All categories

4 years ago

The expression (x+3)(x+5) is equivalent to?

Mathematics

1 answer:

LiRa [457]4 years ago

8 0

Answer:

B. x^2 + 8x + 15

Step-by-step explanation:

Use FOIL

First

Outside

Inside

Last

F: x * x = x^2

O: x * 5 = 5x

I: 3 * x = 3x

L: 3 * 5 = 15

Combine like terms

5x + 3x = 8x

x^2 + 8x +15

B. x^2 + 8x + 15

You might be interested in

You get GPS units from two manufacturers, A and B. You get 43% of your units from A and 57% of your units from B. In the past, 2

defon

Answer:

0.5015 = 50.15% probability that it came from manufacturer A.

Step-by-step explanation:

Conditional Probability

We use the conditional probability formula to solve this question. It is

$P(B|A) = \frac{P(A \cap B)}{P(A)}$

In which

P(B|A) is the probability of event B happening, given that A happened.

$P(A \cap B)$ is the probability of both A and B happening.

P(A) is the probability of A happening.

In this question:

Event A: Defective

Event B: From manufacturer A.

Probability a unit is defective:

2% of 43%(from manufacturer A)

1.5% of 57%(from manufacturer B). So

$P(A) = 0.02*0.43 + 0.015*0.57 = 0.01715$

Probability a unit is defective and from manufacturer A:

2% of 43%. So

$P(A \cap B) = 0.02*0.43 = 0.0086$

What is the probability that it came from manufacturer A?

$P(B|A) = \frac{P(A \cap B)}{P(A)} = \frac{0.0086}{0.01715} = 0.5015$

0.5015 = 50.15% probability that it came from manufacturer A.

4 0

3 years ago

if I had a triangle and one side was 45 degrees and the other side was 2k and the other side was k then what is the value of k?

DanielleElmas [232]

K = 45 180=45+2(45)+45

6 0

3 years ago

Pls help this is due in 20 min pls help.

Georgia [21]

Answer:

32 2/5

Step-by-step explanation:

Twice of the width is 10 4/5

So 10 4/5 plus 5 2/5 is 16 1/5

Then you add it to 16 1/5 because it is the perimeter and it has the same sides

5 0

3 years ago

Read 2 more answers

I dont even kno wat the BC is

Natasha2012 [34]

Answer:

Step-by-step explanation:

The side BC is opposite an angle

The angle that is opposite BC is Angle A

4 0

3 years ago

How many months are in 59 days???

noname [10]

1 month 29 days but if the month have 29 days each then the it will be 2 months

7 0

3 years ago