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
telo118 [61]
3 years ago
8

Ofelia has a certain amount of money. If she spends $12, then she has 1/5 of the original amount left. How much money did Ofelia

have originally
Mathematics
1 answer:
ZanzabumX [31]3 years ago
7 0
X=amount of money Ofeila hasx-$12=(1/5)xLet's eliminate the fractions by multiplying both sides by 5...5(x-$12)=(5)(1/5)x5x-$60=xLet's subtract 5x from both sides...-5x+5x-$60=x-5x-$60=-4xLet's divide both sides by -4...(-$60)/(-4)=(-4x)/(-4)$15=x -< AnswerLet's check our work...x-$12=(1/5)x$15-$12=(1/5)($15)$3=$3
You might be interested in
La expresion 18+2^3 / 4x2
erik [133]
18+8/4x2
18+8/8
18+1
PEMAS
parentheses,
7 0
4 years ago
Ellen has a bag with 3 red marbles and 2 blue marbles in it. She is going to randomly draw a marble from the bag 300 times, putt
sweet [91]

Answer:

No. of times Ellen draws a blue marble = 120

Step-by-step explanation:

No. of red marbles = 3

No. of blue marbles = 2

\text{Probability of drawing a blue marble = }\frac{\text{No. of possible outcomes}}{\text{Total no. of outcomes}}\\\\P(B)=\frac{2}{5}\\\\No. of draws (n) = 300\\\text{So, total probability = }n\times P(B)\\\\=100\times \frac{2}{5}=120.

So, the required probability is 120.

7 0
3 years ago
Read 2 more answers
Select each of the following experiments that are binomial experiments:
Vinvika [58]

Answer:

a) No.

b) Yes.

c) Yes.

Step-by-step explanation:

a) No.

As being without replacement, the probabilities of each color in each draw change depending on the previous draws.

This is best modeled by an hypergeometric distribution.

b) Yes.

As being with replacement, the probabilities for each color is constant.

Also, there are only two colors, so the "success", with probability p, can be associated with the color red, and the "failure", with probability (1-p), with the color blue, for example.

(With more than two colors, it should be "red" and "not red", allowing only two possibilities).

c) Yes.

The answer is binary (Yes or No) and the probabilities are constant, so it can be represented as a binomial experiment.

8 0
3 years ago
Shapes I and II are <br> neither congruent nor similar<br> .
GarryVolchara [31]

Answer: They are similar but not congruent.

Step-by-step explanation: hope this help

7 0
3 years ago
Read 2 more answers
Justin is ordering an ice cream dessert. He must order a size, a flavor of ice cream, and a topping. There are 2 sizes, 2 flavor
Soloha48 [4]

Answer:

8

Step-by-step explanation:

because thats the answer

3 0
3 years ago
Other questions:
  • Add
    5·2 answers
  • Use properties of addition and subtraction to evaluate the expression.<br><br> −57−14−23
    6·2 answers
  • If you’re using the inspection method, what constant term would you need in the numerator of this rational expression for (x+5)
    6·2 answers
  • 11. Alexis and Mariana are hiking, Alexis
    5·2 answers
  • Round 12,351 to the nearest hundred
    15·1 answer
  • Find the value of the variable that results in congruent triangles. Explain. SAS (Side, Angle, Side) or ASA (Angle, Side, Angle)
    8·1 answer
  • Hoshiko owns one-fifth of a business. She sells her share for $15,000. What is the total value of the business?
    11·1 answer
  • Pls help it’s for a grade in math pls help
    8·2 answers
  • Javier walks from his home at point K to the Internet café at point O. If the school at point W is exactly halfway between Javie
    14·2 answers
  • 2(7x+4)=4x-6(2-x)+7what is the answer to this trigonometry question
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!