Lucy is 15 years old and has $1000, she invests in a CD paying 8% interest. How many times will her money double by the time she is 60?

Answers

Answer 1

Answer:

5

Step-by-step explanation:

(1 + i ) ^45     i = interest in decimal    45 = years

(1.08)^45 = ~~ 32    

when she is 65 it will be worth  32 000

  so it doubles  5 times   (1000  2000  4000  8000 16000 32000)


Related Questions

The first term of an arithmetic progression is 18 and the 18th is 60. Determine the common difference of the A.P

Answers

Answer:

42/17

Step-by-step explanation:

First term, a = 18

T18 = 60

Common difference, d = ?

[tex]T_{18} = 18 + (18 - 1)d \\ 60 = 18 + 17d \\ 17d = 42 \\ d = \frac{42}{17} [/tex]

A factory makes circular rugs with a radius of 6.5 feet. How much braid do
they need to go all the way around the outside of the rug? Use 3.14 for it.
A 40.82 ft
B 132.67 ft
C 20.41 ft
D R 16.14 ft

Answers

The answer is A, or 40.82 ft. This can be found using the formula for finding the perimeter of a circle: 2pir (2 x pi x radius). 2 x 3.14 = 6.28, and 6.28 x 6.5 = 40.82 ft. Hope this helps!

A right triangular prism is sliced parallel to it's base. What is the shape of the resulting two dimensional cross section?

Answers

Answer:

Triangle

Step-by-step explanation:

please help fast ......

Answers

Answer:

1/625

Step-by-step explanation:

You can reduce it to:

5^-8/5^-4

which becomes

1/5^4

which is 1/625

Payton bought a couple new dog toys for her puppy. The bone she bought cost $5.25and the frisbee cost $6.75. About how much did the toys cost? ESTIMATE UR ANSWER AND SHOW UR WORK PLS!




6. Roger bought a hamburger and french fries for $4.84. He paid with a $10 bill. Abouthow much change should he have gotten back? ESTIMATE UR ANSWER AND SHOW UR WORK PLS!

Answers

Answer:

The toys cost about $12.

Roger should have gotten back about $5.15 in change.

Step-by-step explanation:

Dog Toys Question:

Bone cost $5.25, so you can estimate it to be about $5.

Frisbee cost $6.75, so you can estimate it to be about &7.

To get estimated total, add $5 + $7 = about $12 total.

Roger's Change Question:

The hamburger and fries cost $4.84, so you can round that out to $4.85.

$10 - estimated $4.85 = about $5.15 in change.

You could also round the $4.84 cost of the hamburger and fries to $5 even. In this case, $10 - estimated $5 = about $5 in change.

EASY (25 POINTS)
Set up an equation

Answers

Answer:

D

Step-by-step explanation:

You want to make sure your coefficients in the first equation are 0.25 and 0.05 and add up to the total price. (3.65)

You want to make sure you have an equation that models the amount of coins, which was said to be 20 coins.

Help now ill give brainly!!!

Answers

Answer:

I think is no triangle possible.

Step-by-step explanation:

There is no 2 or 5.

I hope this helps. If it is wrong I am sorry. Please have a good day

4. Find the surface area of the triangular prism:
5 ft
5 ft
3 ft
14 ft
8 ft
Shows work please

Answers

Answer:

276ft^2

Step-by-step explanation:

A triangular prism is made up of multiple faces, just like any three-dimensional shape. Let's do the calculations for this shape together.

Top two faces: 5ft × 14ft × 2 = 140ft^2 (we multiply by two b/c there are two rectangles, so we save a step)

Front and back face: 8ft × 3ft = 24ft^2 (we do not divide by two b/c there are two triangles, so we save a step)

Bottom face*: 8ft × 14ft = 112ft^2

*Note: Don't solve for this face when calculating latent surface area, or when calculating the SA of a compound shape.

Now, we just add up the areas of all the shapes.

140 + 112 + 24 = 276

Final answer: 276ft^2

Perfect answer to your question

how many solutions are there to each of these equations?

Answers

Answer:

first one, put value of x= -3 and y = 0

second one, pit vale of x=7 and y= -7

Step-by-step explanation:

first one,

-14(-3) -20(0) =42

or, 42-0 = 42

or, 42 = 42

proved

second one,

-14(7) -20(-7) = 42

or, -98 + 140=42

or, 42 = 42

proved

Angle ABC and angle CBD are complementary. What is the value of X?

