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3 years ago

If AB=9 and A lies at 5 where could B be located

Mathematics

2 answers:

IgorLugansk [536]3 years ago

3 0

B would be at 4 since b+5 = 9

subtract 5 from both sides
b = 4

Pachacha [2.7K]3 years ago

3 0

B would be 4 because 9(AB)-5(A)= 4(B).

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What is the percent increase of 40 ticket sales to 60 ticket sales?

Morgarella [4.7K]

Answer:

50%

Step-by-step explanation:

60-40=20

20/40*100=50

6 0

4 years ago

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Molecules of a toxic chemical eventually decompose into inert substances. Suppose the decomposition time is exponentially distri

koban [17]

Answer:

a) 4.16 years

b) 27.73 years

c) 238.44 years

d) 3,870.53 years

Step-by-step explanation:

Let X be the random variable that measures the decomposition time.

$\bf \lambda =6$

In this case, since the decomposition time is exponentially distributed with a mean of 1/6, we have

$\bf P(X\leq t)=1-e^{-t/6}\Rightarrow P(X>t)=1-(1-e^{-t/6})=e^{-t/6}$

and we must find a t such that P(x>t)=0.5.

$\bf P(X>t)=0.5\Rightarrow e^{-t/6}=0.5\Rightarrow -t/6=ln(0.5)\Rightarrow t=-6ln(0.5)=4.16\;years$

$\bf \lambda =40$

$\bf P(X>t)=0.5\Rightarrow e^{-t/40}=0.5\Rightarrow -t/40=ln(0.5)\Rightarrow t=-40ln(0.5)=27.73\;years$

$\bf \lambda =344$

$\bf P(X>t)=0.5\Rightarrow e^{-t/344}=0.5\Rightarrow -t/344=ln(0.5)\Rightarrow t=-344ln(0.5)=238.44\;years$

$\bf \lambda =5584$

$\bf P(X>t)=0.5\Rightarrow e^{-t/5584}=0.5\Rightarrow -t/5584=ln(0.5)\Rightarrow t=-5584ln(0.5)=3870.53\;years$

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4 years ago

Look at the table showing prices of different items at a store.

kati45 [8]

The types of items that cost less than $3.75 per item are Paperbacks and notebooks.

<h3>How do we determine the price of a unit item in a word problem?</h3>

The price of a unit item can be determined by dividing the total price by the number of units sold.

Given that:

Paperbacks sold 3 units for $10.65;

1 unit will be sold for = $10.65/3 = $3.55

Notebooks sold 4 units for $14.36;

1 unit will be sold for = $14.36/4 = $3.59

Puzzles sold 3 units for $11.85;

1 unit will be sold for = $11.85/3 = $3.95

Picture frame sold 4 units for $15.20;

1 unit will be sold for = $15.20/4 = $3.80

Therefore, from the above calculations, we can conclude that the types of items that cost less than $3.75 per item are Paperbacks and notebooks.

Learn more about calculating the unit price of an item here:

brainly.com/question/5028370

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2 years ago

Which graph represents f(x) = (x + 2)2 – 3?

vova2212 [387]

Answer: the first graph i remembered but they could have changed it it's will be better if you took a picture of the graph

Step-by-step explanation:

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3 years ago

Can please someone help me please

Aleksandr [31]

Answer:

I believe that the answer is option B.

Step-by-step explanation:

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3 years ago

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