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marta [7]
3 years ago
10

If you roll two dice, what is the probability that the numbers add to 7? Why?

Mathematics
2 answers:
juin [17]3 years ago
7 0

Answer:

1/6

Step-by-step explanation:

possible combinations are = 1-6,2-5,3-4,4-3,5-2,6-1

so probability= 6 * 1/36 = 1/6

Vinil7 [7]3 years ago
4 0

Answer:

For each of the possible outcomes add the numbers on the two dice and count how many times this sum is 7. If you do so you will find that the sum is 7 for 6 of the possible outcomes. Thus the sum is a 7 in 6 of the 36 outcomes and hence the probability of rolling a 7 is 6/36 = 1/6.

Step-by-step explanation:

.

You might be interested in
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
Solve 27 and 29, will give BRAINLIST!!
otez555 [7]

Answer:

see below

Step-by-step explanation:

27.

We can use ratios to solve

152 dollars     532 dollars

---------------- = ----------------

4 days              x days

Using cross products

152x = 4*532

152x =2128

Divide each side by 152

152x/152 = 2128/152

x =14

14 days

29.

1 inch        2/3 inches

------------ = ----------------

6.5 ft          x ft

Using cross products

1x = 2/3 * 6.5

x = 4.333333

c = 4 1/3 ft

5 0
3 years ago
Read 2 more answers
1. What is the solution to the equation<br> below?<br> -5/4x + 2/5 = -13/30
Artemon [7]

Answer:

2/3 or .6 repeating

Step-by-step explanation:

6 0
3 years ago
Alexa bought a pair of skis for dollar 450. She made a payment of dollar 120 and caught a student discount of dollar 40. Her mot
Sphinxa [80]
If Alexa's mom paid 1/2 of the $450:
$65

if Alexa's mom paid 1/2 of the remaining price:
$145


Alexa's mom paying 1/2 the $450:

$450 divided by 2 = $225
$225 - $120 = $105
$105 - $40 = $65
Alexa has $65 left to pay


Alexa's mom paying 1/2 of the remaining price after the student discount and Alexa payed $120:

$450 - $120 = $330
$330 - $40 = $290
$290 divided by 2 = $145

(hope this helped )
8 0
3 years ago
What is2.07 divided by0.9
Vinil7 [7]
2.07 divided by 0.9 is 2.3
4 0
3 years ago
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