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
Sidana [21]
3 years ago
11

Gabby purchased a pair of ear phones online for $12. She purchased the ear phones at 60% of the store price. What was the store

price of the ear phones ?
Mathematics
1 answer:
torisob [31]3 years ago
3 0

Answer:

The answer of your question is: $20

Step-by-step explanation:

Data

price $12

60% of the store price

Solve it using an inverse rule of three

                           $12 -------------------  60%

                             x  --------------------  100%

        x = 100(12) / 60 = $20

You might be interested in
The area of a isosceles trapezoid height of 8 base of 10 base of 15
ikadub [295]

Answer:

A = 100 un^{2}

Step-by-step explanation:

You have to use the area of a trapezoid formula:

A = \frac{h}{2}(a + b)

Now, substitute the values of the height and the bases:

A = \frac{8}{2}(10 + 15)

Finally, simplify the equation to solve for the area:

A = 4(25)

A = 100 un^{2}

6 0
3 years ago
What is the simplified form of 2 times 10 squared to the second power in standard notation?
Semmy [17]
<span>2 times 10 squared to the second power in standard notation

2 x(10^2)^2
=2x10^4
=20000</span>
4 0
3 years ago
Read 2 more answers
Memory module consists of 9 chips. The device is designed with redundancy so that it works even if one of its chips is defective
soldier1979 [14.2K]

Answer:

a) P[C]=p^n

b) P[M]=p^{8n}(9-8p^n)

c) n=62

d) n=138

Step-by-step explanation:

Note: "Each chip contains n transistors"

a) A chip needs all n transistor working to function correctly. If p is the probability that a transistor is working ok, then:

P[C]=p^n

b) The memory module works with when even one of the chips is defective. It means it works either if 8 chips or 9 chips are ok. The probability of the chips failing is independent of each other.

We can calculate this as a binomial distribution problem, with n=9 and k≥8:

P[M]=P[C_9]+P[C_8]\\\\P[M]=\binom{9}{9}P[C]^9(1-P[C])^0+\binom{9}{8}P[C]^8(1-P[C])^1\\\\P[M]=P[C]^9+9P[C]^8(1-P[C])\\\\P[M]=p^{9n}+9p^{8n}(1-p^n)\\\\P[M]=p^{8n}(p^{n}+9(1-p^n))\\\\P[M]=p^{8n}(9-8p^n)

c)

P[M]=(0.999)^{8n}(9-8(0.999)^n)=0.9

This equation was solved graphically and the result is that the maximum number of chips to have a reliability of the memory module equal or bigger than 0.9 is 62 transistors per chip. See picture attached.

d) If the memoty module tolerates 2 defective chips:

P[M]=P[C_9]+P[C_8]+P[C_7]\\\\P[M]=\binom{9}{9}P[C]^9(1-P[C])^0+\binom{9}{8}P[C]^8(1-P[C])^1+\binom{9}{7}P[C]^7(1-P[C])^2\\\\P[M]=P[C]^9+9P[C]^8(1-P[C])+36P[C]^7(1-P[C])^2\\\\P[M]=p^{9n}+9p^{8n}(1-p^n)+36p^{7n}(1-p^n)^2

We again calculate numerically and graphically and determine that the maximum number of transistor per chip in this conditions is n=138. See graph attached.

6 0
4 years ago
Someone help ASAP please !! I’ll vote Brainliest !
alukav5142 [94]

Answer:

<u>2nd row</u>

Step-by-step explanation:

The y-intercept corresponds to the ordered pair having an x-value of 0. The second row of the table has an x-value of 0, and y-value of 2. Therefore, the y-intercept is (0, 2).

6 0
2 years ago
What two products do you get when you cross-multiply the fractions 2/5 and 3/8?
jarptica [38.1K]
Answer: a. 10 and 12

explanation:
4 0
3 years ago
Other questions:
  • Select the correct answer from each drop-down menu.
    5·1 answer
  • The function y=-16x^2+36 represents the height y (in feet) of an apple x seconds after falling from a tree. Find and interpret t
    10·1 answer
  • Which set of shapes contains members that are always similar to one another?
    9·2 answers
  • Please help ASAP.
    11·2 answers
  • I will also give brainliest on this one What’s the surface area of this round to the tenth if you have to
    13·1 answer
  • The role that an organism plays within the area it lives is known as its
    14·1 answer
  • PLEASE HELP RN
    8·2 answers
  • 5 3/4 divided by 2 1/4
    6·1 answer
  • The product of 7 and a number is greater than 42. If the number is a whole number less than 10 , what could the number be?
    11·1 answer
  • Who knows how to sketch this kind of graph
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!