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Komok [63]
2 years ago
8

Two trains start from towns 256 miles apart and travel towards each other on parallel tracks. They pass each other 1.6 hours lat

er. If one train travels 10 mph faster than the other, find the speed of each train.
Mathematics
1 answer:
Alecsey [184]2 years ago
5 0
One train is going 85 mph and the other 75 mph
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Based on experience, the Ball Corporation’s aluminum can manufacturing facility in Ft. Atkinson, Wisconsin, knows that the metal
Veronika [31]

Answer:

a) 3.128

b) Yes, it is an outerlier

Step-by-step explanation:

The standardized z-score for a particular sample can be determined via the following expression:

z_i = {x_i -\bar x}/{s}

Where;

\bar x = sample means

s = sample standard deviation

Given data:

the mean shipment thickness (\bar x) = 0.2731 mm

With the standardized deviation (s) = 0.000959 mm

The standardized z-score for a certain shipment with a diameter x_i= 0.2761 mm can be determined via the following previous expression

z_i = {x_i -\bar x}/{s}

z_i = {0.2761-0.2731}/{ 0.000959}

z_i = 3.128

b)

From the standardized z-score

If [z_i < 2]; it typically implies that the data is unusual

If [z_i > 2]; it means that the data value is an outerlier

However, since our z_i > 3 (I.e it is 3.128), we conclude that it is an outerlier.

6 0
2 years ago
two angles form a linear pair. the measure of one angle is three times the measure of the other. find the measure of each angle.
Sav [38]

Answer:

measure of a angle 1 = x

measure of angle 2= 3x

3x+1x=180 ( linear pair)

4x=180

x= 180÷4

x= 45

angle one = x= 45

angle two = 3x = 3×45= 135

the 2 angles are

45 and 135

6 0
2 years ago
HELP ME <br> A. baseball field <br> B. Community garden <br> C. Movie theater <br> D. School
Hoochie [10]

Answer:

A. baseball field

Step-by-step explanation:

6 0
2 years ago
Read 2 more answers
Can some one please help with this question
Rudiy27

Answer:

5x + 9

Step-by-step explanation:

f(x) = 3x+4

g(x) = 2x + 5

(f+g)(x)

(3x+4) + (2x + 5)

= 5x + 9

// however I'm unsure

6 0
3 years ago
Using the ruler postulate, find the distance between –9 and 2.
gulaghasi [49]

Answer:

11 units

Step-by-step explanation:

According to ruler postulate, if there are two points A with coordinate a

and point B with coordinate b, \

then distance ab is given by subtracting coordinate in any order i.e it can be (a-b) or (b-a) and then take the absolute value value of it.

mathematically it can be represented as

AB = |a-b| or |b-a|

_________________________________________

in the given problem points are -9 and 2

thus distance

distance between –9 and 2  = |-9 -2| = |-11|  = 11

absolute value of -11 is 11

alternatively, distance can be calculated as

distance between –9 and 2  = |2 -(-9) | = |2 + 9 | = |-11|  = 11

7 0
3 years ago
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