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yulyashka [42]
3 years ago
13

12 ^3 over 12 ^ 7 please help math exponents

Mathematics
2 answers:
sergejj [24]3 years ago
7 0
<span>12 ^3 over 12 ^ 7
1728 / </span>35831808 = <span>0.0000482253</span>
Karo-lina-s [1.5K]3 years ago
3 0
<span>12 ^3 over 12 ^ 7 
=</span><span>12 ^3 / 12 ^ 7 
=1/12^4</span>
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Which of the following functions has a domain of x2-3?
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The Correct answer is A
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When Nachelle runs the 400 meter dash, her finishing times are normally distributed
elena-s [515]

Step-by-step explanation:

:? O ghhbbvbbbnhhggvhgffghhhhfgghtf

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3 years ago
The distribution of passenger vehicle speeds traveling on a certain freeway in California is nearly normal with a mean of 71.5 m
Zinaida [17]

Answer:

a

G  =   0.007523

b

 The  number of cars the  highway patrol officer would watch before a  car that is seen is E(X) = 1.6027

The standard deviation is   s  =  0.9829

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Step-by-step explanation:

From the question we are told that

The mean is \mu  =  71.5 \ miles/hour

The standard deviation is \sigma  =  4.75 \  miles/hour

The speed limit is x =  70 \  miles /hour

Generally the probability of getting a car that is moving with speed greater than the speed limit is mathematically represented as

p =P(X > x  )  =  P(X > 70) =  P(\frac{X - \mu }{\sigma }  >  \frac{70 - 71.5 }{4.75})

=> p=  P(X > 70) =  P(\frac{X - \mu }{\sigma }  >  \frac{70 - 71.5 }{4.75})

=> p= P(X > 70) =  P(\frac{X - \mu }{\sigma }  >  -0.31579 )

Here

\frac{X - \mu }{\sigma }  =  Z(The \ standardized \  value  \ of  X )

So

=> p=  P(X > 70) =  P(Z >  -0.31579 )

From the z-table

p = P(Z >  -0.31579 ) =   0.62392

So

p =  P(X > 70) =  0.62392

Generally the probability of getting a car that is not moving with speed greater than the speed limit is mathematically represented as

q =  1 - p

=> q =  1 -  0.62392

=> q =  0.37608

Generally the probability of getting 5 cars that are not speeding is mathematically represented as

G  =  q^5

=> G  =  (0.37608)^5

=> G  =   0.007523

Generally the number of cars that the highway patrol officer is expected to watch until the first car that is speeding is gotten is mathematically represented as

E(X) =  \frac{1}{p}

=> E(X) =  \frac{1}{0.62392}

=> E(X) = 1.6027

Generally the standard deviation is mathematically represented as

s  =  \sqrt{\frac{1 - p }{ p^2} }

=>     s  =  \sqrt{\frac{1 -0.62392 }{ (0.62392)^2} }

=> s  =  0.9829

8 0
3 years ago
Please help with geometry question
Hunter-Best [27]

Answer:

m∠J = 45° , m∠I = 45° and m∠M = 90°

And the ΔJIM is an isosceles right angled triangle.

Step-by-step explanation:

(a). In ΔJIM,

∠J = 2x + 15,

∠I = 5x - 30, and

∠M = 6x

Now, using angle sum property of a triangle that sum of all the angles in a triangle is 180°

⇒ ∠J + ∠I + ∠M = 180°

⇒ 2x + 15 + 5x - 30 + 6x = 180°

⇒ 13x -15 = 180°

⇒ 13x = 195

⇒ x = 15

Therefore, m∠J = 45° , ∠I = 45° and m ∠M = 90°

(b). Now, ΔJIM is a right angled triangle right angled at M.

Also, ∠J = ∠I = 45°

So, JM = IM ( because in a triangle sides opposite to equal angles are equal)

So, ΔJIM is an isosceles triangle because its two sides are equal.

Hence, ΔJIM is a right angled isosceles triangle right angled at M.

8 0
3 years ago
Can I have some help please
horrorfan [7]

Answer:

I think it's trapezium .

6 0
3 years ago
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