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MakcuM [25]
3 years ago
7

The average hourly wage of workers at a fast food restaurant is $6.75 with a standard deviation of $0.25. If the distribution is

normal, what is the probability that a worker selected at random earns more than $7.00 an hour?
Mathematics
1 answer:
Sholpan [36]3 years ago
3 0

Answer:

25% would be the answer

Step-by-step explanation:

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The general solution to the second-order differential equation y′′+10y=0 is in the form y(x)=c1cosβx+c2sinβx. Find the value of
allsm [11]

Answer:β=√10 or 3.16 (rounded to 2 decimal places)

Step-by-step explanation:

To find the value of β :

  • we will differentiate the y(x) equation twice to get a second order differential equation.
  • We compare our second order differential equation with the Second order differential equation specified in the problem to get the value of β

y(x)=c1cosβx+c2sinβx

we use the derivative of a sum rule to differentiate since we have an addition sign in our equation.

Also when differentiating Cosβx and Sinβx we should note that this involves function of a function. so we will differentiate  βx in each case and multiply with the differential of c1cosx and c2sinx respectively.

lastly the differential of sinx= cosx and for cosx = -sinx.

Knowing all these we can proceed to solving the problem.

y=c1cosβx+c2sinβx

y'= β×c1×-sinβx+β×c2×cosβx  

y'=-c1βsinβx+c2βcosβx

y''=β×-c1β×cosβx + (β×c2β×-sinβx)

y''= -c1β²cosβx -c2β²sinβx

factorize -β²

y''= -β²(c1cosβx +c2sinβx)

y(x)=c1cosβx+c2sinβx

therefore y'' = -β²y

y''+β²y=0

now we compare this with the second order D.E provided in the question

y''+10y=0

this means that β²y=10y

β²=10

B=√10  or 3.16(2 d.p)

5 0
3 years ago
1.
Komok [63]

Answer:

Future amount (A) = $1,258.77 (Approx)

Step-by-step explanation:

Given:

Amount deposit (p) = $693

Rate of interest monthly (r) = 4.9% / 12 = 0.003833

Number of month (n) = 13 × 12 = 156

Find:

Future amount (A)

Computation:

A = p [1+r]^n \\\\ A = 693 [1+0.003833]^{156}\\\\ A= 693[1.8163]\\\\ A = 1258.77

Future amount (A) = $1,258.77 (Approx)

6 0
3 years ago
Find the shaded area
My name is Ann [436]

Answer:

113.1in²

Step-by-step explanation:

The answer for this question will be 113.1in²

As we know the diameter that is 12 inches.

Thats how we got the area for this question.

Hope this helps

6 0
3 years ago
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a fair coin is tossed three times in succession.the sample space is shown,where H represents avhaed and T represents a tail. Fin
hodyreva [135]
Because the probability of getting heads is 1/2, in a scenario in which it is tossed 3 times, the probability of getting exactly one head is 1/3.
5 0
3 years ago
Kobe's overtime pay is $5 an hour more than his regular pay. He worked 8 hours at his regular wage and 3 hours at his overtime w
Fofino [41]

Answer: $9

Step-by-step explanation: 9•8=72

9+5=14

14•3=42

42+72=114

5 0
3 years ago
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