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
ElenaW [278]
2 years ago
10

Boris bought 5 CDs that were each the same price. Including sales tax, he paid a total of $59.50. Each CD had a tax of $0.70. wh

at was the price of each cd before tax
Mathematics
2 answers:
Taya2010 [7]2 years ago
7 0

Answer:

$8.40

Step-by-step explanation:

fgiga [73]2 years ago
5 0

Answer:

$11.20

Step-by-step explanation:

$0.70 x 5 = $3.50

$59.50 - $3.50 = $56.00

$56.00/5 = $11.20

You might be interested in
Y is a random variable that is distributed N(-16, 1.21). Find k such that Prob(-15.043 < Y ≤ k) = 0.1546. (Round your answer
IgorLugansk [536]

Transform <em>Y</em> to <em>Z</em>, which is distributed N(0, 1), using the formula

<em>Y</em> = <em>µ</em> + <em>σZ</em>

where <em>µ</em> = -16 and <em>σ</em> = 1.21.

Pr[-15.043 < <em>Y</em> ≤ <em>k</em>] = 0.1546

Pr[(-15.043 + 16)/1.21 < (<em>Y</em> + 16)/1.21 ≤ (<em>k</em> + 16)/1.21] = 0.1546

Pr[0.791 < <em>Z</em> ≤ (<em>k</em> + 16)/1.21] ≈ 0.1546

Pr[<em>Z</em> ≤ (<em>k</em> + 16)/1.21] - Pr[<em>Z</em> < 0.791] = 0.1546

Pr[<em>Z</em> ≤ (<em>k</em> + 16)/1.21] = 0.1546 + Pr[<em>Z</em> < 0.791]

Pr[<em>Z</em> ≤ (<em>k</em> + 16)/1.21] ≈ 0.1546 + 0.786

Pr[<em>Z</em> ≤ (<em>k</em> + 16)/1.21] ≈ 0.940

Take the inverse CDF of both sides (<em>Φ(x)</em> denotes the CDF itself):

(<em>k</em> + 16)/1.21 ≈ <em>Φ⁻¹</em> (0.940) ≈ 1.556

Solve for <em>k</em> :

<em>k</em> + 16 = 1.21 • 1.556

<em>k</em> ≈ -14.118

8 0
3 years ago
PLEASEEEE
nordsb [41]

Answer: 9.3x10-11

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
Srry I just don’t understand 12 points
marshall27 [118]

Answer:

y = -2x - 3

Step-by-step explanation:

Please look carefully at this graph.  There are two red dots on the graph.  The x- and y-coordinates of one are (-5,7) and those of the other are (0,-3).

Now as we move to the right, from (-5,7) to (0,-3), x increases by 5 and y decreases by 10 (note that 7-10 is -3).  Thus, the slope of this line is

m = rise / run = -10/5, or m = -2.

Then the equation of this line, in point-slope form, is

y-7 = -2(x-[-5])x, or y-7 = -2(x+5).  This is in point-slope form.

If you'd like to have it in slope-intercept form, manipulate y-7 = -2(x+5) as follows:  (a) add 7 to both sides, obtaining y = -2(x+5) + 7, and (b) perform the indicated multiplication:  y = -2x - 10 + 7, or y = -2x - 3.

6 0
3 years ago
Read 2 more answers
Which expression is equivalent to the given expression. pls help :)
Tomtit [17]

Answer:

B

Step-by-step explanation:

\frac{a^{m}}{a^{n}}=a^{m-n}\\\\\\(a^{m})^{n} =a^{mn}

\frac{(4m^{2}n)^{2}}{2m^{5}n}=\frac{4^{2}(m^{2})^{2}n^{2}}{2m^{5}n}\\\\\\=\frac{16m^{4}n^{2}}{2m^{5}n}\\\\\\=\frac{8m^{4}n^{2}}{2m^{5}n}\\\\\\=8m^{(4-5)}n^{(2-1)}\\\\\\=8m^{-1}n

7 0
3 years ago
Solve the equation x – 5 = 0.1(x + 5) for x. Round your answer to the nearest hundredth.
bezimeni [28]

Answer:

Hello!

To solve for x, you need to follow SADMEP. SADMEP is subtraction, addition, division, multiplication, exponents, and parentheses. It follows the same rules as PEMDAS, but SADMEP is only used when solving algebraic equations.

x - 5 = 0.1(x + 5) (use the distributive property)

x - 5 = 0.1x + 0.5 (subtract 0.1x to both sides)

0.9x - 5 = 0.5 (add 5 to both sides)

0.9x = 5.5 (divide both sides by 0.9)

x = 6.1111... | This can be rounded to 6.11 km/hour.

Therefore, Kelli can swim about 6.11 kilometers per hour.

Hope this helps :D

Mark me brainliest if its good, i know its right though (:

4 0
3 years ago
Other questions:
  • 2x^3y + 18xy - 10x^2y - 90y Part A: Rewrite the expression so that the GCF is factored completely.
    6·1 answer
  • a bag of concrate can be used to make a 5ft by 7ft porch.if you want to make a 20ft by 28ft,porch. how many bags of concreate do
    12·2 answers
  • emily went to see a film at the local cinema.it started at quarter past two in the afternoon.it took her 25 minutes to walk from
    13·2 answers
  • PLS HELP URGENT MAX AMOUNT OF POINTS WILL BE GIVEN AND PLS DO NOT ANSWER IF UNSURE OR YOU WILL BE REPORTED BY ME AND BRAINLIEST
    15·1 answer
  • Which graph represents an odd function?
    13·2 answers
  • 28 should be multiplied by ------------ to get a perfect square
    6·2 answers
  • Plss help meeeeeeeeeeeeeeee
    12·2 answers
  • Simplify<br> ( 3w + 7 ) + ( 2w + 5)
    11·1 answer
  • Factor the polynomial expression.<br> 1+1
    10·2 answers
  • At Johnson's Pharmacy, tissue boxes can be purchased as single boxes or in packs of three boxes. During January, Johnson's sells
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!