahrenheit, is:

[tex]T = \frac{T_{L}+T_{H}}{2}[/tex] (1)

[tex]T = \frac{45\,^{\circ}F+52\,^{\circ}F}{2}[/tex]

[tex]T = 48.5\,^{\circ}F[/tex]

And the number of heating days is:

[tex]H = 65-48.5[/tex]

[tex]H = 16.5[/tex]

The number of heating degree days is 16.5.


Related Questions

I’ll mark you brainlist

Answers

Answer:

negative

Step-by-step explanation:

Answer:

Negative

Step-by-step explanation:

The line is going down, which means that it is decreasing...which makes it negative.

Hope this helps! :)

#1- 2 is what percent of 16 #2- 15 is what percent of 80 #3- 38 is what percent of 200

Answers

Answer:

#1 .   12.5%

#2.   18.75%

#3.   19%

Step-by-step explanation:

2  / 16  x 100% = 12.5%

15 / 80  x 100% = 18.75

38 /200  x 100%= 19%

In one day, 72 people take group tennis lessons at Cherry Hills Country Club. The club provides 9 lessons each day. If an average of 120 tennis balls are used in each lesson, determine the average number of tennis balls used per person per lesson

Answers

Answer ;

13

Step-by-step explanation:

Find the 14th term of the geometric sequence 7, 28, 112,

Answers

Answer:

a(14)=469762048

Step-by-step explanation:

geometric sequence= a(n)=a*r^(n-1)

  we have:

  a=7

  r=28/7=4

So:

  a(14)=7*4^(14-1)

         =7*4^(13)

          =469762048

hope this helps

BRAINLEST+THANKS!!
Thank uu

Answers

Answer:

hiiii

the question isn't seen clearly

If triangle ABC has the following angle measurements, find the value of Angle A, Angle B, and Angle C.
∠A=4x − 17


∠B= 3x + 8


∠C= x + 13

Answers

Answer:

b

Step-by-step explanation:

Answer:

Step-by-step explanation:

4x - 17 + 3x + 8 + x + 13 = 180

8x + 4 = 180

8x = 176

x = 22

<A = 4x - 17

<A = 4*22 - 17

<A = 88 - 17

<A = 71

============

<B = 3x + 8

<B = 3*22 + 8

<B = 66 + 8

<B = 74

============

<C = x + 13

<C = 22 + 13

<C = 35

A B and C add to 180 as they should.

I'm sorry, that's all I can do.    No time.

Would it be correct to name any of the angles

Answers

Answer:

well 1 is JMK and 2 is KML

Step-by-step explanation:

I'm not sure what you mean by your question.

Skye ran rlaps today at soccer practice. Nadine ran five fewer laps than Skye. If Nadine ran eight laps at practice, which of the following equations could be used to find how many laps Skye ran?
r-5= 8
r+5 = 8
r=8-5
-5r=8

Answers

Answer:

A. r - 5 = 8

Step-by-step explanation:

If Nadine ran 5 fewer laps than Skye, and Nadine ran eight laps, "r" equals 13.

Which equation, in slope-intercept form, passes through (–2, 4) and has a
slope of 3?

F. y = 3x - 2
G. y = 3x + 10
H. y = 3x - 10
I. y = 3x +2

Answers

Answer:

y=3x+10

Step-by-step explanation:

First, put the equation into point-slope form.

y-y1=m(x-x1)

y-4=3(x+2)

Next, distribute 3 to (x+2) and simplify.

y-4=3x+6

y=3x+10

help will get brailiest and lots of points

Answers

Answer:(all negative) 14 13 12 11 10

Step-by-step explanation: sall good

Answer: the domain and range are undefined. The function is continuous.

