Ask question

Ask question

All categories

2 years ago

7

Two trains leave stations 324 miles apart at the same time and travel toward each other. one train travels at 95 mph while the o

ther travels at 85 mph how long will it take for the two trains to meet

1 answer:

Lapatulllka [165]2 years ago

7 0

324/(95+85)=1.8 It will take 1 hour and 48 minutes

You might be interested in

Vesna [10]

A(n)=a+(n-1)d
A(40)= -1+(40-1)-4
A(40)= -1+39(-4)
A(40)= -1+(-156)
A(40)= -157

4 0

2 years ago

In this problem we will be dealing with the probability density function (pdf) associated with a continuous random variable, X.

konstantin123 [22]

Answer:

$b)\ 0.568$

Step-by-step explanation:

Given

$f(x) = 6x(1- x);\ 0 \le x \le 1$

Required

$P(0.3 < x < 0.7)$

From the question, we have:

$P(a < x < b) = \int\limits^b_a {f(x)} \, dx$

So, we have:

$P(0.3 < x < 0.7) = \int\limits^{0.7}_{0.3} {6x(1 - x)} \, dx$

Open bracket

$P(0.3 < x < 0.7) = \int\limits^{0.7}_{0.3} {6x - 6x^2} \, dx$

Integrate

$P(0.3 < x < 0.7) = \frac{6x^2}{2} - \frac{6x^3}{3}}|\limits^{0.7}_{0.3}$

$P(0.3 < x < 0.7) = 3x^2 - 2x^3|\limits^{0.7}_{0.3}$

Substitute 0.7 and 0.3 for x

$P(0.3 < x < 0.7) = (3*0.7^2 - 2*0.7^3) - (3*0.3^2 - 2*0.3^3)$

Using a calculator, we have:

$P(0.3 < x < 0.7) = (0.784) - (0.216)$

Remove brackets

$P(0.3 < x < 0.7) = 0.784 - 0.216$

$P(0.3 < x < 0.7) = 0.568$

3 0

2 years ago

How do you write the equation for intercept (4,-3), m=-1

nata0808 [166]

Answer:

y=-1x+-3

Step-by-step explanation:

y=mx+b

y=-1x+-3

6 0

3 years ago

Please help me it’s due

zysi [14]

Answer:

1. 52

2. 50

3. 71

4. 28

5. 32

6. 67

8 0

2 years ago

-5(x-3)= -25<br> find x pls :)

Free_Kalibri [48]

Answer:

x =8

Step-by-step explanation:

-5(x-3)= -25

we apply distributive property

-5*x +5*3 =-25

-5x +15= -25

-5x = -25-15

-5x = -40

x = 40/5

x =8

4 0

3 years ago

Read 2 more answers