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2 years ago

Math help please!!!!!!!!!!!!

Mathematics

1 answer:

KonstantinChe [14]2 years ago

7 0

The answer to the question is B

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Can someone please help me with these questions

MatroZZZ [7]

1.c 2. b 3. b 4.a 5.b 6.c these are the correct answers

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3 years ago

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Half-life of Po-210 is 140 days. If the initial mass of the sample is 5

Anna35 [415]

Answer:

$0.625kg$

Step-by-step explanation:

we are given half-life of PO-210 and the initial mass

we want to figure out the remaining mass after 420 days

in order to solve so we can consider the half-life formula given by

$\displaystyle f(t) = a {0.5}^{t/T}$

where:

f(t) is the remaining quantity of a substance after time t has elapsed.
a is the initial quantity of this substance.
T is the half-life

since it halves every 140 days our T is 140 and t is 420. as the initial mass of the sample is 5 our a is 5

thus substitute:

$\displaystyle f(420)=5\cdot{0.5}^{420/140}$

reduce fraction:

$\displaystyle f(420)=5\cdot{0.5}^{3}$

By using calculator we acquire:

$\displaystyle f(420)=0.625$

hence, the remaining sample after 420 days is 0.625 kg

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2 years ago

What is the percentage of sugar in the syrup made of 10kg of water and 5kg of sugar? Hi and have a good day :D

arsen [322]

Answer:

33.33%

Step-by-step explanation:

the syrup has a total of 15kg of ingredients, 5kg of it is sugar, so 15/5 which will end as 33.33%

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2 years ago

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Is h(x)=23 a linear function or no? Explain.

svet-max [94.6K]

Ofcourse it is a linear function
why because every of x value of this function is 23 in result always

... so when we draw a chart it will be line on 23 coordinate ;)

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2 years ago

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180 euros to exchange rate 1.2 to the pound

BaLLatris [955]

Your answer is 138.61440

Hope this helps.

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2 years ago