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3 years ago

Half - life is

Mathematics

1 answer:

Aleonysh [2.5K]3 years ago

8 0

Answer:

the amount of time it takes for approximately 50% of a radioactive atom sample to undergo nuclear decay

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3,600<br> The square roots are<br> and

ehidna [41]

Answer:

Step-by-step explanation:

60x60=3,600

6 0

3 years ago

En una tienda de ropa vas a comprarte una pantalones que están de 150 a 90 euros y una camiseta de 40 a 24 ¿ tienen el mismo por

uranmaximum [27]

Respuesta:

Sí, tienen el mismo descuento del 40%

Explicación paso a paso:

Dado :

PANTALÓN :

Precio inicial = 150

Precio con descuento = 90

Porcentaje de descuento en el precio:

(150 - 90) / 150 * 100%

60/150 * 100%

0,4 * 100

= 40%

CAMISA:

Precio inicial = 40

Precio con descuento = 24

Porcentaje de descuento en el precio:

(40-24) / 150 * 100%

16/40 * 100%

0,4 * 100

= 40%

Sí, tienen el mismo descuento del 40%

8 0

3 years ago

A pharmacist added 50 g of drug to make a total of 200 mL of solution. What is the percentage of drug in the resultant solution?

Bad White [126]

Answer: 25%

Step-by-step explanation:

Given : A pharmacist added 50 g of drug to make a total of 200 mL of solution.

Here, Resultant solution = 200 mL

Amount of drug = 50 g

We know that 1 gram = 1 ml

So, we can say the amount of drug = 50 ml

Now, the percentage of drug in the resultant solution:-

$\dfrac{50}{200}\times100=25\%$

Hence, the percentage of drug in the resultant solution= 25%

6 0

3 years ago

Luis is packing his bags for his vacation he has 9 unique toy animals but only 5 fit in his bag how many different groups of 5 t

Eva8 [605]

Answer:

126 groups

Step-by-step explanation:

we know that

This is a combination problem, because the order doesn't matter. He has 9 toys and wants to know the number of different combinations of 5 he can take.

The formula for the number of possible combinations of r objects from a set of n objects is given by

$^nC_r=\frac{ {n!}}{r!(n-r)!}$

In this problem we have

$n=9, r=5$

substitute

$^9C_5=\frac{ {9!}}{5!(9-5)!}$

$^9C_5=\frac{ {9!}}{5!(4)!}$

$^9C_5=\frac{ {(9)(8)(7)(6)5!}}{5!(4)!}$

$^9C_5=\frac{ {9)(8)(7)(6)}}{(4*3*2*1)}$

$^9C_5=126$

7 0

3 years ago

What multiples to give you -30 and adds to give you -13

vekshin1

Answer:

This is impossible

Step-by-step explanation:

But try -10x-3=30 -10+-3=-13

6 0

2 years ago