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
horrorfan [7]
3 years ago
13

Can't figure out this problem help please :)

Mathematics
1 answer:
ratelena [41]3 years ago
8 0
You graph them as the same way you graph linear equation, y-int and then the slope.the first equation is greater than, so you'll draw a dashed line and shade the part that is greater. the second equation is less than or equal to, so you'll draw a solid line instead and shade the less part. and at the point the lines meet, you see the most shadest part. pick any order pair that is laid in that area
You might be interested in
The polygons in each pair are similar. Find the scale factor of the smaller figure to the larger figure
Cloud [144]

Answer:

1:2

Step-by-step explanation:

5 0
2 years ago
What is the next number in the sequence? 7, 16, 8, 27, 9,
katrin2010 [14]
30, 10
hope this helps
3 0
3 years ago
An object is heated to 100°. It is left to cool in a room that
stepladder [879]

Answer:

Step-by-step explanation:

Use Newton's Law of Cooling for this one.  It involves natural logs and being able to solve equations that require natural logs.  The formula is as follows:

T(t)=T_{1}+(T_{0}-T_{1})e^{kt} where

T(t) is the temp at time t

T₁ is the enviornmental temp

T₀ is the initial temp

k is the cooling constant which is different for everything, and

t is the time (here, it's in minutes)

If we are looking first for the temp after 20 minutes, we have to solve for the k value.  That's what we will do first, given the info that we have:

T(t) = 80

T₁ = 30

T₀ = 100

t = 5

k = ?

Filling in to solve for k:

80=30+(100-30)e^{5k} which simplifies to

50=70e^{5k} Divide both sides by 70 to get

\frac{50}{70}=e^{5k} and take the natural log of both sides:

ln(\frac{5}{7})=ln(e^{5k})

Since you're learning logs, I'm assuming that you know that a natural log and Euler's number, e, "undo" each other (just like taking the square root of something squared).  That gives us:

-.3364722366=5k

Divide both sides by 5 to get that

k = -.0672944473

Now that we have a value for k, we can sub that in to solve for T(20):

T(20)=30+(100-30)e^{-.0672944473(20)} which simplifies to

T(20)=30+70e^{-1.345888946}

On your calculator, raise e to that power and multiply that number by 70:

T(20)= 30 + 70(.260308205) and

T(20) = 30 + 18.22157435 so

T(20) = 48.2°

Now we can use that k value to find out when (time) the temp of the object cools to 35°:

T(t) = 35

T₁ = 30

T₀ = 100

k = -.0672944473

t = ?

35=30+100-30)e^{-.0672944473t} which simplifies to

5=70e^{-.0672944473t}

Now divide both sides by 70 and take the natural log of both sides:

ln(\frac{5}{70})=ln(e^{-.0672944473t}) which simplifies to

-2.63905733 = -.0672944473t

Divide to get

t = 39.2 minutes

3 0
3 years ago
The intersection of two planes can be a point true or false
sergij07 [2.7K]

Answer:

true

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
Help answer this question asap rn
andriy [413]
They most logical answer is A
6 0
2 years ago
Other questions:
  • to rent a certain meeting room, a college charges a reservation fee of $34 an an additional fee of $6.70 per hour. the chemistry
    5·1 answer
  • Write an exponential function for the set of points
    10·1 answer
  • D= 5, -2, 1 e= 1, 2 Multiply matrix D by matrix E. pleeeeaaasssee help me please please please
    7·1 answer
  • BRAINLIEST ASAP! PLEASE HELP ME :)<br> thanks!
    7·2 answers
  • Choose the correct answer below.
    8·1 answer
  • What is the fraction of students that are girls at the bar-b-que, there are 40 boys and 60 girls
    6·1 answer
  • The number of ice cubes in a drink and the temperature of the drink, what kind of association is that
    6·1 answer
  • Does 2,4,5 make a right triangle
    5·2 answers
  • 5x -4(x - 3) - 8 = Ax + B
    7·1 answer
  • Please help with photo below
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!