The sum of 31/4+42/4= 18.25
<u>Step-by-step explanation</u>:
- The denominators are same.
- Then add the numerators and keep the denominators same.
The sum of (31/4) + (42/4) = (31+42)/4
⇒ 73/4
⇒ 18.25
Answer:
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Step-by-step explanation:
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Answer:
a
mean variance
b
The binomial random variable x fall into this interval ranges from
- 5 to 5
c
Step-by-step explanation:
From the question we are told that
The sample size is
The percentage that look for gas stations and food outlets that are close to or visible from the highway is
Generally the mean is mathematically represented as
=>
=>
The variance is mathematically represented as
=>
=>
The standard deviation is mathematically evaluated as
The interval is evaluated as
=>
=>
=>
The binomial random variable x fall into this interval ranges from
- 5 to 5
Generally
From the z-table
And
=>
=>
The teacher spend some amount on buying costumes and microphones for 6 cast members.
<u>GiveN</u><u>:</u>
- Cost of each costume = $38
- Cost of each microphone = $c
- Total money spent = $354
Let's frame the equation. Total money is the total amount spent for 6 cast members.
Money spent on costumes = $38 × 6
Money spent on microphone = $c × 6
<u>Equation:</u>
Taking 6 as common,
Dividing 6 from both sides,
Solving further,
So, the cost of each microphone = <u>$21</u>
The teacher spent this much on each microphone.
#CarryOnLearning
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It will take 10 weeks to have the same amount of money. 60+8*10=140 and 90+5*10=140.