Answers

Answer:

26

Step-by-step explanation:

complementary means two angles that add up to 90 degrees

90-38=52

52÷2=26

to check work you can do 26×2 (since there's 2x) = 52

52+38=90

the radius r of a sphere is 4cm and is increasing at the rate of 0.5cm . At what rate is the volume?​

Answers

Answer:

32π or 100.53 cm^3  to the nearest hundredth.

Step-by-step explanation:

dr/dt = 0.5

V = (4/3)π r^3

So dV/dr = (4/3)* 3 π r^(3-1)

= 4πr^2

Rate of increase in volume:  

dV/dt = dV/dr * dr/dt

At r = 4:

Rate of increase in Volume

dV/dt = 4π(4)^2 * 0.5

= 64π * 0.5

= 32π.

Which of the lines is a line of symmetry for the triangle?

A. FG and HI
B. DE only
C. none of the lines
D. FG only

Answers

[tex]\qquad\qquad\huge\underline{{\sf Answer}}[/tex]

The Correct choice is :

A. FG and HI

As we know, line of symmetry divides a figure into two equal halves, where the two resultant figures are congruent to each other.

i will give brainliest

A) 480

B)960

C) 2,880

D) 320

Answers

Answer:

D) 320

Step-by-step explanation:

10 x 8 for the base is 80. For the 4 triangles it is 12 x 10 divided by 2 x 4 which gives you 240. 240 + 80 is 320.

You have 5/10 of a pizza left over from your pool party. If you sent 7/11 of the leftover pizza home with your friends, how much of the pizza do you have left in the box?

Answers

Answer:

Step-by-step explanation:

[tex]\frac{5}{10} * \frac{7}{11} = \frac{35}{110}\\ \frac{35}{110} = \frac{7}{55}[/tex]

Answer:

2/11.

Step-by-step explanation:

5/10 is 1/2, and you sen 7/11 of this away, meaning you have 4/11 for yourself.  Multiplying 4/11 by 1/2, we get 2/11.

Solve for x. Round to the nearest tenth, if necessary.

Answers

Answer:

since the adjacent is given which is 6.3 and we are to solve for the hypotenuse, it's best to use Cos

since Cos(27°)=adjacent/hypotenuse

we can substitute in the values

therefore we have Cos(27°)=6.3/x

x=6.3/Cos(27°)

x=7.06...

rounding this to the nearest tenth will be 7.1

therefore x=7.1

I borrowed $25,000 for 5 years at a 5% interest. What was the total interest?

Answers

Answer:

The Total interest paid is $3,306.87

Find the radius and the diameter to the nearest hundredth when C = 8π yd. Use 3.14 for π.

Answers

Answer:

Diameter=8

Radius=4

Step-by-step explanation:

The equation for circumference is dπ where "d" is the diameter.

C = 8π

d=8

The equation for radius is d/2

r=8/2

r=4

How much is 1 inch pls answer this question for me smart ones

Answers

Answer: 2.54 centimeters

Step-by-step explanation: multiply the length value by 2.54

Solve for x.
Enter the solutions from least to greatest.
—4x2 – 7 = -11
lesser x =
greater x =

Answers

Answer:

lesser x = - 1 , greater x = 1

Step-by-step explanation:

- 4x² - 7 = - 11 ( add 7 to both sides )

- 4x² = - 4 ( divide both sides by - 4 )

x² = 1 ( take square root of both sides )

x = ± [tex]\sqrt{1}[/tex] = ± 1

then

lesser x = - 1

greater x = 1

how do I write an expression that is equivalent to 3(7 + x)?

Answers

Answer:

21 + 3x

Step-by-step explanation:

Use Distributive property: a(b + c) =(a *b) + (a*c)

3( 7 + x)= 3*7 + 3*x

           = 21 + 3x

Translate the following:
“Four times the cube root of x, minus nine”

Answers

Answer:

D, because the word problem separates the minus nine with a comma.

a is incorrect because there is no cube root

b is incorrect because again, no cube root

c is incorrect because the minus nine should not be within the cube root

Four times the cube root of x, minus nine is [tex]4\sqrt[3]{x-9}[/tex].So, our correct answer is 3. [tex]4\sqrt[3]{x-9}[/tex] .Here are a few ways to write "Four times the cube root of x, minus nine":

4 * √(x) - 9

4√(x) - 9

[tex]4\sqrt[3]{x-9}[/tex]

