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
worty [1.4K]
3 years ago
14

Given f (x) = 2x+3 and g(x) = 4x + 3, find each of the following. b. f(4) = a. g(-2)=

Mathematics
1 answer:
olga nikolaevna [1]3 years ago
8 0

Answer:

Step-by-step explanation:

dn3edhb3rbrjfnfjbhghrbhjbrhhb fh3hfnhbjnjhbjffjhnj3 njn

You might be interested in
Hi guys. I have a problem with Mathematics. The topic is set.If A= {x:2
Rina8888 [55]
234 Lyme and net Emma d t t. T t goo
3 0
2 years ago
An area is approximated to be 14 in 2 using a left-endpoint rectangle approximation method. A right- endpoint approximation of t
USPshnik [31]
The trapezoidal approximation will be the average of the left- and right-endpoint approximations.

Let's consider a simple example of estimating the value of a general definite integral,

\displaystyle\int_a^bf(x)\,\mathrm dx

Split up the interval [a,b] into n equal subintervals,

[x_0,x_1]\cup[x_1,x_2]\cup\cdots\cup[x_{n-2},x_{n-1}]\cup[x_{n-1},x_n]

where a=x_0 and b=x_n. Each subinterval has measure (width) \dfrac{a-b}n.

Now denote the left- and right-endpoint approximations by L and R, respectively. The left-endpoint approximation consists of rectangles whose heights are determined by the left-endpoints of each subinterval. These are \{x_0,x_1,\cdots,x_{n-1}\}. Meanwhile, the right-endpoint approximation involves rectangles with heights determined by the right endpoints, \{x_1,x_2,\cdots,x_n\}.

So, you have

L=\dfrac{b-a}n\left(f(x_0)+f(x_1)+\cdots+f(x_{n-2})+f(x_{n-1})\right)
R=\dfrac{b-a}n\left(f(x_1)+f(x_2)+\cdots+f(x_{n-1})+f(x_n)\right)

Now let T denote the trapezoidal approximation. The area of each trapezoidal subdivision is given by the product of each subinterval's width and the average of the heights given by the endpoints of each subinterval. That is,

T=\dfrac{b-a}n\left(\dfrac{f(x_0)+f(x_1)}2+\dfrac{f(x_1)+f(x_2)}2+\cdots+\dfrac{f(x_{n-2})+f(x_{n-1})}2+\dfrac{f(x_{n-1})+f(x_n)}2\right)

Factoring out \dfrac12 and regrouping the terms, you have

T=\dfrac{b-a}{2n}\left((f(x_0)+f(x_1)+\cdots+f(x_{n-2})+f(x_{n-1}))+(f(x_1)+f(x_2)+\cdots+f(x_{n-1})+f(x_n))\right)

which is equivalent to

T=\dfrac12\left(L+R)

and is the average of L and R.

So the trapezoidal approximation for your problem should be \dfrac{14+21}2=\dfrac{35}2=17.5\text{ in}^2
4 0
3 years ago
Math is a difficult subject for many students. Often, algebra is the worse, with “what do you mean solve for X? What is X”?! Mat
irakobra [83]
You could just go to kahn academy tho
3 0
3 years ago
Please help quickly !!
Nataly_w [17]

Answer:

16.5x == 465.3

Step-by-step explanation:

To find the rate , take the number of miles and divide by the gallons

rate = 465.3 / 16.5

Let the rate be x

x = 465.3 / 16.5

Multiply each side by 16.5

16.5x =  465.3

6 0
3 years ago
I have no clue how to do this. I just need to pass my online math class.
Lerok [7]
If F(3) then 3=x. So all you would do is substitute 3 in for x
3 0
3 years ago
Read 2 more answers
Other questions:
  • -35 divided by 7 = -5<br>I Need a Word Problem to represent the equation?
    15·1 answer
  • Will odd numbers when added always make even numbers
    15·1 answer
  • Write two expressions that are equivalent to 2(x+4)
    11·2 answers
  • Why does a triangle have three sides if a pillow has four.
    12·2 answers
  • WILL GIVE BRAINLIEST!!! What is the distance, in miles, for the plane after 2 hours? Note: This is what you would have in the ta
    13·1 answer
  • F. How does sound propagate in air? Explain in short with a diagram.​
    7·1 answer
  • HOW DO I DO THIS AND WHERE CAN I LEARN MORE
    12·1 answer
  • 1. 4 A box contains 300 discs of different colours. There are 100 pink discs, 100 blue discs and 100 orange discs. The discs of
    8·1 answer
  • Tara has a box of 908 beads for making bracelets. She wants to put 15 beads on each bracelet she makes. What is the greatest num
    12·1 answer
  • Check the photo and please don’t take long I need it asap
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!