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quester [9]
3 years ago
8

if you are given 80 grams of a radioactive element and told that its half-life is 10 years. How much will be left of the substan

ce after 20 years.​
Mathematics
1 answer:
Phantasy [73]3 years ago
4 0

Answer:

20 grams

Step-by-step explanation:

20 years is 2 half lives

1/2 * 1/2 = 1/4

1/4 * 80 = 20 grams

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Martha is following a recipe for 13 liters of punch that uses 8 liters
trasher [3.6K]

Answer:

For every 1 liter of lemonade Martha has to add 1.6 liters of pineapple juice.

The ratio of liters of pineapple juice to liters of punch is 8:13

Step-by-step explanation:

13 - 8 = 5

5 divided by 5 is 1

8 divided by 5 is 1.6

8 0
3 years ago
Find the mode of the following data: 5, 0, 5, 4, 12, 2, 14
Arte-miy333 [17]

Answer:

5

Step-by-step explanation:

5 0
3 years ago
Which of the following relations are functions?
Alisiya [41]
<span>{(c,e),(c,d),(c,b)} is NOT a function since the input c has multiple outputs (e,d,b). So choice B is out

</span><span>{(b,b),(c,d),(d,c),(c,a)} is NOT a function either. The input 'c' corresponds to the output 'd' and 'a' at the same time. So choice C is out too
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Choices A and D are the answer. They are functions since any given input corresponds to exactly one output. 

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7 0
3 years ago
Read 2 more answers
2. Un auto viaja a 60 km/h y se detiene a los 2 segundos. qué distancia recorrió en el
posledela

Se calcula que la aceleración es - 8,35 m/s.

<h3 /><h3>¿Qué es la aceleración?</h3>

Ahora sabemos lo siguiente de la pregunta;

Velocidad inicial (u) = 60 km/h o 16,7 m/s

Tiempo empleado (t) = 2 s

Dado que;

v = tu + en

v = 0 m/s porque el carro se detenía

tu = -en

a = -(u/t)

 a= -1(6,7 m/s/2 s)

a =- 8,35 m/s

La aceleración es negativa porque la velocidad disminuye con el tiempo.

Obtenga más información sobre la aceleración: brainly.com/question/12550364

#SPJ1

5 0
2 years ago
The table show whether a bus pass is a child’s or adult’s pass and whether it is a daily or monthly pass
PolarNik [594]

Answer:

50.8%

Step-by-step explanation:

That is the one my friend and I chose. It is 31/61 when all the stuff is added together and that is put to 50.8 as a percentage..

3 0
3 years ago
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