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
Rashid [163]
3 years ago
6

Buffy just put some money into a CD that pays 10.1% interest, compounded monthly. According to the rule of 72, in approximately

how many years will she have 4 times the amount of money that she has now?
Mathematics
2 answers:
Grace [21]3 years ago
6 0

Answer:

14.3 years is correct

Step-by-step explanation:

quester [9]3 years ago
5 0
Let the principal be 'x' then the Amount will be 4x.

As the interest is compounded monthly:

Rate of interest = 10.1 % = 10.1/(100*12) = 0.101/12 

Time = 12t

Amount = Principal[1 + Rate/100]

⇒ 4x = x[1 + 0.101/12]¹²t

⇒ 4x/x [1 + 0.008416667]¹²t

⇒ 4 = [1.008416667]¹²t

⇒ log(4) = log[1.008416667]¹²t

⇒ 0.602059991327 = [0.003640014891]¹²t

⇒ 12t = 0.602059991327/0.003640014891

⇒ 12t = 165.400419876

⇒ t = 165.400419876/12

t = 13.78 years  or 13 years 9 months.

So, it is about 13 years 9 months she will have 4 times the amount of money.
You might be interested in
Helppppp me plss, I’ll mark u as brainlest
Marina86 [1]

\large\color{lime}\boxed{\colorbox{black}{Answer : - }}

We know that, in ∆ABC,

∠A+∠B+∠C = 180°

But the triangle is right angled at C

ie., ∠C = 90°

Therefore, ∠A+∠B+ 90° = 180°

⇒ ∠A + ∠B = 90°

Therefore, <u>cos(A + B) = cos 90º = 0</u>

6 0
3 years ago
PLEASE HELP!
fenix001 [56]

Answer:

No

Step-by-step explanation:

No because (1,2) falls on the line, and the line is a dotted line, which means that any point on the line is not a solution to the inequality.

5 0
3 years ago
Help please! Its worth 25.. no links or files
NeX [460]

Answer:

C

Step-by-step explanation:

4*5=20 include c, and 4*-2=-8 include d

6 0
2 years ago
A state park charges an entrance fee based on the number of people in a vehicle. A car containing 2 people is charged $14, a car
Artyom0805 [142]

Answer:

Therefore $98 is be charged a bus containing 30 people.

Step-by-step explanation:

Given that,

A state park charges an entrance fee based on the number of people in vehicle.

Let the entry fee for the vehicle be E and entry fee for each person be x.

Then

C= E+(P×x)

C= Total charge in $

E= entry fee for a vehicle

P=No. of person

x= Entry charge per person.

Given A car containing 2 people charged $14

C=$14, P=2

∴14= E+(2× x)

⇒E+2x=14.....(1)

Again A car containing 4 people charged $20

C=$20, P=4

∴20= E+(4× x)

⇒E+4x=20.....(2)

Subtract (1) from (2), we get

E+4x-(E+2x)= 20-14

⇒E+4x-E-2x=6

⇒2x=6

⇒x=3

Putting the value of x in equation (1)

E+(2×3)=14

⇒E=14-6

⇒E=8

Therefore E=$8 and x=$3

Next we check whether our assumption is correct or wrong. Putting the value of E and x for third case

Here P= 8

Therefore C= E+(P×x)

                    = 8+(8× 3)

                    =8+24

                   =$32

Therefore our assumption is correct.

Now C=? , P= 30

The charged for the 30 people is

C= $[8+(30×3)]

  =$[8+90]

 =$98

Therefore $98 is be charged a bus containing 30 people.

4 0
3 years ago
What is the answer ?
Mashcka [7]
Hi there! The answer is A.
f(x) = - 2 {x}^{2}

In the graph we can see is a parabola (so B. cannot be the answer) with a vertex at the point (0, 0), which means the parabola is not translated upwards or downwards. Therefore, only A. can be correct, since all the other formulas include a translation downwards (which can be deduced from the -2 in the formula).
3 0
3 years ago
Other questions:
  • Which expressions are equivalent to g+h+ (j+k)? Check all that apply.
    13·2 answers
  • PLEASE HELLLLLPPPPPPP
    11·1 answer
  • Third derivative of xsinx?
    6·1 answer
  • 2. Divide 8x - 4x +1 by x+6
    15·1 answer
  • Help help help help need to pass this
    13·1 answer
  • HELP ASAP!! What is the equation for the constant of proportionality that matches the table?
    9·1 answer
  • Can someone help me out? :)
    7·2 answers
  • Does this graph represent a function and if so why
    9·1 answer
  • What is the answer x- 8=-6?
    14·2 answers
  • Have you ever seen a photo online that did not seem to have the colors right? Perhaps the colors looked unnatural or not appropr
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!