MATHEMATICS COLLEGE

Find the value of n n+150+7+100=200+50+27

Answers

Answer 1
Answer:

Answer:

Step-by-step explanation:

n+150+7+100=200+50+27

n+257 = 277

n = 277 - 257

n = 20
Answer 2
Answer:

Answer:

20

Step-by-step explanation:

hope it will help goodbye.if there is any other question feel free to ask

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A sample mean, sample size, and population standard deviation are given. Use the one-mean z-test to perform the required hypothesis test at the given significance level. Use the critical -value approach.= 20.5, n = 11 , σ = 7, H0: μ = 18.7; Ha: μ ≠ 18.7, α = 0.01

Answers

Answer:

 Z = 0.8528 < 2.576

The calculated value Z = 0.8528 < 2.576 at 0.01 level of significance

Null hypothesis is Accepted at 0.01 level of significance.

There is no significance difference between the means

Step-by-step explanation:

Given data

size of the sample 'n' = 11

mean of the sample x⁻ =20.5

Mean of the Population μ = 18.7

Standard deviation of Population σ = 7

Test statistic

                  Z = (x^(-) -mean)/((S.D)/(√(n) ) )

                  Z = (20.5 -18.7)/((7)/(√(11) ) )

                  Z = (1.8)/(2.1105)

                  Z = 0.8528

critical Value

Z_{(\alpha )/(2) } = Z_{(0.01)/(2) } = Z_(0.005) = 2.576

The calculated value Z = 0.8528 < 2.576 at 0.01 level of significance

Null hypothesis is Accepted at 0.01 level of significance.

There is no significance difference between the means

Answer:Answer:

B. 18.7 ± 9.7

Step-by-step explanation:

Gary got on the Ferris wheel at the amusement park at 2:40 P.M. It went around many times and finally let him off at 3:16 P.M. How long was Gary on the ride?

Answers

Final answer:

Gary was on the Ferris wheel for a total of 36 minutes, calculated by subtracting the time he got on (2:40 P.M.) from the time he got off (3:16 P.M.).

Explanation:

To find out how long Gary was on the Ferris wheel, we need to calculate the difference in time from when he got on the ride to when he got off. He got on at 2:40 P.M. and got off at 3:16 P.M. To calculate the time difference, we first convert the times to a 24-hour format. So, 2:40 P.M. is 14:40 and 3:16 P.M. is 15:16.

Next, we subtract the starting time from the ending time. The calculation is as follows:

15:16 - 14:40 = 0:36

So, Gary was on the Ferris wheel for 36 minutes.

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Answer:

2:40 to 3:16

2:40 to 3 is 20 min

3 to 3:16 is 16 min

20+16=36

So, Gary was on the ride for 36 minutes!

After writing a $800 check to pay a bill, a student had a balance of $350 in his account. How muchdid he have in the account before he wrote the check?
a) Let X = his balance before writing the check. Write the equation you would use to solve this
problem.

Answers

The equation to solve the problem is X  - $800 = $350. And the amount in his account before he wrote the check is $1150.

What is an equation?

An equation is formed when two equal expressions are equated together with the help of an equal sign '='.

Given that after writing an $800 check to pay a bill, a student had a balance of $350in his account.

We need to find out how much did he have in the account before he wrote the check.

The amount of the check = $800

The amount the student has in balance = $350

The amount the student had before he wrote the check.

Let X be the amount the student had before the check.

Now,

X  - $800 = $350

X - 800 = 350 is our equation to find the amount the student has before the check.

The value of X can be written as,

We have,

X  - $800 = $350

Add $800 on both sides

X = $350 + $800

X = $1150

Hence, the equation to solve the problem is X  - $800 = $350. And the amount in his account before he wrote the check is $1150

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Answer:

x=800+350

Step-by-step explanation:

The money spent plus the money he has left would equal the money he had in the first place.

Can someone please help me with this What is the sum of ​​​​​​12,837.45 and 15,910.65? Enter your answer in the box below.

Answers

Answer:

lol 28748.1 :)

The slope intercept form of a line isy=mx+b
The slope is represented by____
The y-intercept is represented by____

Answers

Answer:y=Mx+b

Step-by-step explanation:

Find three consecutive integers whose sum is 216. (Hint: if n represents the smallest of the three integers, n + 1 and n + 2 representthe other two numbers.)

Answers

Answer:

71, 72, 73

Step-by-step explanation:

So we want to find three consecutive integers that equal 216.

Let the first integer be n.

Then the second integer is n+1, and the third integer is n+2.

Thus:

n+(n+1)+(n+2)=216

Combine like terms:

3n+3=216

Subtract 3 from both sides:

3n=213\n

Divide 3 from both sides:

n=71

So, the first term is 71.

And the other two is 72 and 73.

And we are done :)
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