HELP ME ANSWER THIS PLEASEEE!!

Answer:

The system of linear equations that can be used to determine the time that each of the trains has been traveling is:

E + W = 4 ....... Equation 1

95 E + 110W = 400  ......Equation 2

Hence,

An Eastbound train has been travelling for =  (E) = 2.67 hours

A Westbound train has been travelling for =  (W) = 1.33 hours

Step-by-step explanation:

An Eastbound train (E) traveling 95 mph and a Westbound train (W) traveling 110 mph leave the same train station at different times. After 4 hours, they are 4 00 miles apart. Which system of linear equations can be used to determine the time that each of the trains has been traveling?

Speed = Distance/Time

Distance = Speed × Time

Let the time

An Eastbound train =  (E)

A Westbound train =  (W)

E + W = 4 hours ....... Equation 1

95mph × E + 110mph × W = 400 miles

95 E + 110W = 400 miles ......Equation 2

The system of linear equations that can be used to determine the time that each of the trains has been traveling is:

E + W = 4 ....... Equation 1

95 E + 110W = 400  ......Equation 2

E = 4 - W

We substitute 4 - W for E in Equation 2

95 (4 - W) + 110W = 400  

380 - 95W + 110W = 400

Collect like terms

95W - 110W = 400 - 380

15W = 20

W = 20/15

W = 1.3333333333 hours

≈ 1.33 hours

E = 4 - W

E = 4 - 1.33 hours

E = 2.67 hours

Therefore,

An Eastbound train has been travelling for =  (E) = 2.67 hours

A Westbound train has been travelling for =  (W) = 1.33 hours

Answer:

41.5?

Step-by-step explanation:

is that it to the question or is there more?!?!

Answer:

0.42

Step-by-step explanation:

60-18= 42

42/100=0.42

(Hope this helped! :D)

Answer:

7,200,000

Step-by-step explanation:

Answer:

B, B, A, A, B, B

Step-by-step explanation:

i think this is the correct answer! lmk if its good! :)

Answer:

For 100 draws, I would expect green or black to be drawn 35 times.

Step-by-step explanation:

5 + 6 + 3 + 4 + 2 = 20 marbles

I would expect green or black to be drawn 7/20 of the time.

addition process of removing the one marble and adding 100 to the amount of green and black marble

Answer:

3 and i use flvs too, also that pfp is fire

Step-by-step explanation:

Answer:

the answer is 3

Answer:

10 cats

Step-by-step explanation:

If there are 10 cats, they all will catch 6 mice each, which means 60 mice in total. If they catch 6 mice in 6 seconds, that means they will catch 60 mice in 60 seconds. You need 10 cats to get this task done

Answer:

72 is the answer

21-4 IS 17, AND 17 - 9 IS 8, THEN 9X8 IS 72.

Answer:

17,  51,  24.

Step-by-step explanation:

i cant type it rn but i will put it in comments later :D hope this helped!

Answer:

Its A and C

Step-by-step explanation:

√73= 8.54

Its on the left side of 9 and on the right side of 7.

Answer:

1. n = 4

2. n = -29

3. n = -28

4. n = -48

5. n = -22

6. n = 97

7. n = 220

8. n = -18

9. n = 36

Step-by-step explanation:

1. -n = -4

Multiply both by -1 to get n = 4

2. 12 + n = -17

Subtract 12 from both sides of the equation to get n = -29

3. -n/14 = 2

Multiply by 14 on both sides of the equation to get -n = 28

Multiply -1 on both sides of the equation to get n = -28

4. -42 = n + 6

Subtract 6 from both sides of the equation to get -48 = n or n = -48

5. -4n = 88

Divide -4 on both sides of the equation to get n = -22

6. n + -3 = 94

Add 3 to both sides of the equation to get n = 97

7. 11 = -n/-20

Multiply by -20 on both sides of the equation to get -220 = -n or -n = -220

Multiply -1 on both sides of the equation to get n = 220

8. -108 = 6n

Divide by 6 on both sides of the equation to get -18 = n or n = -28

9. 67 = 31 + n

Subtract 31 from both sides of the equation to get 36 = n or n = 36

I Hope That This Helps! :)

Answer:

because is the probability is 0.17 and 0.34 is fair

You can use the multiplication rule of probability.

