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3 years ago

Help me ???? plzzzzzzzzzzz

Mathematics

1 answer:

Yuri [45]3 years ago

3 0

Your answer will be this 2)4.10
5)30.00

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5 ( x + 7 ) +2 ( y - 1 ) when x=7 and y=2

noname [10]

Answer:

Step-by-step explanation:

5(x+7) + 2(y-1)

here x=7 and y=2

so 5(7+7)+2(2-1)= 5*14+ 2*1

70+2=72

7 0

4 years ago

Read 2 more answers

The coordinates of the point that is a reflection of Y(-4,-2) across the x-axis are what. The coordinates of the point that is r

Andreas93 [3]

Answer:

Step-by-step explanation:

across x axis:(-4,2)

across y-axis:(4,-2)

6 0

3 years ago

Solve the equation.<br><br> 5=w2.2

Sedaia [141]

Answer:

The answer is about 2.27

Step-by-step explanation:

Hope this help <3

Let me know if you need an explanation

5 0

3 years ago

The distance from the library to the park is your point 7 km how many meters is this

sattari [20]

Answer:

7000 meters

Step-by-step explanation:

We know that 1 km = 1000 meters

7 km * 1000m/km = 7000 meters

5 0

3 years ago

The time between arrivals of taxis at a busy intersection is exponentially distributed with a mean of 10 minutes. (a) What is th

Sindrei [870]

Answer:

a) 0.0025

b) 0.9975

c) 23.03 minutes

d) 23.03 minutes

Step-by-step explanation:

Let X be the random variable that measures the time waited for a taxi.

If X is exponentially distributed with a mean of 10 minutes,then the probability that you have to wait more than t minutes is

$\large P(X>t) = e^{-t/10}$

1 hour = 60 minutes, so the probability that you wait longer than one hour is

$\large P(X>60)=e^{-6}=0.0025$

Due to the “memorylessness” of the exponential distribution, the probability that you have to wait 10 or less minutes after you have already waited for one hour, is the same as the probability that you have to wait 10 or less minutes

$\large P(X\leq 10)=1-e^{-6}=0.9975$

We want x so that

P(X>x)=0.1

$\large e^{-x/10}=0.1\rightarrow -x/10=ln(0.1)\rightarrow x=-10ln(0.1)=23.03\;minutes$

We want P(X<x)=0.9

$\large 1-e^{-x/10}=0.9\rightarrow e^{-x/10}=0.1\rightarrow x=-10ln(0.1)=23.03\;minutes$

4 0

3 years ago