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77julia77 [94]
3 years ago
11

4. HELP ME PLS W THE CORRECT ANSWER

Mathematics
1 answer:
Shalnov [3]3 years ago
4 0
Please low south windows
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There are 15 rolls of film in a box and 3 are defective. Two rolls are to be selected, one after the other. What is the probabil
dem82 [27]
<h2>Answer:</h2><h2>The probability of selecting a defective roll followed by another defective roll = \frac{1}{35}</h2>

Step-by-step explanation:

The total number of rolls in a box = 15

The number of defective items = 3

Two rolls are to be selected, one after the other. The probability of selecting a defective roll followed by another defective roll = ?

The probability that the first roll is detective = \frac{3}{15}

The probability that the second roll is detective = \frac{2}{14}

Required probability = (\frac{3}{15} ) (\frac{2}{14} )

= \frac{1}{35}

7 0
3 years ago
4 gal = how many quarts
Vikki [24]
1 gal = 4 quarts 
so
4 gal = 16 quarts
8 0
3 years ago
Read 2 more answers
Un estudiante debe recorrer dos tercios de kilómetro para llegar al colegio, si avanza medio kilómetro en bus y lo demás a pie ¿
Murljashka [212]

Answer:

Al estudiante le falta caminar \frac{1}{3} de kilómetro.

Step-by-step explanation:

Un estudiante debe recorrer dos tercios de kilómetro para llegar al colegio. Dos tercios equivale a la fracción \frac{2}{3} .

El estudiante avanza medio kilómetro en bus. Un medio equivale a la fracción \frac{1}{2}, por lo tanto un medio es la mitad de una cantidad.  Para calcular la distancia recorrida en bus se realiza la siguiente multiplicación:

\frac{1}{2} *\frac{2}{3}

Resolviendo:

\frac{1}{2} *\frac{2}{3} =\frac{1*2}{2*3} =\frac{2}{6} =\frac{1}{3}

Entonces, la distancia recorrida en bus es \frac{1}{3} de kilómetro.

Para calcular la distancia recorrida a pie se calcula la diferencia entre la distancia total a recorrer por el estudiante y la distancia recorrida en bus. Esto es:

\frac{2}{3} - \frac{1}{3}

Resolviendo:

\frac{2}{3} - \frac{1}{3}=\frac{2-1}{3} =\frac{1}{3}

<u><em>Al estudiante le falta caminar </em></u>\frac{1}{3}<u><em> de kilómetro.</em></u>

6 0
3 years ago
The triangles in the figure are similar: ΔABC ∼ ΔDEF. Which of the following statements must be true? options: A) AB/DE=BC/EF=CA
VikaD [51]

Answer:

Answer A

Step-by-step explanation:

We see that ABC is similar to DEF. Pay attention to the order of these letters. The order that they read (left-to-right) is the order that they are similar. For example, AB is similar to DE. Despite being different triangles, they are both the <em>first two </em>letters in the triangle. So, knowing this, we can conclude that answer choice A is correct.

7 0
4 years ago
Read 2 more answers
Please help me I don’t understand this
IrinaVladis [17]

Answer:

perfect sq=4/25,9,36

perfect cube=8/125,1/27

both=1,64

6 0
3 years ago
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