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2 years ago

15

14x1/2 consider the expression

1 answer:

MissTica2 years ago

5 0

Answer: 7

Step-by-step explanation:

14*1=14

14/2=7

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On average, Tanner has noticed that 22 trains pass by his house daily (24 hours) on the nearby train tracks. What is the probabi

blondinia [14]

Answer:

0.11069

Step-by-step explanation:

We will assume that the trains pass by his house following a uniform distribution with values between 0 and 24. The probability of a train passing on a 9-hour time period is 9/24 = 3/8 = 0.375. Lets call Y the amount of trains passing by his house during that 9-hour period. Y follows a Binomail distribution with parameters 22 and 0.375.

P(Y ≤ 5) = P(Y = 0) + P(Y=1) + P(Y=2) + P(Y=3) + P(Y=4) + P(Y=5) =

${22 \choose 0} * 0.375^0*(1-0.375)^{22} + {22 \choose 1}*0.375^1*(1-0.375)^{21} +\\\\{22 \choose 2} * 0.375^2*(1-0.375)^{20} + {22 \choose 3}*0.375^3*(1-0.375)^{19} + \\{22 \choose 4} * 0.375^4*(1-0.375)^{18} + {22 \choose 5}*0.375^5*(1-0.375)^{17} = 0.11069$

I hope that works for you!

4 0

3 years ago

Use the net to find the surface area of the square pyramid.

lbvjy [14]

Answer: pay attern]dja]d

Step-by-step explanation:ad d ad ad adasd dad

3 0

2 years ago

Estimate the time Juanita will arrive at her aunt's home 320 miles away if she leaves at 9:00 a.m., drives about 60 miles per ho

uranmaximum [27]

Answer:

D. 3:00 p.m.

Step-by-step explanation:

d = Distance = 320 miles

s = Speed = $60\ \text{mph}=\dfrac{60}{3600}=\dfrac{1}{60}\ \text{miles/s}$

Time taken is given by

$t=\dfrac{d}{s}\\\Rightarrow t=\dfrac{320}{\dfrac{1}{60}}\\\Rightarrow t=19200\ \text{s}$

40 minutes break is $40\times 60=2400\ \text{s}$

Total time taken is $19200+2400=21600\ \text{s}=\dfrac{21600}{60\times 60}=6\ \text{hours}$ .

So, the entire trip took 6 hours. 6 hours after 9 a.m. is 3 p.m.

4 0

2 years ago

4. Examine the straight line depreciation graph for a car.

Lemur [1.5K]

Answer:

<h2>B. yan T.A.N.G.A</h2>

Step-by-step explanation:

<h2>Mag-Aral ka</h2>

8 0

1 year ago

The functions f and g are defined as follows.

weeeeeb [17]

Answer:

Step-by-step explanation:

Given

f(x) = 2x^2 - 3x

g(x) = -2x + 4

Now

f(-5) = 2 *(-5)^2 - 3*(-5)

= 2 * 25 + 15

= 50 + 15

= 65

Also

g(5) = - 2 * 5 +4

= -10 +4

= - 6

Hope it will help you.

7 0

2 years ago