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2 years ago

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7. The probability that a person living in a certain city owns a dog is estimated to be 0.3. Find the probability that the tenth

person randomly interviewed in that city is the fifth one to own a dog.

1 answer:

STALIN [3.7K]2 years ago

4 0

Answer:lol can somebody please answer this I need an answer I have this question

Step-by-step explanation:

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Please help with these two math problems<br><br> 1. 7^x ÷ 7^y =<br> 2. z^10x^y ÷ z^5 =

IceJOKER [234]

Answer:

1. 7^(x-y)

2. z^5x^y

Step-by-step explanation:

The applicable rule of exponents is ...

(a^b)/(a^c) = a^(b-c)

__

1.

$\dfrac{7^x}{7^y}=\boxed{7^{x-y}}$

__

2.

$\dfrac{z^{10}x^y}{z^5}=x^yz^{10-5}=\boxed{z^5x^y}$

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3 years ago

How much money do you earn in 1 hour if you earn 20 in 4 hours

VikaD [51]

Answer:

let’s make a Unit rate.

$20/4 hours = $5 per hour

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2 years ago

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Help the sista out cause it boring

Snowcat [4.5K]

Answer:

B

Step-by-step explanation:

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2 years ago

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17x-3y=4 2x-4y=1 the solution to the system of equations is

Burka [1]

ANSWER

$x=\frac{13}{62}$

and

$y= \frac{-9}{62}$ e have

EXPLANATION

$17x-3y=4---(1)$

$2x-4y=1$

Let us make y the subject and call it equation (2)

$2x=1+4y$

$x=\frac{1}{2}+2y--(2)$

We put equation (2) in to equation (1)

$17(\frac{1}{2}+2y)-3y=4$

$\frac{17}{2}+34y-3y=4$

$34y-3y=4- \frac{17}{2}$

Simplify to get,

$31y= \frac{8-17}{2}$

$31y= \frac{-9}{2}$

Divide both sides by 31,

$y= \frac{-9}{2} \div 31$

$y= \frac{-9}{2} \times \frac{1}{31}$

$y= \frac{-9}{62}$

We put this value in to equation (2) to get,

$x=\frac{1}{2}+2\times -\frac{9}{62}$

$x=\frac{1}{2} -\frac{18}{62}$

We collect LCM to obtain,

$x=\frac{31-18}{62}$

$x=\frac{13}{62}$

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2 years ago

Can someone please help me!!! I need help, no links !!!

Sholpan [36]

Give me a few and I will

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2 years ago