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
34kurt
3 years ago
5

I need help ASAP please

Mathematics
2 answers:
Irina-Kira [14]3 years ago
8 0
The picture is to farrr
ICE Princess25 [194]3 years ago
5 0
Yes what do you need help with
You might be interested in
Use the information to answer the question.
Alona [7]

Answer:

13x^8 + 4x^5 - 16x^2 try this

Step-by-step explanation:

8 0
3 years ago
Decide if the following biconditional statement
garik1379 [7]

true because if you add up 4 90°you get 360

7 0
3 years ago
Read 2 more answers
Find the perimeter or circumference and area
Romashka [77]

Answer:

Step-by-step explanation:

The diameter is just the radius times two, so divide the diameter by two and you will have the radius of the circle.

4 0
3 years ago
How do you know when to use the less than symbol and when to use the less than or equal to symbol when writing an inequality for
xenn [34]

Answer:

This depends on the situation. For context, you use less than when your inequality CANNOT exceed more than.

You would use less than or equal to if your inequality can be equal to a number. Here's an example.

John needs to buy X oranges and Y apples. He can AT MOST buy 10 total fruits.

x + y (equal to or less than) 45

John needs to buy X oranges and Y apples. He CANNOT buy more than 10 total fruits.

x + y < 45

5 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
Other questions:
  • a proportion relationship is represented by the equation 2x equals 18 y. If y equals kx where K is the constant of proportionali
    14·1 answer
  • What is 3.2-0.3(x+3)=0.77
    8·2 answers
  • given the equation 3x − 4y = 8, which equation below would cause a consistent-dependent system? 3x 4y = −8 6x − 8y = 12 9x − 12y
    6·2 answers
  • THIS ISN’T A SCHOOL RELATED QUESTION!!
    5·2 answers
  • Five friends are going to share 1/2 of a pizza. How much of a whole pizza will each friend eat?
    14·2 answers
  • Factor the algebraic expression 21a + 9
    6·2 answers
  • Which of the following is a Prime Number? 9, 5,4 ​
    15·2 answers
  • Evaluate.<br><br> (2/3)^4<br><br> Enter your answer by filling in the boxes
    10·2 answers
  • Graph the inequality y&gt;2/3x-1
    8·1 answer
  • How would I solve I need to know Asap and what is the answer
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!