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
torisob [31]
3 years ago
14

- A rectangular prism has how many flat surfaces?

Mathematics
1 answer:
Scrat [10]3 years ago
8 0

Answer:

it has 6 faces

Step-by-step explanation:

You might be interested in
Jeremy raised $250 for charity last year. This year he raised 20% more than he raised last year. How much money did Jeremy raise
Lesechka [4]
You would find this by doing 250 times 20% which is .2 and you would get 50 so you would add 250 plus 50 and get 300.
The answer is $300
5 0
3 years ago
Read 2 more answers
Show that the sum of two concave functions is concave. Is the product of two concave functions also concave?
spayn [35]

Answer with explanation:

Let us assume that the 2 functions are:

1) f(x)

2) g(x)

Now by definition of concave function we have the first derivative of the function should be strictly decreasing thus for the above 2 function we conclude that

\frac{d}{dx}\cdot f(x)

Now the sum of the 2 functions is shown below

y=f(x)+g(x)

Diffrentiating both sides with respect to 'x' we get

\frac{dy}{dx}=\frac{d}{dx}\cdot f(x)+\frac{d}{dx}\cdot g(x)\\\\

Since each term in the right of the above equation is negative thus we conclude that their sum is also negative thus

\frac{dy}{dx}

Thus the sum of the 2 functions is also a concave function.

Part 2)

The product of the 2 functions is shown below

h=f(x)\cdot g(x)

Diffrentiating both sides with respect to 'x' we get

h'=\frac{d}{dx}\cdot (f(x)\cdot g(x))\\\\h'=g(x)f'(x)+f(x)g'(x)

Now we can see the sign of the terms on the right hand side depend on the signs of the function's themselves hence we remain inconclusive about the sign of the product as a whole. Thus the product can be concave or convex.

8 0
3 years ago
3 (x - 3) + x (r + 4)
docker41 [41]

Answer:

Step-by-step explanation:

3(x-3)+x(r+4)

3x-9+xr+4x

7x+9+xr

7 0
3 years ago
Help pls asap<br><br><br><br>-2x(-3x - 4y - 8) =
xenn [34]
-2x*(-3x)-2x*(-4y)-2x*(-8)

answer :6x^2+8xy+16x
3 0
2 years ago
What is y-intercept of the graph
Kipish [7]

Answer:

  1a. y-intercept: 12

  1b. slope: -3/2

  1c. equation: y = -3/2x +12

  2a. y-intercept: -9

  2b. slope: 2

  2c. equation: y = 2x -9

Step-by-step explanation:

<h3>1.</h3>

A) We observe the pattern to be <em>x-values in the table increase by 2, while y-values in the table decrease by 3</em>. We notice the first x-value is 2, so extending the table upward to x=0 would tell us the y-intercept. That is, adding 3 to the first y-value will give the y-intercept as (x, y) = (0, 12).

B) We have already observed that the "rise" (change in y) is -3 for each "run" (change in x) of 2. The slope is the ratio of these changes:

  slope = m = rise/run = -3/2

C) From the above, we know that m=-3/2 and b=12. Putting these values into the equation for the line gives ...

 y = -3/2x +12

__

<h3>2.</h3>

A) We observe the pattern to be <em>y-values increase by 2 while x-values increase by 1</em>. As before, we can find the point that would go before the first one shown in the table. It will have an x-value of 0 and a y-value of -9.

  the y-intercept is -9

  the slope is 2/1 = 2

  the equation is y = 2x -9

7 0
2 years ago
Other questions:
  • Change the decimal 13/20 to a decimal<br><br> A. 0.65<br> B. 0.065<br> C. 0.15<br> D. 0.015
    12·2 answers
  • Can anyone help with my math problems because I need help and you need to be quick. I will mark brainliest.
    6·1 answer
  • Madison is carrying a 11.3 liter jug of sports drink that weighs 7 kg.
    6·1 answer
  • Please help.. with 6 &amp; 15 ​
    8·1 answer
  • Which is the exponential form of log3 x= 11?
    13·1 answer
  • The area of a rectangle is represented by x^2 - 5x - 14. what are the dimensions?
    10·1 answer
  • Four quarts are how many gallons?
    6·2 answers
  • Find the value of x and y.
    15·1 answer
  • Figure JKLM is a parallelogram. The measures of line segments MT and TK are shown.
    12·2 answers
  • Explain the error a student is asked to find when the value of an investment of $5200 is an account that earns 4.2% annual inter
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!