Kelly is recording the temperature of a cooling chemical. Using the table, determine the initial
temperature of the chemical when she poured into the beaker.
Answers
Answer:
Initial temperature of the chemical = 97°
Step-by-step explanation:
Time Temperature Difference
4 89.5 -
10 78.25 78.25 - 89.5 = -11.25
16 67.00 67 - 78.25 = -11.25
There is a common difference of -11.25 in each successive term.
Therefore, cooling of a chemical represents a linear function.
Let the function representing temperature is,
f(t) = at + b
Where 'a' = rate of change in temperature
b = initial temperature
t = time
Now 'a' = [tex]\frac{y_2-y_1}{x_2-x_1}[/tex] = [tex]\frac{78.25-89.5}{10-4}[/tex]
a = -1.875
f(t) = -1.875t + b
For t = 4 and f(t) = 89.50,
89.50 = -1.875(4) + b
b = 97
Therefore, function representing the cooling of chemical is,
f(t) = -1.875t + 97
And the initial temperature of the chemical was 97° when it was poured into the beaker.
Related Questions
Dhhdjddjjdksksjs HELPP HELP ME
Answers
Answer:
A 16
Step-by-step explanation:
I have no explanation, I just don't want to write it out
What is the sum of 7x4+ 2xy - 5y3 and 2x4 + 3xy + 2y3?
Answers
Answer:
7x^4+2xy-5y^3 +2x^4+3xy+2y^3 = 9x^4+5xy-3y^3
Kathy earns $6.50 per hour at her baby-sitting job. On Sunday she worked 7 hours. What were her total earnings for the day?
Answers
may you please help me?
Answers
Answer:
c
Step-by-step explanation:
the awnser is 165 but c is closest
round 0.0695712 to 2 significant figures
Answers
0.070 is rounded to 2 significant figures
Answer:
0.070
Step-by-step explanation:
1 question only (find the area)
Answers
Answer:
I think it's 90?
Step-by-step explanation:
Enrique took his brother out
to dinner to celebrate. He
decided to leave a 25% tip
because the service was
excellent. The tip was
$18.10. How much was the
original bill?
Answers
Answer:
72.4$
Step-by-step explanation:
We can use cross multiplication here
[tex]\frac{18.10}{originalbill} = \frac{25}{100}[/tex]
18.10 x 100 = 25 x original bill
1810 = 25 x original bill
72.4 = original bill
This recipe makes three portions of soup.
Navina follows this recipe but only wants to make enough for one portion of soup.
How much of each ingredient does she need?
Recipe: Serves 3
180 g onions
120 g carrots
3 tablespoons of oil
600 g tomatoes
1.2 l vegetable stock
Answers
Answer:
Divide each ingredient by 3
Step-by-step explanation:
180 / 3 = 60g onions
120 / 3 = 40g carrots
1 tablespoon of oil
200 g tomatoes
0.4 vegetable stock.
Hope this helps!
Answer:
60g onions
40g carrots
1 tablepoon of oil
200g tomatoes
0.4 vegetable stock
Step-by-step explanation:
The cost for x gallons of heating oil can be represented by the function f(x)=4x+6. In the context of the problem, explain the meaning of the following statement
Answers
Answer:
just find the question on brainly https://brainly.com/question/13392057
Step-by-step explanation:
.
a box contains 16 cards bearing numbers 1 2 3 4...... 15 16 respectively a card is drawn at random from a box what is the probability that the number on the card is 1.an odd number 2. prime number 3.number divisible by 3 .4.number not divisible by 4
Answers
Answer:
9/16
6/16
10/16
8/16
Step-by-step explanation:
write in standard form 7,200 divided by 100
Answers
Answer:
72
Step-by-step explanation:
just take off two zeros
Answer:
Step-by-step explanation:the answer isis currently 72
Help me please !!!!!
Answers
Pat purchases 2.5 pounds of jellybeans at $0.98 per pound. What was his change from $10.00? Explain your answer
Answers
Answer:
6.52
Step-by-step explanation:
10-3.48=6.52
10-(2.5+0.98)
Help I will give Brainliest!!
Answers
Answer:
Step-by-step explanation:
3
I will give you 10 points
Answers
Step-by-step explanation:
if those lines are parallel to each other
then 9 is equal to 11 so 11 is 112°
Solve for x
A) 6
C) 3
B) -9
D) 5
Answers
What is the distance between (4, 7) and (2,2)?
Answers
let's see what to do buddy...
