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SVETLANKA909090 [29]
3 years ago
9

I NEED HELP!!!! Ryan bought 3 CDs that were each the same price. Including sales tax, he paid a total of 48.60. Of that total, 1

.80 was tax. What was the price of each CD before tax?
Mathematics
2 answers:
const2013 [10]3 years ago
6 0
The answer is 15.60
Paha777 [63]3 years ago
4 0

48.6-1.8=46.8

46.8/3=15.6

$15.60 per CD :)

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If B P ⊥ P C , what is m B C ^ ? 180 90 60
Andrei [34K]

The measure of angle BC (m ∠BC) is 90°

<h3>Perpendicular lines</h3>

From the question, we are to determine the measure of angle BC

From the given information, we have that

B P ⊥ P C

This means line BP is <u>perpendicular</u> to line PC

The angle between two perpendicular lines is 90°

Hence, the measure of angle BC (m ∠BC) is 90°.

Learn more on Perpendicular lines here: brainly.com/question/138956

#SPJ1

4 0
2 years ago
3. Find the value of p in each of the following when f(x) is divided by d(x), with the help of remainder theorem:
ipn [44]

The remainder theorem says that dividing a polynomial <em>f(x)</em> by a 1st-degree polynomial <em>g(x)</em> = <em>x</em> - <em>c</em> leaves a remainder of exactly <em>f(c)</em>.

(a) With <em>f(x)</em> = <em>px</em> ³ + 4<em>x</em> - 10 and <em>d(x)</em> = <em>x</em> + 3, we have a remainder of 5, so

<em>f</em> (-3) = <em>p</em> (-3)³ + 4(-3) - 10 = 5

Solve for <em>p</em> :

-27<em>p</em> - 12 - 10 = 5

-27<em>p</em> = 27

<em>p</em> = -1

(b) With <em>f(x)</em> = <em>x</em> + 3<em>x</em> ² - <em>px</em> + 4 and <em>d(x)</em> = <em>x</em> - 2, we have remainder 8, so

<em>f</em> (2) = 2 + 3(2)² - 2<em>p</em> + 4 = 8

-2<em>p</em> = -10

<em>p</em> = 5

(you should make sure that <em>f(x)</em> was written correctly, it's a bit odd that there are two <em>x</em> terms)

(c) <em>f(x)</em> = 2<em>x</em> ³ - 4<em>x</em> ² + 6<em>x</em> - <em>p</em>, <em>d(x)</em> = <em>x</em> - 2, <em>R</em> = <em>f</em> (2) = 18

<em>f</em> (2) = 2(2)³ - 4(2)² + 6(2) - <em>p</em> = 18

12 - <em>p</em> = 18

<em>p</em> = -6

The others are done in the same fashion. You would find

(d) <em>p</em> = 14

(e) <em>p</em> = -4359

(f) <em>p</em> = 10

(g) <em>p</em> = -13/2 … … assuming you meant <em>f(x)</em> = <em>x</em> ⁴ + <em>x</em> ³ + <em>px</em> ² + <em>x</em> + 20

8 0
3 years ago
I don't get this. I could really use help.​
olga nikolaevna [1]

The y intercept is what the y value is when x is 0.

Set X to 0 and solve:

-2/9(0) + 1/3

0 + 1/3 = 1/3

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6 0
3 years ago
Arrange the summation expressions in increasing order of their values.
nalin [4]
We'll solve for each one of them:

\sum_{i=1}^{4}4(5)^{i-1} = (4(5)^{1-1}) + (4(5)^{2-1}) + (4(5)^{3-1}) + (4(5)^{4-1})
=4+20+100+500 = 624

\sum_{i=1}^{5}3(4)^{i-1} = (3(4)^{1-1}) + (3(4)^{2-1}) + (3(4)^{3-1}) + (3(4)^{4-1}) + (3(4)^{5-1})
=3+12+48+192+768=1023

\sum_{i=1}^{2}5(6)^{i-1} = (5(6)^{1-1}) + (5(6)^{2-1})
=5+30=35

\sum_{i=1}^{4}5^{i-1} = (5^{1-1})+(5^{2-1})+(5^{3-1})+(5^{4-1})
=1 + 5+ 25+125 = 156

So, our totals are: 624, 1023, 35, and 156. So clearly, 1023 > 624 > 156 > 35. W can write it as (your answer):

\sum_{i=1}^{2}5(6)^{i-1}

Hope this helps! If anything is confusing, you can always DM me.
3 0
3 years ago
Read 2 more answers
Rewrite the equation by completing the square.<br> x2 – 2x + 1 = 0
Nikolay [14]

Answer:

Step-by-step explanation:

3 0
4 years ago
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