Step-by-step explanation:

Google

5.6/2^3+(12.75+7.45)

Answers

Answer: 20.9

Step-by-step explanation:

On the screenshot below

Answer:

20.9 or 209 over 10 or 20 and 9 over 10

Step-by-step explanation:

I need help plss help me

Answers

Answer:

c

Step-by-step explanation:

Answer:

c

Step-by-step explanation:

I agree with him why is there a certain amount of words you have to put in your answer so you can send it

Patty has 817 marbles. She gave away 529 of her marbles. How many marbles doe she have left? 312 marbles, 298 marbles, or 288 marbles.​

Answers

Answer:

288 because you just subtract 529 from 817

Step-by-step explanation:

Last year 858 people attended the Middleton County Fair. This year 1,635 people attended. What was the percent increase from last year to this year? (Round to the nearest percent)

Answers

Answer:

91%

Step-by-step explanation:

The first step is to calculate the increase

= 1635-858

= 777

Therefore the percent increase can be calculated as follows

= 777/858 × 100

= 0.905× 100

= 90.5 %

= 91%

Hence the percentage increase is 91%

Help !!! will give points

Answers

Answer:

bruh what grade r u in 7th? i mean that in a mean way btw i j remember learning abt this and i know what grade i was in

Step-by-step explanation:

ok the bigger triangles third degree thingy (angle...wow) would be 60 bc 50 +70 is 120. 180-120 = 60 yeah yeah yeah

the smaller ones 3rd degree whatever its called... is 50

the bigger triangle is sarahs and the smaller triangle is kristins so A is wrong. b is wrong i think c is wrong so d it is...

BRAINLIEST!!!

STAY SAFE! C O V I D - 1 9 IS REAL!!! IT COULD MEAN YOUR LIFE!!!!!

Which expression is a sum of a number and a product?
A. 3 + 5x
B. 5 + x - 3
C. 5(x - 3)
D. 5x​

Answers

Answer:

its a. rhejhdhrhrjdhr

CDE is an obtuse angle. Which of the following could be its measure?​

Answers

Answer:

Anything between 90 and 180, excluding 90 and 180.

Step-by-step explanation:

INFO

can i get help on these

Answers

Answer:

a) [tex]\frac{32}{21}[/tex]

b) -14

c) -3

d) -96

Step-by-step explanation:

a) The parenthesis indicate multiplication.

b) Minus and plus gives subtraction, and the sign you put behind the number is the sign of the largest number you have (in this case it's 21 since we ignore the -)

c) They already have common denominators, all that's left is to do [tex]\frac{-7 -2}{3} = \frac{-9}{3} = -3[/tex]

d) The parenthesis indicate multiplication.

Good luck!

What is the inverse operation of 2/3x=6

Answers

2 3 x - 6

Since g(f(x))=x g ( f ( x ) ) = x , f−1(x)=3x2+9 f - 1 ( x ) = 3 x 2 + 9 is the inverse of f(x)=23x−6 f ( x ) = 2 3 x - 6

pls brain

Danae is choosing between two jobs. One job pays an annual bonus of $1,500 plus $120 per day worked. The second job pays a annual bonus of $2,500 plus $100 per day worked.
120d + 1,500=100d+ 2,500
d=100
How much will Danae have earned on day 100 at either job?
A: 12,000
B:12,500
C:13,500
D:14,500

Answers

Answer:

It is both B and C, you simply just have to add 2 zeros behind both pays per day and then add the bonus

Answer:

The kid above me is wrong, it's C on edge

Step-by-step explanation:

nearly got it Wrong on Edge

john has a goal to ride his bike 100 miles this summer. john has ridden 12 miles thus far. there are 40 days left of the summer. what average number of miles john must ride per day to reach his goal?

Answers

Answer:

2.2

Step-by-step explanation:

100 is his goal, minus what he already did, which is 12, you get 88. Divide 88 with the number of days remaining and then you get the answer.

