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3 years ago

Can someone please answer this question please answer it correctly and please show work please answer it correctly

Mathematics

1 answer:

liberstina [14]3 years ago

7 0

Answer:

I have attached a photo containing my work and answers. If you have any questions, please let me know!

~Hope this helps!~

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A man who moves to a new city sees that there are two routes he could take to work. A neighbor who has lived there a long time t

Mandarinka [93]

Answer:

(a) Confidence Interval for Route A is (38.61, 41.39)min

Confidence Interval for Route B is (42.07, 43.93)min

(b) No

Step-by-step explanation:

(a) Route A

Mean=40min, sd=3min, df=33.1, t=2.0675, n=20

CI = (mean + or - t×sd/√n)

CI = (40 + 2.0675×3/√20) = 40+1.39 = 41.39min

CI = (40 - 2.0675×3/√20) = 40 - 1.39 = 38.61min

CI for Route A is (38.61,41.39)min

Route B

Mean=43min, sd=2min, t=2.0675, n=20

CI = (43 + 2.0675×2/√20) = 43+ 0.93 = 43.93min

CI = (43 - 2.0675×2/√20) = 43 - 0.93 = 42.07min

CI for Route B is (42.07,43.93)min

(b) He should not believe the old timer's claim. The man saves an average of 3 minutes a day by driving Route A

3 0

3 years ago

Read 2 more answers

I WILL GIVE BRAINLIEST PLEASE ANSWER NO TROLLS!!! What is the length of diagonal LN in parallelogram LMNO?

love history [14]

Answer:

x=4

y=12

therefore, the length of LN is 24.

6 0

3 years ago

Read 2 more answers

The coordinates of points M,N, and P are ....

Rainbow [258]

Answer:

(-1, -1) Let me know if the explanation didn't make sense.

Step-by-step explanation:

If we graph the three points we can see what looks like a quadrilateral's upper right portion, so we need a point in the lower left. This means M is only connected to N here and P is only connected to N. So we want to find the slope of these two lines.

MN is easy since their y values are the same, the slope is 0.

NP we just use the slope formula so (y2-y1)/(x2-x1) = (-1-3)/(5-4) = -4.

So now we want a line from point M with a slope of -4 to intersect with a line from point P with a slope of 0. To find these lines weuse point slope form for those two points. The formula for point slope form is y - y1 = m(x-x1)

y-3 = -4(x+2) -> y = -4x-5

y+1 = 0(x-5) -> y = -1

So now we want these two to intersect. We just set them equal to each other.

-1 = -4x -5 -> -1 = x

So this gives us our x value. Now we can plug that into either function to find the y value. This is super easy of we use y = -1 because all y values in this are -1, so the point Q is (-1, -1)

8 0

3 years ago

Can someone help me find the missing height?

KiRa [710]

<h2>Solution :</h2>

Area = 30 units²

Base = 5 units

Height = ? = Let it be -> x

Area (formula) = base×height = x×5 units= 30 units²

= x= 30/5 = 6 units

<h2>Thus , the height = 6 units</h2>

3 0

3 years ago

simplify the rational expression. state any restrictions on the variable. ((n^(4)-11n^(2)+30))/(n^(2)-7n^(2)+10)

sergeinik [125]

Hi, (n2 -6 ) (n2 - 5) - 2 (3n2 - 5)

4 0

3 years ago