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
diamong [38]
3 years ago
12

Really need help :( struggling

Mathematics
1 answer:
Scorpion4ik [409]3 years ago
6 0

Answer:

B

Step-by-step explanation:

The original amount will be the coefficient of (1 + 0.04)^r which is $728.00.

You might be interested in
Pls help i am on a timer will give a brainlist for the first person to answer it
Svetradugi [14.3K]

Answer: c

Step-by-step explanation:

6 0
2 years ago
Find the maximum and minimum values of the function f(x,y)=2x2+3y2−4x−5 on the domain x2+y2≤100. The maximum value of f(x,y) is:
ryzh [129]

First find the critical points of <em>f</em> :

f(x,y)=2x^2+3y^2-4x-5=2(x-1)^2+3y^2-7

\dfrac{\partial f}{\partial x}=2(x-1)=0\implies x=1

\dfrac{\partial f}{\partial y}=6y=0\implies y=0

so the point (1, 0) is the only critical point, at which we have

f(1,0)=-7

Next check for critical points along the boundary, which can be found by converting to polar coordinates:

f(x,y)=f(10\cos t,10\sin t)=g(t)=295-40\cos t-100\cos^2t

Find the critical points of <em>g</em> :

\dfrac{\mathrm dg}{\mathrm dt}=40\sin t+200\sin t\cos t=40\sin t(1+5\cos t)=0

\implies\sin t=0\text{ OR }1+5\cos t=0

\implies t=n\pi\text{ OR }t=\cos^{-1}\left(-\dfrac15\right)+2n\pi\text{ OR }t=-\cos^{-1}\left(-\dfrac15\right)+2n\pi

where <em>n</em> is any integer. We get 4 critical points in the interval [0, 2π) at

t=0\implies f(10,0)=155

t=\cos^{-1}\left(-\dfrac15\right)\implies f(-2,4\sqrt6)=299

t=\pi\implies f(-10,0)=235

t=2\pi-\cos^{-1}\left(-\dfrac15\right)\implies f(-2,-4\sqrt6)=299

So <em>f</em> has a minimum of -7 and a maximum of 299.

4 0
3 years ago
Ostuni evaluated -4 + x for x = -9 1/2 and got an answer of 5 1/2. What might the student have done wrong?
Sav [38]
The student added 9 1/2 instead of adding -9 1/2
8 0
3 years ago
A wire is ⅝ meters long. it is divided into 2 equal parts. what is the length of each part​
mote1985 [20]

Answer:

5/16m long.

Step-by-step explanation:

  • 5/8  ÷  2/1
  • 5/8  ×  1/2
  •    =5/16m long.
7 0
2 years ago
Read 2 more answers
Simplify the expression given below: (18x^3-7)-(14x^3-36)
vovangra [49]

Answer:

2x6 + 4x5 + x4 + 11x3 + 2x2 + 4x + 4

Step-by-step explanation:

6 0
2 years ago
Other questions:
  • 10) 28n4 + 16n? – 80n² = 0<br> Factoring quadratic
    10·2 answers
  • Please help me understand this, i've been stuck on this question
    15·1 answer
  • If ON is congruent to OL, find m OML
    9·1 answer
  • Please help me with this ASAP I need this badly
    9·1 answer
  • PLS HELP
    6·1 answer
  • What is 42% of 250. Please help me on this question
    15·1 answer
  • Rewrite in simplest radical form<br> -3. Show each step of your process.
    14·1 answer
  • I NEED HELP ASAP IM TIMED... picture connected!
    7·1 answer
  • Not sure how to do this *look at the picture*
    7·1 answer
  • Does anyone know this? please help
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!