The first way to write it is the most literal way. It uses the multiplication symbol (*) to indicate that we are multiplying 4 and √(x). The second way to write it is a bit more concise. It uses the exponent notation to indicate that we are taking the cube root of x. The third way to write it is the most mathematical way. It uses the LaTeX symbol for the square root, which is \sqrt{}.Which way you choose to write it depends on the context. If you are writing in a more informal setting, you might use the first way. If you are writing in a more formal setting, you might use the third way

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If n is at least 7, which inequality best represents the values of n?
On>7
On<7
On 27
Ons 7


Answers

Answer:

  n ≥ 7

Step-by-step explanation:

The English descriptor "is at least" corresponds to the math relation "is greater than or equal to." In symbols, we have ...

  "n is at least 7"   ⇔   n ≥ 7

Answer:

n ≥ 7

Step-by-step explanation:

If the question states "at least 7", it means the inequality should include 7 and the rest of the values lying in the set of the inequality are greater than 7 as 7 is the least value.

Inequality

n ≥ 7

If the area of the park is 180 square feet and the length of the park is 18 feet. What is the width of the park.

Answers

10 feet
180/18 = 10
so the width is 10 feet
BRAINLIEST? TY!

Nathan and some friends are going to the movies. At the theater, they sell a bag of
popcorn for $4.50 and a drink for $4.25. How much would it cost if they bought 7
bags of popcorn and 3 drinks? How much would it cost if they bought p bags of
popcorn and d drinks?

Answers

Answer:

$44.25

Step-by-step explanation:

($4.50×7)+(4.25×3)

=$31.50+$12.75

=$44.25

$44.25 is the cost if they bought 7 bags of popcorn and 3 drinks and 4.50p+4.25d is for p bags of popcorn and d drinks.

What is Equation?

Two or more expressions with an Equal sign is called as Equation.

Given that

popcorn for $4.50

drink for $4.25.

There are 7 bags of popcorn and 3 drinks.

So let us find the total cost.

7(4.50)+3(4.25)

31.5+12.75

44.25

So $44.25 is the cost if they bought 7 bags of popcorn and 3 drinks

Now we need to find cost for p bags of popcorn and d drinks.

4.50p+4.25d

Hence $44.25 is the cost if they bought 7 bags of popcorn and 3 drinks and 4.50p+4.25d is for p bags of popcorn and d drinks.

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Maria wants to join a music class. Music class A charges an enrollment fee of $24.00 plus $12.00 per hour, and music class B charges an enrollment fee of $20.00 plus $16.50 per hour.

The graph below represents the fee for music class A and music class B.


According to the graph above, at approximately how many hours will the total fee for both the classes be equal?

1. 2.4
2. 1.8
3. .2
4. .8

Answers

I think it’s the last one but not sure

Answer:

Its .8 or #4.

Step-by-step explanation:

Question is in picture

Answers

Answer:

I would say city B.

Step-by-step explanation:

Because NC is closer to the equator than Ohio, Ohio might have weirder weather. I've also read that Ohio's weather is always super unstable and always a gamble. I'm not 100% sure tho. Hope that helps! (:

which equation below would best represent how to find the area of the square ?

Answers

Answer:

Step-by-step explanation:

well the area of a square is equal to the Width x Height. For example each side being 4 would be 4x4x4x4 or 4 to the second power.

Help asap no links pls





……….

Answers

Step-by-step explanation:

I will take long to answer this so i will give you the key to answering it.

Basically, since you know the sum of all the angles of a triangle equal 180, all you have to do is use 180 and subtract the numbers alredy there together to get the missing amount.

For example, to find out the answer to A, you already know two of the degree measurements which are 72 and 68. Now, subtract them with 180.

72+68=140

180-140=40

So, therefore, A equals 40 degrees.

I will give you one more example.

If you want to find the measurements of the angles B and C, the same process will happen. The only thing that is different is that only one known measurement is provided which is 36.5 but not so fast, they gave you a hint. That square above B. That means B is a right angle. So we got one measurement in the triangle, B is 90 degrees. Alright now continue like before.

90+36.5=126.5

180-126.5=53.5

Hope this helps.

5 x 5/6 in simplest form

Answers

25/6 or 4 1/6

Depends if improper or mixed fraction

Where does the Democratic Republic of the Congo (DRC) rank for size globally?
A. 10
B.12
C. 8
D. 14

Answers

B but now it is 11 Yh place but 12
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