students in mrs.guerro class most complete at least 40 math problems for home work each week.the table shows the progess of 4 students on wensday.

Complete question is;

An ordinary deck of playing cards has 52 cards. There are four suits

-spades, hearts, diamonds, and clubs

-with 13 cards in each suit.

Spades and clubs are black; hearts and diamonds are red. One of these cards is selected at random. Let A denote the event that a red card is chosen.

Find the probability that a red card is chosen, and express your answer in probability notation.

Answer:

P(A) = 0.5

Step-by-step explanation:

We are told that the ordinary deck of playing cards has 52 cards.

Now, there are four suits

-spades, hearts, diamonds, and clubs

-with 13 cards in each suit.

Now, in a standard set of playing cards, there are 13 black spades and 13 black clubs as well as 13 red hearts and 13 red diamonds

Thus;

Number of red cards = 13 + 13

Thus;

Number of red cards = 26

Since, A denotes the event that red card is chosen.

This means that probability of choosing a red card is;

P(A) = number of red cards/total number in a deck of cards

P(A) = 26/52

P(A) = 0.5

Answer:

The conclusion is that the triangle ABC doesn't have any right angles because all angles are less than 90°

Final answer:

Given the statements that 'if a triangle has a right angle, then it's a right triangle' and that 'Triangle ABC is not a right triangle', we can conclude that 'Triangle ABC does not have a right angle'.

Explanation:

The given statements are:

1. If a triangle has a right angle, then the triangle is a right triangle.
2. Triangle ABC is not a right triangle.

From these statements, the true conclusion that can be drawn is: Triangle ABC does not have a right angle.

This conclusion is derived from the logical sequence of the given statements. In simple terms, statement 1 tells us that having a right angle defines a right triangle. Then, in statement 2, we are told that Triangle ABC is not a right triangle, which, based on statement 1, allows us to conclude that Triangle ABC does not have a right angle.

Learn more about logical conclusion here:

brainly.com/question/32035635

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Answer:

The value in millions of dollars of a downtown office building that cost 12 million dollars to build 20 years ago and depreciated at 9% per year is $1819738.95

Step-by-step explanation:

Cost of building 20 years ago = 12000000

We are given that the cost depreciated at 9% per year

Formula :

Where N(t)= Population after t years

=Initial population=12000000

r= rate of depreciation=0.09

t = 20 years

Substitute the values in the formula:

N(t)=1819738.95

Hence the value in millions of dollars of a downtown office building that cost 12 million dollars to build 20 years ago and depreciated at 9% per year is $1819738.95