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2 years ago

For some event A, what does it mean if P(A)= 0.84?

Mathematics

1 answer:

Aleksandr [31]2 years ago

3 0

Answer:

The probability of A happening is 84 percent

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Inverse equation t=120r/r+120 R=???

Komok [63]

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Answer:

r = 120t/(120-t)

Step-by-step explanation:

Multiply by the denominator, isolate r terms, then divide by the coefficient of r.

$t=\dfrac{120r}{r+120}\qquad\text{given}\\\\t(r+120)=120r\qquad\text{multiply by $(r+120)$}\\\\120t=120r-tr\qquad\text{subtract $tr$}\\\\\dfrac{120t}{120-t}=r\qquad\text{divide by the coefficient of $r$}\\\\\boxed{r=\dfrac{120t}{120-t}}$

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2 years ago

Help brainliest to who help

Aleks04 [339]

$\\ \sf\longmapsto 7x-10=9x-44$

$\\ \sf\longmapsto 9x-7x=-10+44$

$\\ \sf\longmapsto 2x=34$

$\\ \sf\longmapsto x=17°$

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2 years ago

271,403 to the nearest hundred thousand

11Alexandr11 [23.1K]

Answer: Your answer would be 300,000

Step-by-step explanation: Hope this helped

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2 years ago

What is 5 divided by 25

disa [49]

Answer:

0.2

Step-by-step explanation:

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2 years ago

Read 2 more answers

Andrea has some money. Her brother gives her 7 coins worth 23 cents and now she has 73 cents. If she started with 5 coins, what

Nat2105 [25]

Andrea had 5 coins worth 50 cents ! And , thereafter her brother gave her 7 coins worth 23 cents .

<u>Step-by-step explanation:</u>

Here we have , Andrea has some money. Her brother gives her 7 coins worth 23 cents and now she has 73 cents. If she started with 5 coins, We need to find what coins did Andrea's brother give her and what coins did Andrea start with. Let's find out:

Andrea has some money , and her brother gives her 7 coins ! worth 23 cents . So , 1 coin worth is :

⇒ $\frac{23}{7}$

⇒ $3.29cents$

Now , she had a total of 73 cents i.e.

⇒ $73 = x+23$

⇒ $x=50$

Initially Andrea had 5 coins worth 50 cents ! And , thereafter her brother gave her 7 coins worth 23 cents .

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3 years ago