HELPPPPP What is the combine legth of all the buttons longer than 1 inch
1 answer:
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Answer
Find out the how long will it take Jennifer to catch Jeff.
To prove
Formula
let us assume that the distance be denoted by d .
let us assume that the time be denoted by t .
As given
Jeff is traveling from his home in Salem at a constant rate of 50 mph.
He has already traveled 20 miles .
As put the values in the formula
50t - 20 = d
(As jeff already travelled 20 miles distance.)
As given
His sister Jennifer is making the same trip but at a constant rate of 60 mph and has only traveled 5 miles.
than put the value in the formula
than the equation becomes
60t -5 = d
Than the two equation becomes
50t - 20 = d and 60t -5 = d
compare both the equation
50t - 20 = 60t -5
50t - 60t = 20 -5
- 10t = 15
t = -1.5
(As time cannot be negative.)
t = 1.5 hours
1.5 hours will it take Jennifer to catch Jeff.
Option (A) is correct .
Answer:
Step-by-step explanation:
Let x represent the random variable representing the scores in the exam. Given that the scores are normally distributed with a mean of 40 and a standard deviation of 5, the diagram representing the curve and the position of the mean, the mean plus or minus one standard deviation, the mean plus or minus two standard deviations, and the mean plus or minus three standard deviations is shown in the attached photo
1 standard deviation = 5
2 standard deviations = 2 × 5 = 10
3 standard deviations = 3 × 5 = 15
1 standard deviation from the mean lies between (40 - 5) and (40 + 5)
2 standard deviations from the mean lies between (40 - 10) and (40 + 10)
3 standard deviations from the mean lies between (40 - 15) and (40 + 15)
b) We would apply the probability for normal distribution which is expressed as
z = (x - µ)/σ
Where
x = sample mean
µ = population mean
σ = standard deviation
From the information given,
µ = 40
σ = 5
the probability that a randomly selected score will be greater than 50 is expressed as
P(x > 50) = 1 - P( ≤ x 50)
For x = 50,
z = (50 - 40)/5 = 2
Looking at the normal distribution table, the probability corresponding to the z score is 0.98
P(x > 50) = 1 - 0.98 = 0.02
Answer:
The value of x is 3
Step-by-step explanation:
Given that the length of FH is 18 units
we have to find the value of x.
Point G lies between F and H in which measurements are
Divide by 6 throughout the equation.
The value of x is 3 cm.
Option 1 is correct.
Answer:
The probability that 10 adults selected at random from the town all have health insurance is 0.01153.
Step-by-step explanation:
Consider the provided information.
One town, 64% of adults have health insurance.
Let p = 64% = 0.64
Therefore, q=1-0.64=0.36
We need to find the probability that 10 adults selected at random from the town all have health insurance
Use the formula:
Here, the value of r is 10.
Substitute the respective values in the above formula.
Hence, the probability that 10 adults selected at random from the town all have health insurance is 0.01153.