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
Morgarella [4.7K]
3 years ago
14

Please Help Given the function f(x)=x^2+2x+1, find: f(2b)

Mathematics
1 answer:
DerKrebs [107]3 years ago
4 0

Answer:

f(2b) = 4b^2 +4b +1

Step-by-step explanation:

Put 2b where x is and simplify.

f(2b) = (2b)^2 +2(2b) +1

f(2b) = 4b^2 +4b + 1

You might be interested in
Sandy is upgrading her Internet service. Fast Internet charges $45 for installation and $49.45 per month.
butalik [34]

Answer:

x = 6 months.

The equation is given by $45 + ($49.45 × x) = ($56.95 × x).

Step-by-step explanation:

i) Let x be the number of months of Internet Service purchased till the Fast

  Internet charges and Quick Internet charges become the same.

ii) Charges for Fast Internet for x months is given by $45 + ($49.45 × x)

iii) Charges for Quick Internet for x months is given by ($56.95 × x)

iv) According to the first statement we will now equate the equations in ii)  

   and iii) and solve for x.

   Therefore, $45 + ($49.45 × x) = ($56.95 × x)

                      45 + 49.45 x  =  56.95 x

  Therefore  (56.95 - 49.45) x = 45

                    7.50 × x  =  45

  Therefore x = 45 ÷  7.5 = 6

6 0
3 years ago
It's said to say my question, but it's in the pic, so I don't know what to say. <br> But thanks
BARSIC [14]

Answer: A,  or 0.2x

Step-by-step explanation:

To figure how expressions and percent's match up, replace the x with an easy number. For example, I use 4.

20% of 4 is 0.8, and 4 x 0.2 is also 0.8

Therefore, the expression to represent that percentage is A.

Also, the other answers were WAYYY off.  

B,  or x - 20 is flawed since x could be anything.

C, is also flawed in the same way.

And D makes -76.

A is the only sensible one and is proven to work.

Hope this helped!

-Nick

3 0
3 years ago
How do I solve this????
Arlecino [84]
Let's say the numbers are "a" and "b"
hmm say "a" is the smaller, and "b" the greater

so "b" is "4 more than 5 times" "a"

so... 5 times "a" is 5*a or 5a
4 more than "that", will be "that" + 4
or
5a + 4

so.. whatever "a" is, "b" is 5a+4

now, their sum is 22, as opposed to "zz" hehe

so       \bf \begin{cases}&#10;a+b=22\\&#10;--------------\\&#10;\boxed{b}=5a+4\qquad thus\\&#10;--------------\\&#10;a+\boxed{5a+4}=22&#10;\end{cases}

solve for "a", to see what the smaller one is

what's "b"?  well, b = 5a + 4
3 0
3 years ago
Is this equation a true statement when x = 6?<br>-2 + 11 - 5x = 5 -6x​
iris [78.8K]

Answer:

False

Step-by-step explanation:

Since we already know the value of x lets plug it in and multiply it

-2+11-5(6)=5-6(6)

-2+11-30=5-36

Now lets put them together

9-30=5-36

-21 = -31

Making x=6 false

3 0
3 years ago
How do the particular characteristics of an ecosystem arise?
kumpel [21]

Answer:

Step-by-step explanation:

Ecosystems form in response to the unique but predictable climate of each geographic area. And since elevation and topography affect climate, ecosystems are different at different elevations. The life in any given ecosystem is the direct result of elevation, topography, and temperature, and rainfall patterns.

4 0
3 years ago
Other questions:
  • Tickets to the concert were 2.50 for adults and 1.00 for students. 1,200 was collected and 750 tickets were sold.
    9·1 answer
  • Slope = -8, passing through (2,5)
    9·1 answer
  • Kyle took out a seven-year loan of $8,000 loan from his bank. The bank charges an interest rate of 5 percent, compounded yearly.
    9·2 answers
  • NEED HELP RN PLZ!!!!!!!!!!!!!!!!!!!!!Complete the square to find the zeros of y=x^2+12x-5?
    8·1 answer
  • One x-intercept for a parabola is at the point
    14·1 answer
  • How does a residential survey help buyers?
    14·2 answers
  • Cristina has completed .4 of his test. The test has 40 questions total. if he completes 12 more how many more will he have left?
    10·1 answer
  • Which graph represents 8x-5y&lt; 3
    5·1 answer
  • Evaluate when <br> a =3 b= 4.5 and h = 6
    11·1 answer
  • What is the product of 630 and 7.2 x 10^4 expressed in scientific notation
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!