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
Mice21 [21]
2 years ago
13

Expand the expression ​ 7(10s-10)

Mathematics
1 answer:
Musya8 [376]2 years ago
5 0

Answer:

70s-70

Step-by-step explanation:

You might be interested in
A thermometer is taken from a room where the temperature is 24oc to the outdoors, where the temperature is −15oc. After one minu
kap26 [50]

Solution:

Use Newton's Law of Cooling.  


T = T_s + (T_0 - T_s)*e^(-kt)  


where  

T = temperature at any instant  

T_s = temperature of surroundings  

T_0 = original temperature  

t = elapsed time  

k = constant  


Now, we need to find this constant. We are given that after one hour, the temperature drops to 13° C in a 7°C Environment.  

T = 14, T_0 = 24, T_s = -15, t = 1, k = ?  

T = T_s + (T_0 - T_s)*e^(-kt)  

==> 14 = -15 + (24 - 7)*e^(-k)  

==> 14 = 7 + 17*e^(-k)  

==> 7 = 17*e^(-k)  

==> 7/13 = e^(-k)  

==> -k = ln(7/17)  

==> k = -ln(7/17) ≈ 0.774  

Now,


Let's calculate temperatures!  

T = ?, T_0 = 24, T_s = -15, k = 0.773, t = 3  

T = T_s + (T_0 - T_s)*e^(-kt)  

==> T = -15 + (24 –(-15))*e^[ -(0.774)(2) ]  

==> T = -15 + 39*e^(-1.548)  

==> T ≈ 15.72° C  

This the required answer.


7 0
3 years ago
Hello please help i’ll give brainliest
valkas [14]

Answer:

gravitational potential energy

Step-by-step explanation:

cuz its being lifted

7 0
2 years ago
A game at the state fair has a circular target with a radius of 10.7 cm on a square board measuring 30 cm on a side. Players win
Stells [14]

Answer:

The probability of hitting the circular area = P(H) = favorable area/ total area = Area of the circle / Area of the square

Step-by-step explanation:

= π/9

6 0
3 years ago
Which segment is longer, please explain ​
Molodets [167]

Answer:

Blue, if you look, they both are close, but due to the pathagrium theory blue is longer.

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
Help please and thank you
stiks02 [169]

First, we can see that there are four sides, and none of these equation contradict each other, so it is safe to say that <em>this is a quadrilateral</em>.

Second, all of the equations have the slope of <em>0 or undefined</em>, so it is a rectangle.

Lastly, the four points of intersection shows us that the side lengths are <em>3 and 5</em> units, so the area of it is 15 units².

7 0
3 years ago
Read 2 more answers
Other questions:
  • Write an expression to represent: Nine minus the quotient of two and a number x.
    10·2 answers
  • What is the value of [-12]?TIMED<br> A. -13<br> B. -12<br> C. 12<br> D. 13
    10·2 answers
  • Drag the tiles to the correct boxes to complete the pairs.
    9·1 answer
  • How man sides does a regular polygon have if each exterior angle measures 20?
    7·1 answer
  • What is the distance in between coordinate points -10 and 15 and 15 and 15
    8·2 answers
  • Solve the system of linear equations -3x+5=13 and x+4y=-10
    5·2 answers
  • How does (46)(4) = 56 please tell me
    11·2 answers
  • QUICK PLEASE HELP!!!<br> I’LL MARK BRAINLIEST!!!!
    9·2 answers
  • Calculate the perimeter of a triangle with the following measurements: 200 mm, 40 cm and 400 dm Please HELP
    15·1 answer
  • 20 4/8 + 19 7/9 + 15 3/36 =<br> also show how you got the answer
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!