All categories

3 years ago

Let P(A) = 0.27, P(B) = 0.58, P(A and B) = 0.21

Mathematics

1 answer:

Helga [31]3 years ago

4 0

<h3>Answer: 0.64</h3>

Work Shown:

P(A or B) = P(A) + P(B) - P(A and B)

P(A or B) = 0.27 + 0.58 - 0.21

P(A or B) = 0.64

You might be interested in

Solve for y 6x-8y>=-24

Amiraneli [1.4K]

$6x-8y\geq-24\qquad\text{subtract 6x from both sides}\\\\-8y\geq-6x-24\qquad\text{change the signs}\\\\8y\geq6x+24\qquad\text{divide both sides by 8}\\\\y\geq\dfrac{6}{8}x+3\\\\\boxed{y\geq\dfrac{3}{4}x+3}$

3 0

3 years ago

Drea and Sajini both worked at a local ice cream shop over the summer. Together, they earned a total of $425. Drea earned $25 mo

Oksi-84 [34.3K]

Answer:

Sajini = 200

Drea = 225

Step-by-step explanation:

d = amount Drea earned

s = amount Sajini earned

Together they earned 425

d+s =425

d = s+25

The system of equations

d+s =425

d = s+25

I will use substitution to solve

Substitute d= s+25 into the first equation

d+s =425

(s+25) + s = 425

Combine like terms

2s+25 =425

Subtract 25 from each side

2s+25-25 =425-25

2s = 400

Divide by 2

2s/2 =400/2

s =200

Sajini = 200

Now we need to find d

d = s+25

d = 200 + 25

d = 225

Drea = 225

7 0

3 years ago

Read 2 more answers

Add the following<br> -5+(-7)+9+(-3)<br> - 5+(-7)+9+(-3)=(Simplify your answer.)

IceJOKER [234]

Answer:

-5+(-7)+9+(-3) = -6

Step-by-step explanation:

We need to add the following i.e.

-5+(-7)+9+(-3)

We know that, +(-) = - (minus)

So,

-5-7+9-3 = -12+6

= -6

So, the value of the given expression is equal to -6.

7 0

3 years ago

In a game, 20 small squares of paper are numbered 1 through 20. If Egan randomly selects 1 piece of paper, what is the probabili

garri49 [273]

Answer:

1/4

Step-by-step explanation:

Probability is essentially (# times a specific event occurs) / (# times any general event occurs).

Here, the "specific event" is selecting a multiple of four. The multiples of 4 from 1 to 20 are: 4, 8, 12, 16, and 20 - there are 5 of these. So, the number of times the specific event can occur is 5.

The "general event" is selecting any number out of the 20. Since there are 20 numbers, then there are 20 ways that a general event occurs.

So, the probability is 5/20 = 1/4.

3 0

4 years ago

Read 2 more answers

you budget $20 for a pizza. A cheese pizza cost $12.95 and each additional topping cost $1.50. How many toppings can you order?

UNO [17]

Answer:

you can order 6 toppings.

Step-by-step explanation:

20-12.95= 7.05

1.50*4= 6.00

leaving 1.05 left as a Remainder.

3 0

3 years ago