2 years ago

Please help me with #1

Mathematics

1 answer:

Natali5045456 [20]2 years ago

3 0

Answer:

N-K = 6-3 which equals 3.

Step-by-step explanation:

You might be interested in

Someone helpppppppppppppp..... Worth 20 pointsssssss it's the last question and I've been confused for the past 2 hours Write yo

Vera_Pavlovna [14]

This is so easy dud. help is on the way

4 0

3 years ago

Read 2 more answers

Four more than twice Kai’s age does not equal Kara’s age. If Kara is 15 years old, find Kai’s age. Let k = Kai's age.

Cloud [144]

Just -4 to 15 and the divide

7 0

3 years ago

Read 2 more answers

Customers arrive at a grocery store at an average of 2.1 per minute. Assume that the number of arrivals in a minute follows the

Black_prince [1.1K]

Answer:

a) P(2)=0.270

b) P(X>3)=0.605

c) P=0.410

Step-by-step explanation:

We know that customers arrive at a grocery store at an average of 2.1 per minute. We use the Poisson distribution:

$\boxed{P(k)=\frac{\lambda^k \cdot e^{-\lambda}}{k!}}$

a) In this case: $\lambda=2.1$

$P(2)=\frac{2.1^2 \cdot e^{-2.1}}{2}\\\\P(2)=0.270$

Therefore, the probability is P(2)=0.270.

b) In this case: $\lambda=2\cdot 2.1=4.2$

$P(X>3)=1-P(X\leq 3)\\\\P(X>3)=1-\sum_{x=0}^3 \frac{4.2^x \cdot e^{-4.2}}{x!}\\\\P(X>3)=1-0.395\\\\P(X>3)=0.605$

Therefore, the probability is P(X>3)=0.605.

c) We know that two customers came in in the first minute. That is why we calculate the probability of at least 5 customers entering the other 2 minutes.

In this case: $\lambda=2\cdot 2.1=4.2$

$P(X\geq 5)=1-P(X$

Therefore, the probability is P=0.410.

4 0

3 years ago

Answers: <br> a) 74<br> b) 108<br> c)49<br> d)51

lisabon 2012 [21]

Answer:

Step-by-step explanation:

sum of exterior angles = 360

64 + 60 + 69 + 42 + x + x +23 = 360

2x + 258 = 360

2x = 360 - 258

2x = 102

x = 51

5 0

3 years ago

Read 2 more answers

Add 7 and y, then add z to the result

Illusion [34]

(7+y)+z

Step-by-step explanation:

this is to separate the sum of 7 and y from z

6 0

3 years ago