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3 years ago

10

There are 10 mangoes inside the basket. Each mango weighs 50grams.Approximately, what is the weight the basket if the basket wit

h the mangoes inside of it weighs 600gram?

1 answer:

deff fn [24]3 years ago

4 0

Answer:

100 grams.

Step-by-step explanation:

600-(10*50). You're subtracting the weight of 10 mangoes (50 grams for each mango) from 600 grams, which will give you the weight of the basket.

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Mr. O'Connor had $90 to spend at a football game. He spent 31/45 on his ticket. Then, he spent 3/7 of his remaining money at the

Kobotan [32]

He has $90 in total to spend

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so money spent on ticket =(31/45) *90 =2790/45 =62

Now money left with him is 90-62 =28 $

Now it says that he spent (3/7) of this remaining money at concession stand

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Now money left with him = 28-12 =16

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So Mr. O'Connor didnt have enough moeny to buy the hat

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3 years ago

If f(x) = 5x + 4, which of the following is the inverse of Ax)?

Levart [38]

Answer:

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Step-by-step explanation:

let y = f(x) and rearrange making x the subject, that is

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change x to $f^{-1}$ (x) and y back to x, thus

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The amount of substance left of a radioactive element of half life, $t_{\frac{1}{2}}$ after a time, t, is given by:

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Given that <span>potassium-40 has a half life of approximately 1.25 billion years.

The number of years it will take for 0.1% of potassium-40 to remain is obtained as follows:

$0.1=100\left( \frac{1}{2} \right)^ \frac{t}{1.25}} \\ \\ \Rightarrow\left( \frac{1}{2} \right)^ \frac{t}{1.25}}=0.001 \\ \\ \Rightarrow\frac{t}{1.25}\ln\left( \frac{1}{2} \right)=\ln(0.001) \\ \\ \Rightarrow \frac{t}{1.25}= \frac{\ln(0.001)}{\ln\left( \frac{1}{2} \right)} =9.966 \\ \\ t=9.966(1.25)=12.5$

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