MATHEMATICS HIGH SCHOOL

The unit form and standard form of (2 tens 1 one) x 10?

Answers

Answer 1
Answer: 2 tens and 1 one is equal to 21.  21 times 10 is 210.

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Which of the following are true? I. Two events are disjoint if they can’t both occur at the same time.
II. Two events are independent if they have the same probability.
III. An event and its complement have probabilities that always add up to 1.

A) I only
B) II only
C) III only
D) I and II only
E) I and III only

Answers

Option E) I and III only is the correct answer

Step-by-step explanation:

First of all we have to define the disjoint events and independent events

Disjoint events:

Two events are said to be mutually exclusive or disjoint if they cannot occur at the same time. There will be no common elements in their outcomes.

Independent Events:

Two events are said to be independent if the probability of occurrence of one event doesn't affect the probability of occurrence of other event.

Moreover,

The sum of probability of an events occurrence and its complement is 1.

So by looking at the definitions we can say that statement I and statement III are true

Hence,

Option E) I and III only is the correct answer

Keywords: Probability, events

Learn more about probability at:

#LearnwithBrainly

A problem states: "There are 7 more girls than boys in a class. There are 23 students in the class in all. How many girls are there in the class?"What are the unknowns in this problem?

Answers

There are 15 more girls than boys

Kendra has a painting canvas that is 24 inches wide by 33 inches high. She painted a red rose, which covered 50% of the canvas. What was the area of the canvas which was covered by the red rose?

Answers

Area of the canvas = 24 x 33 = 792 in²

50% of 792 = 0.5 x 792 = 396 in²

Answer: 396 in² was covered by the red rose.

Fie sirul de nr 7,17,21,28........ a) Aflati termenul de pa locul 2015 b) Aflati suma primilor 2015 termeni ai sirului Ajutati-ma , va rog!!!!!!

Answers

Answer:

Aflati suma primilor 2015  sirul de

Step-by-step explanation:

Answer:

That's correct ^^^

Step-by-step explanation:

In the school cafeteria, students choose their lunch from 3 sandwiches, 3 soups, 4 salads, and 2 drinks.How many different lunches are possible for a student who chooses exactly 1 sandwich, 1 soup, 1 salad, and 1 drink?

Answers

The student can choose any one of 3 sandwiches. For each of those . . .
He can choose any one of 3 soups.  For each of those . . .
He can choose any one of 4 salads.  For each of those . . .
He can choose either one of 2 drinks.

Total possibilities = (3 x 3 x 4 x 2) = 72 different lunches.

WOULD YOU RATHER use a coupon for $20 off 10of your order OR use a coupon for 20% off of your order?Use mathematics to justify your answer.

Answers

Answer:

Well it would depend on the price

Step-by-step explanation:

if it was for $100 item , these are the same but, if its more, the 20% will be higher off the bigger the price

so I would much rather have 20% off for and item more than 100 dollars and prefer 20$ off to something under a $100
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