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
atroni [7]
3 years ago
11

PROCEDIMIENTO POR FAVOR

Mathematics
1 answer:
Allisa [31]3 years ago
8 0

Responder:

Número total de bolas = 245/23

Explicación paso a paso:

Dado que:

Bolas blancas = 1/5

Bolas negras = 1/7

Bolas rojas = 7

Sea el número total de bolas = x

Bolas blancas = 1 / 5x

Bolas negras = 1 / 7x

Por tanto, total;

(x / 5 + x / 7 + 7) = x

((7x + 5x) / 35) +7 = x

(12x / 35) + 7 = x

7 = x - 12x / 35

7 = (35x - 12x) / 35

7 = 23 veces / 35

245 = 23x

x = 245/23

You might be interested in
What's 5x - 4x to the second power + 3 in standees form?
Pani-rosa [81]
(5x - 4x)² + 3

(5x - 4x)(5x - 4x) + 3

Simplify.

25x² - 20x² - 20x² + 16x² + 3

Add like terms.

(25x² - 20x²) + (-20x² + 16x²) + 3

Simplify.

5x² - 4x² + 3

Simplify once more.

x² + 3

~Hope I helped!~
5 0
4 years ago
Factor the expression 3x²-7x+4 completely ​
jeyben [28]

Answer:

2x+4

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
Can someone please explain to me how to solve this problem? I have the answer already all I need is to know how to solve the pro
omeli [17]

Answer:

Step-by-step explanation:

you have two supplementary angles,

both added up=180

7y+5y=12y

12y=180y=15

angle DBC=7y=15*7=105

5 0
3 years ago
Read 2 more answers
How much of earth's surface is covered by water,including both salt and fresh water?
Crank

Answer:

About 71% of Earth's surface is covered in water.

Step-by-step explanation:

About 97% of Earth's water is salt water.

About 3% of Earth's water is fresh water.

7 0
3 years ago
12. Alexa solves an equation using the steps below as her first three steps. Step 1: 3(x - 4) = x + 8 Step 2: 3x - 12 = x + 8 St
Nitella [24]

Answer:

B. Subtracted x

Step-by-step explanation:

5 0
2 years ago
Read 2 more answers
Other questions:
  • When John bought his new computer he purchased an online computer help service. The help service has a yearly fee of 25.50 and a
    8·1 answer
  • Okay so I am trying to raise $16,000.00 in 6 months at the most. I am only 14 and have bit of protective parents. Legally I can
    13·1 answer
  • a rectangular prism has a width of 8cm, a height of 5cm and a depth of 2cm. what’s the volume of the prism
    5·2 answers
  • If you can buy 1⁄2 of a gallon of milk for 3 dollars, how many gallons can you buy for 5 dollars? Write your answer as a fractio
    5·1 answer
  • One half of the birds at a pet store are yellow. Tara buys one of the yellow birds. Then one third of the birds at the store are
    5·2 answers
  • What is the GCF of 100 and 20
    8·1 answer
  • What is the measure of the complement of each angle? 87 degrees
    13·1 answer
  • Amy's car gets 32 miles per gallon. If her car's tank holds 15 gallons of gas, and she wants to keep a minimum of 1 gallon of ga
    6·1 answer
  • an athlete eats 55g of protein per day while training. how much protein will she eat during 17 days or training?
    13·1 answer
  • There are 16 fruits on the table. Maria has
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!