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
BigorU [14]
3 years ago
11

Please help me, I need help I don’t know what to do. Last question.

Mathematics
2 answers:
Marina86 [1]3 years ago
8 0
The complete answer is 5/21
Phantasy [73]3 years ago
4 0

Answer:

B. 5/21 chance

Step-by-step explanation:

The probability he gets the black marker first is 5/7. The probability he gets a blue marker after his black marker not replaced is 2/6 or 1/3. 1/3*5/7 is 5/21

You might be interested in
Consider parallelogram ABCD. If AC¯¯¯¯¯¯¯¯=2x+15 and BD¯¯¯¯¯¯¯¯=5x−12, what does the value of x need to be so that the parallelo
Marianna [84]

Answer:

9

Step-by-step explanation:

I took the quick check

4 0
3 years ago
El administrador de una cafetería sabe que vende diariamente 50 litros de jugo mixto. Para elaborar este jugo se emplean dos pre
Nina [5.8K]

Answer:

Se necesitan 37.5 litros del preparado que contiene 5% de jugo natural, y 12.5 litros del que contiene 25%.

Step-by-step explanation:

Primero calculamos la cantidad total de jugo natural que se necesita, a partir del volumen de jugo mixto que se quiere vender:

  • 50 L * 10/100 = 5 L

Ahora, que X sean los litros del preparado con jugo de 5%, y que Y sean los litros del preparado con jugo de 25%:

La suma de ambos preparados tiene que ser 50 L:

1.    x + y = 50

La suma del jugo natural tiene que ser 5:

2.   x*5/100 + y*25/100 = 5

Por lo que tenemos <em>un sistema de dos ecuaciones y dos incognitas</em>.

Expresamos x en términos de y:

  • x + y = 50
  • x = 50 - y

Reemplazamos x en la segunda ecuación:

  • (50-y)*5/100 + y*25/100 = 5

Y despejamos <em>y</em>:

  • 2.5 - 0.05y + 0.25y = 5
  • 0.20y = 2.5
  • y = 12.5

Usando ese valor de y, calculamos x:

  • x + 12.5 = 50
  • x = 37.5

7 0
3 years ago
5x - 5 - 3x + 2 = 0 what is the value of x
SCORPION-xisa [38]

Answer:

x = 1.5

Step-by-step explanation:

5x - 5 - 3x + 2 = 0

Combine like terms

2x - 3 = 0

Isolate variable x

Add 3 to both sides

2x = 3

Divide both sides by 2

x = 3 ÷ 2

x = 1.5

5 0
4 years ago
The aquarium has 3 more yellow fish than green fish. 60 percent of the fish are yellow. How many green fish are in the aquarium?
balu736 [363]

Answer:

6 green fish

Step-by-step explanation:

green fish = x

(X+3)/60  =  x/40

Cross multiplication

60x = 40x+120

subtract 40x on both sides

20x = 120

Divide both sides by 20

x=6

The aquarium has 3 more yellow fish than green fish  6+3 = 9 (9 yelow)

15 fish in total

60% of 15 = 9

40% of 15 = 6

8 0
3 years ago
What is the value of k(-3) when k(t) = -|4t|
Fantom [35]

Answer:

-12

Step-by-step explanation:

You can find the value of k(-3) by substituting t = -3 into the absolute value function k(t) = -|4t|.

k(-3) = -|4*-3| = -|-12| = -12

6 0
3 years ago
Other questions:
  • Brigitte is shorter than 5 feet briquettes height = h
    8·1 answer
  • If x&lt;5 and x&gt;c, give a value of c such that there are no solutions to the compound inequality. Explain why there are no so
    9·1 answer
  • You move down 4 units and right 2 units. You end at (1, -4). Where did you start?
    12·2 answers
  • The high temperature will be at least 75 degrees today write an equality
    15·1 answer
  • The length of time needed to complete a certain test is normally distributed with mean 57 minutes and standard deviation 8 minut
    15·1 answer
  • 1 2/7 divided by (-2 1/4)
    7·2 answers
  • The height of the doorway is 7 feet less than 5 times its width. if the area is 24 square feet, find the dimensions of the door
    9·1 answer
  • there are 4 pizzas and 3 people. how much would each eraser get if each person eats the same amount.​
    15·1 answer
  • If cos t = 2/3 find sin t
    11·1 answer
  • Which of the following could be the interpretation of the distance vs time graph shown?
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!