Ask question

Ask question

All categories

2 years ago

9

Felipe bought 4 CDs that were each the same price. Including sales tax, he paid a total of $54.80. Each CD had a tax of $1.10. W

hat was the price of each CD before tax?

1 answer:

vitfil [10]2 years ago

3 0

Answer:

13.7. with tax it is 14.8

You might be interested in

WILL MARK BRAINLIEST!!! 40 POINTS!! ACTUAL ANSWERS, PLZZZ

vitfil [10]

Answer:

Step-by-step explanation:

PART A: 2x^5 + 3x^2-3

It is a fifth degree polynomial because, the highest degree is 5 and it is in the standard form since, the polynomial is written in descending order i.e, from highest degree to the least

part B:

Closure property is applicable to the subtraction of polynomials.

for example 2x^4+2x^2-5 is a polynomial and 2x^3+2x+2 is also a polynomial.

if we subtract these two polynomials, the outcome

2x^4-2x^3+2x^2-2x-7 is also a polynomial

4 0

2 years ago

Read 2 more answers

Using the numbers 5, 8, and 24, create a problem using no more than four operations (adding, subtracting, multiplication, divisi

Alik [6]

The given three numbers are 5,8,24.

We have to use four operations (Adding, Subtracting,multiplication, division, square, square root, cube, cube root) out of these operation to make the result an irrational number.

$1. \sqrt{\frac{24}{8}} + 5=\sqrt{3}+5,\\\\2. \sqrt{\frac{24}{8}} - 5=\sqrt{3} -5 \\\\ 3.\sqrt{\frac{24 \times 5}{8}}=\sqrt{15} \\\\ 4. (5 \times 8 \times 24)^\frac{1}{3}$

There are many more examples that you can write.

Keep in mind

1. Sum of Rational and irrational is always irrational.

2. Difference of rational and irrational is always irrational.

As none of the 5,8,24 is a perfect square , nor addition of any two results in a perfect square, so square root of their addition or subtraction or multiplication results in an irrational number.

Similarly ,apart from 8, none of 5,24 is a perfect cube.So if you add or subtract any number from 8 and take their cube root or square root ,results in an irrational number.

3 0

3 years ago

Read 2 more answers

I will give brainliest:)

Scorpion4ik [409]

The difference starts off by 7. Then it continues to double. Then the answer is 14, 28, 42. The answer doubles every time.

5 0

2 years ago

B) Alex invests $2000 in an account that has a 6% annual rate of growth. To the nearest year, when

wlad13 [49]

Answer:

part 1) 10 years

part 2) 10 years

Step-by-step explanation:

<u><em>The correct question is:</em></u>

Part 1) Alex invests $2000 in an account that has a 6% annual rate of growth compounded annually. To the nearest year, when will the investment be worth $3600?

Part 2) Alex invests $2000 in an account that has a 6% annual rate of growth compounded continuously. To the nearest year, when will the investment be worth $3600?

Part 1) we know that

The compound interest formula is equal to

$A=P(1+\frac{r}{n})^{nt}$

where

A is the Final Investment Value

P is the Principal amount of money to be invested

r is the rate of interest in decimal

t is Number of Time Periods

n is the number of times interest is compounded per year

in this problem we have

$P=\$2,000\\A=\$3,600\\ r=6\%=6/100=0.06\\n=1$

substitute in the formula above

$3,600=2,000(1+\frac{0.06}{1})^{t}$

$1.8=(1.06)^{t}$

Apply log both sides

$log(1.8)=log[(1.06)^{t}]$

Applying property of exponents

$log(1.8)=(t)log(1.06)$

$t=log(1.8)/log(1.06)$

$t=10.09\ years$

Round to the nearest year

$t=10\ years$

Part 2) we know that

The formula to calculate continuously compounded interest is equal to

$A=P(e)^{rt}$

where

A is the Final Investment Value

P is the Principal amount of money to be invested

r is the rate of interest in decimal

t is Number of Time Periods

e is the mathematical constant number

we have

$P=\$2,000\\A=\$3,600\\ r=6\%=6/100=0.06$

substitute in the formula above

$3,600=2,000(e)^{0.06t}$

$1.8=[e]^{0.06t}$

Apply ln both sides

$ln(1.8)=ln[e]^{0.06t}$

$ln(1.8)=(0.06t)ln[e]$

$t=ln(1.8)/0.06$

$t=9.80\ years$

Round to the nearest year

$t=10\ years$

6 0

2 years ago

A garden is divided into 6 equal parts.Joey plants strawberries in 1/2 of the garden.he plants watermelons in the other parts.ho

faltersainse [42]

Answer:

3

Step-by-step explanation:

parts planted with strawberries is

1/2 of 6 parts = 3 parts

remaining parts have watermelon planted

6- 3 =3 parts

3 0

2 years ago

Read 2 more answers