Ask question

Ask question

All categories

bogdanovich [222]

3 years ago

9

Amanda bought 2 CDs that were each the same price. Including sales tax, she paid a total of $29.80. Each CD had a tax of $1.10 .

What was the price of each CD before tax?
brainliest

1 answer:

Len [333]3 years ago

6 0

Answer:

13.80 there you go buddy

You might be interested in

part 3. Find the value of the trig function indicated, use Pythagorean theorem to find the third side if you need it.

Nat2105 [25]

Answer: $\bold{9)\ \sin \theta=\dfrac{1}{3}\qquad 10)\ \sin \theta = \dfrac{4}{5}\qquad 11)\ \cos \theta = \dfrac{\sqrt{11}}{6}\qquad 12)\ \tan \theta = \dfrac{17\sqrt2}{26}}$

<u>Step-by-step explanation:</u>

Pythagorean Theorem is: a² + b² = c² , <em>where "c" is the hypotenuse</em>

<em />

$9)\ \sin \theta=\dfrac{\text{side opposite of}\ \theta}{\text{hypotenuse of triangle}}=\dfrac{4}{12}\quad \rightarrow \large\boxed{\dfrac{1}{3}}$

Note: 4² + (8√2)² = hypotenuse² → hypotenuse = 12

$10)\ \sin \theta=\dfrac{\text{side opposite of}\ \theta}{\text{hypotenuse of triangle}}=\dfrac{16}{20}\quad \rightarrow \large\boxed{\dfrac{4}{5}}$

Note: 12² + opposite² = 20² → opposite = 16

$11)\ \cos \theta=\dfrac{\text{side adjacent to}\ \theta}{\text{hypotenuse of triangle}}=\dfrac{\sqrt{11}}{6}\quad =\large\boxed{\dfrac{\sqrt{11}}{6}}$

Note: adjacent² + 5² = 6² → adjacent = √11

$12)\ \tan \theta=\dfrac{\text{side opposite of}\ \theta}{\text{side adjacent to}\ \theta}=\dfrac{17}{13\sqrt2}\quad =\large\boxed{\dfrac{17\sqrt2}{26}}$

Note: adjacent² + 7² = (13√2)² → adjacent = 17

5 0

3 years ago

PLEASE HELP ME this is a 7th grade math test

konstantin123 [22]

Answer:

is there a picture or something

Step-by-step explanation:

or like some equation? Im in 7th grade too but i need a picture in order to help you So when u get a picture i edit my anwser and help you

3 0

2 years ago

Please help me with 25-29!!

vredina [299]

25-29 ok so first do 9-5 equals 4

4 0

3 years ago

I don't understand this??

Sindrei [870]

3,200?? (it may not be right I'm sorry.)

4 0

3 years ago

5) Ang Electronics, Inc., has developed a new HD DVD. If the HD DVD is successful, the present value of the payoff (at the time

Radda [10]

Answer:

Step-by-step explanation:

Dvbdssstggbvhhhhgtfggggg

7 0

3 years ago