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
GenaCL600 [577]
3 years ago
11

statistical models predict that price p( in dollars) of a new smartphone will change according to the function p=900-4t^2. where

t is the number of months since january. which expression gives the.month t in terms of the price?

Mathematics
1 answer:
Gre4nikov [31]3 years ago
7 0

we are given

p=900-4t^2

where

price p( in dollars) of a new smartphone

t is the number of months since January

now, we can solve for t

step-1:

Add both sides by 4t^2

p+4t^2=900-4t^2+4t^2

p+4t^2=900

step-2:

Subtract both sides by p

p+4t^2-p=900-p

4t^2=900-p

step-3:

divide both sides by 4

\frac{4t^2}{4} =\frac{900-p}{4}

t^2=\frac{900-p}{4}

t^2=225-0.25p

step-4:

Take sqrt both sides

\sqrt{t^2} =\sqrt{225-0.25p}

t=\sqrt{225-0.25p}

so, we get

t=\sqrt{225-0.25p}..............Answer

You might be interested in
Can someone help me with this question?
charle [14.2K]
Finding the sol'n to f(x) - g(x) = 0 is the same as finding the solution of f(x)=g(x).  You could do this analytically by setting the actual function f(x) = g(x) and solving for x (and then for y), or you could estimate the solution from the given graph.  The two lines intersect at approx. x=-3.75, y=2.5.
6 0
3 years ago
A) show that $n(2n + 1)(7n + 1)$ is divisible by 6 for all integers $n$.
goldenfox [79]
Hi,

A)
\dfrac{n(2n+1)(7n+1)}{6} \\

= \dfrac{14n^3+9n^2+n}{6} \\

= \dfrac{12n^3+6n^2}{6} + \dfrac{2n^3+3n^2+n}{6} \\

=2n^3+n^2+ \dfrac{n(2n^2+3n+1)}{6} \\

= 2n^3+n^2+ \dfrac{n(n+1)(2n+1)}{6} \\

= 2n^3+n^2+ 1^2+2^2+3^2+...+n^2\ is\ an\ integer.


B)
Only if n=4*k or n=4*k+1 , k beeing an integer.

8 0
3 years ago
PLEASE HELP!!! 8th grade math
arlik [135]
Your answer will be the last one
6 0
3 years ago
There are 4 granola bars. Three friends want to share them evenly.
melomori [17]

Answer:

4/3 or 1 and 1/3 or 1.33333 repeating

Step-by-step explanation:

you have 4 granola bars and 3 friends and you want to divide them among 3 friends

4/3

3 0
3 years ago
Read 2 more answers
I don't know how to work this problem out
madam [21]
1/5(x-y) = 1
x+y = 9

x-y = 5 (x5)
x+y = 9

First you want to create both equations so at least one of the variables (x or y) are the same in both equations, so that is why I multiplied the top one by 5, you multiply the whole equation (both sides)

2x = 14
x = 7

Then you either Plus or minus one from the other, I plused the top one onto the bottom one, then solved for x

7 + y = 9
y = 2

Then put x back into one of the first two equations to get Y


4 0
3 years ago
Other questions:
  • HELP PLEASE I need help
    5·1 answer
  • (x+7)/(x^2-49) find the domain. show work
    15·1 answer
  • What point divides the directed line segment AB into a 2:3 ratio?
    9·2 answers
  • Divide X^2+77x+20 by x+9 what is the quotient and remainder ?
    15·1 answer
  • (4a^3)(5a)^2 with work
    14·1 answer
  • If the measure of the angle in the southwest corner of the intersection of Broadway and 21st Street is approximately 105ºwhat is
    9·1 answer
  • Connor has five nickels in one hand and some dimes in his other hand. He has more than two times as many dimes as nickels. He ha
    7·1 answer
  • Dan and Becca have cups that are the same size. Dans cup is 1/4 full of water. Beccas cup is 1/6 full of water. Compare the amou
    13·1 answer
  • 8 4/7÷1/5 Please Help
    14·2 answers
  • What is the least whole number n such that 84 divides n! ?
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!