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
Varvara68 [4.7K]
2 years ago
10

Alice joue à un jeu sur son smartphone et fait 3 parties. Dans ce jeu, on peut gagner des pièces d’une partie à l’autre et en dé

penser pour améliorer son personnage.
A la 1ère partie, Alice double son nombre de pièces et en dépense ensuite 30.
A la 2ème partie, Alice triple son nombre de pièces et en dépense 54.
A la 3ème partie, elle quadruple son nombre de pièces et en dépense 72.
Il lui reste alors 48 pièces. Combien de pièces avait-elle au départ ?
C'est des équations svp vous pouvez m'aider je n'y arrive vraiment pas (expliquer pls j'aimerais comprendre)
Mathematics
1 answer:
qwelly [4]2 years ago
3 0

Answer:

sorry, i dont understand french

Step-by-step explanation:

You might be interested in
Find the axis of symmetry of 2x^2 + 12x + 16 Show your work
raketka [301]

The vertex form:

y=a(x-h)^2+k\\\\(h,\ k)-vertex

The axis of symetry is x = h.

y=ax^2+bx+c\to h=\dfrac{-b}{2a}

We have

y=2x^2+12x+16\to a=2,\ b=12,\ c=16

Substitute:

h=\dfrac{-12}{(2)(2)}=\dfrac{-12}{4}=-3

<h3>Answer: x = -3</h3>
6 0
3 years ago
Suppose that contamination particle size (in micrometers) canbe modeled as
asambeis [7]

Answer:

c) 2

d) 0.96

Step-by-step explanation:

We are given the following in the question:

f(x) = 2x^{-3}, x > 1\\~~~~~~~= 0, x \leq 1

a) probability density function.

\displaystyle\int^{\infty}_{\infty}f(x) dx = 1\\\\\displaystyle\int^{\infty}_{-\infty}2x^{-3}dx = 1\\\\\displaystyle\int^{\infty}_{1}2x^{-3}dx\\\\\Rightarrow \big[-x^{-2}\big]^{\infty}_1\\\\\Rightarrow -(0-1) = 1

Thus, it is a probability density function.

b) cumulative distribution function.

P(X

c) mean of the distribution

\mu = \displaystyle\int^{\infty}_{-\infty}xf(x) dx\\\\\mu = \int^{\infty}_12x^{-2}dx\\\\\mu = (-\frac{2}{x})^{\infty}_{1}\\\\\mu = 2

d) probability that the size of random particle will be less than 5 micrometers

P(X

4 0
2 years ago
Solve for x I don't know how to solve it​
mixer [17]

Answer:

x=-12

Step-by-step explanation:

32+2x=6+x+14

2x-x=6+14-32

x=-12

ST=6

TU=-12+14=2

SU=6+2=8

8 0
3 years ago
Find the value of x. Leave your answer in simplest radical form.
FrozenT [24]
Hypotenuse:
(WORK SHOWN BELOW)

4 0
2 years ago
Find the value of x in this<br> equation<br> (6x + 1) - 3x = (2x - 1)<br> Help pls ASAP
mamaluj [8]

Answer:

x = -2

Step-by-step explanation:

7 0
3 years ago
Other questions:
  • Stephon is buying some snacks for his siblings at a convenience store. He wants to buy at least 6 items, but he has only $12 in
    5·1 answer
  • What is the solution of x+y=2 and 2x+5y=16
    14·1 answer
  • Seraphina is driving two hours to visit her family. For the first hour, she traveled at a speed of 59 miles per hour. Then, in t
    11·1 answer
  • Jordan has 55 dollars she earns 67 dollars by doing cores how much money does jordan have now
    12·1 answer
  • Your cousin wants to buy a coat and can spend at most $95. He has a coupon for $20 off any coat. Write an inequality to find the
    12·1 answer
  • Five members of the soccer team ordered orange juice. Ten members ordered apple juice. Juice was packaged in 250 mL cartons. Exp
    5·1 answer
  • Find the sum of the finite geometric series: 5 + 10 + 20 + ... +81,920.
    5·1 answer
  • Right answer will get brainlist.
    8·1 answer
  • What is the answer for this question
    12·2 answers
  • A credit card company applies a 6% fee on all transactions under $10. You purchased coffee for $4.80. What fee amount will be ap
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!