Answer:

2 1/5 or 2.2 miles per day

Step-by-step explanation:

(100 - 12) / 40 = 2 1/5 or 2.2 miles per day

The table shows the heights and the lengths of several rectangles.
Height (in.) 41 70 21 34 10 92 54 24 10 35 42 66
Length (in.) 21 25 32 12 16 45 40 23 45 35 21 14
What does the correlation coefficient for the data indicate about the strength of the linear
association between the height and the length of these rectangles?
A Weak negative correlation
B Strong negative correlation
C Weak positive correlation
D Strong positive correlation

PLEASE HELP
ILL GIVE BRAINIEST

Answers

Answer:

Weak Positive Correlation

Step-by-step explanation: I think that’s correct not 100 percent sure

The strength of the linear association between the height and the length of these rectangles is option A. Weak negative correlation.

What is a Weak negative correlation?

In this, the both variables should be response to one another here the relationship is not so strong.

So the  correlation coefficient for the data  that represent the linear relationship between the height and length should be weak

hence, the option a is correct.

Learn more about correlation here: https://brainly.com/question/1564293

can i get some help

Answers

Answer:x = -0.1290322581

Step-by-step explanation:

Simplifying

9x + -4(1 + 10x) = 0

9x + (1 * -4 + 10x * -4) = 0

9x + (-4 + -40x) = 0

Reorder the terms:

-4 + 9x + -40x = 0

Combine like terms: 9x + -40x = -31x

-4 + -31x = 0

Solving

-4 + -31x = 0

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '4' to each side of the equation.

-4 + 4 + -31x = 0 + 4

Combine like terms: -4 + 4 = 0

0 + -31x = 0 + 4

-31x = 0 + 4

Combine like terms: 0 + 4 = 4

-31x = 4

Divide each side by '-31'.

x = -0.1290322581

Simplifying

The length of time of the school field day was decreased
from 100 minutes to 80 minutes. What is the percent
decrease in length of time of the school field day?

Answers

18% because take the first digits of each number and put them together lol

I need to know what this is plz help

Answers

X is greater than or equal to -5 (that’s the problem)

(-4, -3, -2, -1, 0, 1, 2, ♾)- all of them are greater than -5.

Please complete the chart if needed.Will make brainliest!

Answers

Answer:

2+3=5

4+5=9

2+1=3

2+5=7

an even number plus an odd number will be a an odd number because your always going to have an unequal amount when using an odd number and a even number

help please 7th grade math

Answers

Answer:chopped almonds and white sugar are correct

PLS GIVE BRAINLIEST

Alexander is a stockbroker he earns 11% commission each week last week he sold $7000 worth of stocks how much did he make last week in commission if he averages the same amount each week how much did he make in commission in 2011

Answers

Answer:

the amount that he makes last week and in the year 2011 is $770 and $40,040 respectively

Step-by-step explanation:

The computation of the amount that he makes last week and in the year 2011 is as follows:

= Sale value of the stocks × earning percentage × number of weeks in a year

= $7,000 × 11% × 52 weeks

= $40,040

hence, the amount that he makes last week and in the year 2011 is $770 and $40,040 respectively

We simply applied the above formula so that the correct value could come

And, the same is to be considered

Can somebody please help me?

Answers

Answer:

D

Step-by-step explanation:

Answer:

C

Step-by-step explanation:

a trinomial is a math equation that has three terms which are connected by plus or minus notations. An example of trinomial is 6x squared + 3x + 5.

Is the relation a function? {(3,4), (5,0), (2,4), (-5,-5)}

Answers

Answer:

Yes

Step-by-step explanation:

You are using the x values once, so it will pass the vertical line test.

{(3,4), (5,0), (2,4), (-5,-5)} the relation is a function.

What is a function?

A relation is a function if it has only One y-value for each x-value.

The relation is {(3,4), (5,0), (2,4), (-5,-5)}

Relation on a set may, or may not, hold between two given set members.

Three comma four comma five comma zero two comma four comma minus five comma minus five.

{(3,4), (5,0), (2,4), (-5,-5)} the relation is a function, because in (x,y) the x terms are not repeated.

For every y value there is a unique x value.

Hence, {(3,4), (5,0), (2,4), (-5,-5)} the relation is a function.

To learn more on Functions click:

https://brainly.com/question/21145944

#SPJ2

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