1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
MrRissso [65]
2 years ago
7

A chemist recorded the change in temperature of a cooling liquid as −25.5°f over a 1.5 minute period. the temperature fell at a

constant rate. what was the rate of change in temperature?
Mathematics
2 answers:
weqwewe [10]2 years ago
6 0

Answer:

<u>-17</u>

i took the quiz

sineoko [7]2 years ago
4 0
Rate of change <span>a </span>rate<span> that describes how one quantity </span>changes<span> in relation to another quantity. It is also called the slope. To calculate the rate of change in temperature, we use the expression:

Rate of change = change in temperature / change in time
</span>Rate of change = -25.5 / 1.5
Rate of change = -17 °C / min

The negative sign signifies a drop in temperature per minute.
You might be interested in
How can the order of operations be used to simplify expressions?
Lapatulllka [165]
Order of Operations, also known as PEMDAS (Parentheses, Exponents, Multiplication & Division, Addition & Subtraction), can help to simplify an equation by guiding you through the steps to solve it.

This is because it tells you to solve the parentheses. If there is none, but you've already done this, you solve for exponents, etc. 

The progressive soling of the equation not only makes it physically shorter, but also brings you closer to the answer.

Hope this helps, and I was the brainliest! :)

6 0
3 years ago
Làm ơn hãy giúp tôi <br> (a+b)²<br> (a-b)²
marysya [2.9K]

Answer:

(a + b) ^{2}  =  {a}^{2}  + 2ab +  {b}^{2}  \\ (a - b) ^{2}  =  {a {}^{2}  - 2ab +  {b}}^{2}

Step-by-step explanation:

hopethe answer helped you :)

8 0
2 years ago
Read 2 more answers
the perimeter of a rectangular painting is 356 centimeters. if the length of the painting is 96 centimeters, what is its width.
sladkih [1.3K]
P = 2(l + w)
p = 356
l = 96

356 = 2(96 + w)
356 = 192 + 2w
356 - 192 = 2w
164 = 2w
164/2 = w
82 = w

check....
p = 2(l + w)
356 = 2(96 + 82)
356 = 2(178)
356 = 356 (correct)

so the width (w) = 82 cm

5 0
3 years ago
Point P is the center of the circle below. What is the exact area
Ber [7]

Answer:

192π unit²

Step-by-step explanation:

Given that :

Radius = 24

Area of circle = πr²

Area = π*24²

Area = 576π in²

The Shaded area is 120°

Entire Circumference = 360°

Hence, shaded area = 120°/ 360° = 1/ 3 of the area

1/3 * 576π in²

= 192π unit²

5 0
2 years ago
Find the x-intercepts of the parabola with vertex (-4,2) and y-intercept (0,-30). Write your answer in this form: (x1, y1),(x2,
Ainat [17]
Vertex form of a parabola 
<span>y = a (x - h)^2 + k </span>

<span>where (h, k) is the vertex </span>
Substituting the values of h and k.
we get, 

<span>y = a(x + 4)^2 + 2 </span>

<span>substituting in the point (0, -30) for  x and  y
</span><span>-30 = a (0 + 4)^2 + 2 

</span>solve for a,

<span>-30 = 16 a + 2 </span>
<span>-32 = 16 a </span>
<span>-2 = a </span>

<span>y = -2(x + 4)^2 + 2 </span>

<span>Put y = 0 </span>

<span>-2 x^2 - 16 x - 30 = 0 </span>
<span>-2(x^2 + 8 x + 15) = 0 </span>
<span>x^2 + 8 x + 15 = 0 </span>
<span>(x + 3)(x + 5) = 0 </span>

<span>x = -3
x = -5</span>
3 0
2 years ago
Other questions:
  • suppose we want to choose 2 letters, without replacement, from the 5 letters A, B, C, D, and E (a) How many ways can this be don
    7·1 answer
  • Use DeMoivre's Theorem to find the following. Write your answer in<br> standard form.
    10·1 answer
  • What is the measure of arc QSR?
    9·2 answers
  • A UPS package was shipped to Shiela. The height is inches, the length is 1.5 feet, and the width is 14 inches. What is the volum
    7·2 answers
  • 9. How would you write 24 in roman numerals?<br> A. Viii<br> ОВ. XXIV<br> C. XVI<br> D. MD
    10·1 answer
  • Round to the nearest tenth 5.63
    13·2 answers
  • For brainiest:):):):):):):):):)
    11·1 answer
  • Can anyone help answer this thanks
    7·2 answers
  • The formula for average speed when traveling a distance of ddd over a time ttt is \dfrac dt t d ​ start fraction, d, divided by,
    6·1 answer
  • Which exponential function has the greatest average rate of change over the interval [ 0 , 2 ]
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!