To find the distance between two points, we have the following relation, which is derived from the Pythagorean relation, and we do not need to prove it :
a = ( 2 , 2 ) and b = ( 4 , 7 )
[tex]d = \sqrt{ ( \: {y(b) - y(a)} \: )^{2} + ( \: {x(b) - x(a)} \: )^{2} } \\ [/tex]
Now just put the coordinates in the equation :
[tex]d = \sqrt{ ({7 - 2})^{2} + ({4 - 2})^{2} } \\ \: \: \: d = \sqrt{ {5}^{2} + {2}^{2} } \\ d = \sqrt{25 + 4} \\ d = \sqrt{29} [/tex]
So the distance between them equal :
[tex] \sqrt{29} [/tex]
And we're done buddy.
Thanks for watching good luck ♥️♥️♥️♥️♥️.
find the absolute value of -1/2
Answers
Answer:
1/2
Step-by-step explanation:
The absoulte value of any numeber is itself, but positive. So, a negative number becomes a positive number.
Answer:
The absolute value of -1/2 is 1/2 because 1/2 is the opposite of -1/2.
−2x − 10y = 10 D: {−10, −5, 0, 5}
A. x=-10
B. x=-5
C. x=0
D. x=5
Answers
Answer:
the value of X Will be 0
hope like the answer
Jolene has 30 days to prepare for a
bicycle race. She will bicycle 15 miles
each day. How many miles will
Jolene have bicycled during her
training?
Answers
Answer:
450 miles in total during her training
Step-by-step explanation:
Since it does say she has 30 days to train and she said she will ride her bike 15 miles everyday she trains so she will have ridden her bike for 450 miles in total
30 days to train x 15 miles per day = 450 miles in total
I WILL GIVE YOU BRAINLIEST ,5 STARS⭐, AND THANKS❤️. (P.S. AT LEAST TWO PEOPLE GIVE ANSWER SO I CAN GIVE BRAINLIEST)
Answers
Answer:
0.002
Step-by-step explanation:
cuz
Alice kicks a 0.25 kg soccer ball with 0.5 N of force. What force does the ball exert on Alice’s foot as she kicks it?
Answers
Answer:
0.5
Step-by-step explanation:
Answer:
its 0.5 hope this helped
Step-by-step explanation:
dont be shy give me the answer now
Answers
Answer:
n=14m
Step-by-step explanation:
or n=6m
Simplify the expression below
6x3 + 5x2 + 3 – 4 (33 – 3x² + 2)
use^ in your answer to indicate a number raised.
Example: x^2 means x2
о 2x3 + 17x2 - 1
0
2x3 + 1722 - 5
7x3 + 1782 +5
O 7x3 + 17x2 - 7
Answers
Answer:
2x^3 + 17x^2 - 5Step-by-step explanation:
Simplify:
6x^3 + 5x^2 + 3 - 4 (x^3 - 3x^2 + 2) =6x^3 + 5x^2 + 3 - 4x^3 + 12x^2 - 8 =(6x^3 - 4x^3) + (5x^2 + 12x^2) + (3 - 8) =2x^3 + 17x^2 - 5Option B or second option is correct
Note. there is typo both in the question and the answer options
2x³ + 17x² - 5
Step-by-step explanation:Hi there !
6x³ + 5x² + 3 – 4 (x³ – 3x² + 2) =
= 6x³ + 5x² + 3 - 4x³ + 12x² - 8
= 6x³ - 4x³ + 5x² + 12x² + 3 - 8
= 2x³ + 17x² - 5
Good luck !
1.
Amanda's bank pays a simple interest rate of 0.125% per month for every deposit made to her
personal savings account. If she deposits $250 at the start of each month, how many dollars will
she have in her savings account at the end of the third month?
Answers
what are the 4 different ratios of 48:16
Answers
Answer:
48:16, 48 to 16, 48,16, 48/16
Step-by-step explanation:
different forms of ratios
PLEASE HELP I AM BEING TIMED!!
How many was can the angle be named?
Answers
Answer:
3
Step-by-step explanation:
Answer:
2
Step-by-step explanation:
GFE
EFG
I'm not sure, but I hope this helps in some way!
f(x) = 6x
f(1) =
Help help help
Answers
Answer:
f(1) = 6
Step-by-step explanation:
Step 1: Define
f(x) = 6x
f(1) is x = 1
Step 2: Substitute and Evaluate
f(1) = 6(1)
f(1) = 6
WILL MARK YOU BRAINLIEST NO GUESSES PLZ!!!!!
Answers
Answer:
56 degrees
Step-by-step explanation:
x+15 + x + 2x+1 = 180 (triangle angle sum theorem)
4x+ 16 = 180
4x= 164
x= 41
<C = x+15
x+ 41, so
41+ 15=
x+ 56
on friday,65% of the students at plainview middle school bought a hot lunch and the rest of the students who can be the first and if you don´y know the answer please don´t answer it