The probability of event B happening if event A has already happened is 0.5

[tex]P( A \: \rm and \: B) = P(A)P(B|A) = P(B)P(A|B)[/tex]

Since we've to find the probability of B given that A has already happened, we need [tex]P(B|A)[/tex]

Since the probability of both event A and event B happening simultaneously is 0.17, thus:
[tex]P(A \: \rm and \: B) = 0.17\\ [/tex]

Since the probability of only event A happening is 0.34, thus:

[tex]P(A) = 0.34[/tex]

Thus, from the multiplication rule, we have:
[tex]P(A \: \rm and \: B) = P(A)P(B|A)\\ 0.17 = 0.34 \times P(B|A)\\\\ \dfrac{0.17}{0.34} = P(B|A)\\\\ P(B|A) = \dfrac{1}{2} = 0.5[/tex]

Thus, we have the probability of event B happening when A has already happened as 0.5

Learn more about multiplication rule of probability here:

https://brainly.com/question/14450597

Answer:

C

Step-by-step explanation:

Answer:

The quotient becomes smaller than the dividend.

Step-by-step explanation:

Answer:

100

Step-by-step explanation:

They are the same.

Hope I helped!

Answer:

100°

Step-by-step explanation:

ACD=ECB=100°

[Vertical opposite angles are equal]

Answer: 1.1%

Step-by-step explanation:

$9.72 - $9.61 = .11

.11/9.60 = 0.01145833 x 100 = 1.1458333 round to the nearest tenth = 1.1%

Answer: The rental cost for each movie is $3.25 and each video game is $5.25.

Step-by-step explanation:

Let x = rental cost for each movie

y = rental cost for each video game.

As per given , we have

6x+2y= 30    (i)

3x+5y = 36     (ii)

Multiply 2 on both sides of (ii)

6x+10y=72   (iii)

Eliminate (i) from (iii)

8y=42

⇒ y= 5.25

Put y=5.25 in (ii)

3x+5(5.25)=36

⇒  3x+26.25 =36

⇒  3x = 36-26.25

⇒  3x =9.75

⇒  x = 3.25   [Divide both sides by 3]

Hence, the rental cost for each movie is $3.25 and each video game is $5.25.

Answer:

2.25 movie

5.25 video game

Step-by-step explanation:

:)

Answer:

Using mid point theorem, A line segment joining the mid points of the two sides of the triangle, is equal to half the length of the third side.

D and E are the mid points. Hence,

DE=

2

1

AC

DE=

2

1

(6.4)

DE=3.2cm

Answer:

AD=BE

Step-by-step explanation:

Because AB and BC are equal, their lengths are also equal and also it is an Isosceles triangle. Therefore the midpoint of AB or the half of AB which is either AD or DE are equal. Vice versa for BC. So AD=BE

Answer:

182.353745455

Answer:180

Step-by-step explanation:

Answer:

the answer is B.300.Don't forget to mark brainliest

Answer:

a

Step-by-step explanation:

Answer:

60 miles per hour

Step-by-step explanation:

Divide 120 miles by 2 hours and you get 60 miles per hour.

Answer:

60 mph

Step-by-step explanation:

120/2=60

If the car drives 120 miles in 2 hours, divide 120 by 2 to get the unit rate

Answer:

-0.656168ft

Step-by-step explanation:

If Spring force constant (k)  is 125  N/m

And the force is (F) 25 N ,

then the spring displacement (Δx) -0.656168

Equation used:

Knowing Hooke's law, we can write it down it the form of a formula:

F = -kΔx

F is the spring force (in N);

k is the spring constant (in N/m); and

Δx is the displacement (positive for elongation and negative for compression, in m).

We found the answer of 4.5. I had her add another 1.5 which gave us the number 6 in the chart to show proof to her.

Step-by-step explanation:

Answer:

63

Step-by-step explanation:

=7(1-(-8))

=7(9)

=63

hope this helps

Answer: 63

Step-by-step explanation:

7(1- -8)

7(1+8)

7(9)

63