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3 years ago

Which model represents the factors of 4x2 - 9?

Mathematics

2 answers:

Galina-37 [17]3 years ago

4 0

Answer:

Step-by-step explanation:

What are the choices?

4x^2-9

Both terms are perfect squares.

(2x-3)(x+3)

gulaghasi [49]3 years ago

4 0

Answer:

B=#2

Step-by-step explanation:

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A toddler is allowed to dress himself on Mondays, Wednesdays, and Fridays. For each of his shirt, pants, and shoes, he is equall

avanturin [10]

Answer:

0.0286 = 2.86% probability that today is Monday.

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: Dressed correctly

Event B: Monday

Probability of being dressed correctly:

100% = 1 out of 4/7(mom dresses).

(0.5)^3 = 0.125 out of 3/7(toddler dresses himself). So

$P(A) = 0.125\frac{3}{7} + \frac{4}{7} = \frac{0.125*3 + 4}{7} = \frac{4.375}{7} = 0.625$

Probability of being dressed correctly and being Monday:

The toddler dresses himself on Monday, so (0.5)^3 = 0.125 probability of him being dressed correctly, 1/7 probability of being Monday, so:

$P(A \cap B) = 0.125\frac{1}{7} = 0.0179$

What is the probability that today is Monday?

$P(B|A) = \frac{P(A \cap B)}{P(A)} = \frac{0.0179}{0.625} = 0.0286$

0.0286 = 2.86% probability that today is Monday.

4 0

3 years ago

How many quarter inch cubes fit into 1 inch and 3 3/4 inch?

Anton [14]

1 inch = 4 cubes 3 3/4 = 15 cubes

8 0

3 years ago

Select the correct answer.

dlinn [17]

Answer:

E. 25%

Step-by-step explanation:

3/12=0.25

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3 years ago

Read 2 more answers

32 divided by 10-8 divided by 2-3

Alja [10]

Answer:

Step-by-step explanation:

<h2>32÷10-8÷2-3</h2><h2>32÷10-4-3</h2><h2>3.2-4-3</h2><h2>3.2-7</h2><h2>-7.0-3.2</h2><h2>-3.8answer</h2>

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2 years ago

Kamaria opens a bank account with $300. Five weeks later, her account balance is $500. What was the average rate of change of he

Softa [21]

Answer:

$40 average

Step-by-step explanation:

500-300=200

200/5=40

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3 years ago