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
cestrela7 [59]
1 year ago
9

Find the perimeter.

Mathematics
2 answers:
lesya [120]1 year ago
5 0

Answer:

21

Step-by-step explanation:

Its a 3 by 7 rectangle so when you multiply using formula BH you get 21 (3*7=21)

zzz [600]1 year ago
5 0

Answer:

Perimeter = 20 units

Step-by-step explanation:

In the image the area and the perimeter are requested but you ask only for the perimeter.

Then:

The figure measures 3 units in height and 7 units in length
So the perimeter measures:

P=2(height)+2(large)=2(3)+2(7)=6+14=20

Hope this helps

You might be interested in
Given f(x) = 9x + 1 and g(x) = x°, choose
svlad2 [7]

Answer: (f times g)(x)=(9x+1) times x³=9x⁴+x³

Step-by-step explanation:

5 0
3 years ago
Which of the following reasons is NOT A function
slamgirl [31]
D is not a function
5 0
3 years ago
Find the value of x in each case:
kipiarov [429]
X = 69o
2x + 42 = 180
=> x = 69
5 0
3 years ago
Find the general solution to the differential equation modeling how a person learns:
Luda [366]

Here we want to solve differential equations, we will see that the general solution is:

y = A*e^{-t} + 100

We want to solve the differential equation:

\frac{dy}{dt}  = 100 - y

From this is pretty clear that y is an exponential function, with an exponent of -1*t.

We can write it generally as:

y = A*e^{-t} + B\\\\\frac{dy}{dt}  = -A*e^{-t}

Then if we set B = 100 we get:

y = A*e^{-t} + 100\\\\\frac{dy}{dt}  = -A*e^{-t} \\\\\frac{dy}{dt}  = -A*e^{-t} - 100 + 100 = -y + 100

So we just found the general form of the function.

Now we have two cases:

A) y(0) = 35

y(0) = A*e^{-0} + 100  = 35\\=  A + 100 = 35\\\\A = 35 - 100 = -65

In this case, the function is:

y = -65*e^{-t} + 100

B) y(0) = 125

125 = A*e^0 + 100\\\\\125 - 100 = A\\\\25 = A

In this case, the function is:

y = 25*e^{-t} + 100

Now we want to see which one of the two can represent how a person learns. Just look at the graph below:

The green line is the one for y(0) = 35, and the blue one is for y(0) = 125.

Notice that for small values of t, the blue function is really large, thus it can't really model how a person learns (is larger for smaller values of t than for larger values).

So y(0) = 35 represents better how a <em>person can learn</em> (but not exactly, because you can see that it eventually becomes almost constant, which is something that really does not happen) so the correct option is <u>D: none of the above.</u>

If you want to learn more, you can read:

brainly.com/question/353770

3 0
2 years ago
Evaluate plzzz help am giving brainliest
zhannawk [14.2K]
The answer to the question is 215
4 0
3 years ago
Other questions:
  • Multiply.<br> (x + 7)(3x - 2)<br><br> ( please answer with <br> A. <br> B.<br> C.<br> D.
    9·2 answers
  • Latoya earns $25.05 for 3 hours of tutoring. How much money does latoya earn each hour?
    7·1 answer
  • How do you solve -3(2/5x-2)=18
    14·1 answer
  • I don't know if I'm doing this right but can you help on ' explain your method for doing this' i don't know how I did it I just
    5·1 answer
  • The table shows how the height of a stack of dvds depends on the number of dvds.what is the rule for the height
    10·2 answers
  • Write an inequality equation equivalent to 3x – 4y = 8?
    14·1 answer
  • The force f of an object is calculated by multiplying its mass m with acceleration a. Rearrange the formula f = ma to make mass
    9·1 answer
  • What is the answer?​
    9·1 answer
  • Use the distributive property to write an experssion that is equalent to 7(3x-4)
    9·2 answers
  • Can somebody solve this?
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!