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LenKa [72]
2 years ago
7

Which counterexample shows that the conjecture "Every parallelogram is also a rectangle" is false?

Mathematics
2 answers:
saveliy_v [14]2 years ago
5 0
A parallelogram without four right angles would prove that to be false.
kkurt [141]2 years ago
4 0
Yep that'd be false since they are also rectangles
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If two students from this college are selected at random, what is the probability that they are both males?
igor_vitrenko [27]

Answer:

P(A_1 and A_2) = P(A_1) *P(A_2)= 0.3*0.3 =0.09

Step-by-step explanation:

Assuming this problem :"Only 30% of the students in a certain liberal arts college are males. If two students from this college are selected at random, what is the probability that they are both males?"

Previous concepts

An independent event is an "event that has no connection to another event's chances of happening ". For this case we can assume that if one person is male and if we select another one the probability that this one would be male or female is totally indepedent from the first selection.

When we have two independent events let's say A and B and we want to find the probability that both events occurs at the same time we can use the following formula:

P(A and B) = P(A)*P(B)

Solution to the problem

We can define some notation:

A_1 first person selected is a male

A_2 second person selected is male

On this case we want the probability that both would be males. And we can express this like this on math terms:

P(A_1 and A_2)

For this case we can assume that the two events are independent. And in order to find the probability for two events independents events we just need to multiply the probabilities of each one like this:

P(A_1 and A_2) = P(A_1) *P(A_2)= 0.3*0.3 =0.09

5 0
3 years ago
Will GIVE BRAINLIEST IF LEGIT If
babymother [125]

Step-by-step explanation:

h(x) = (f-g) (x) = 3x²+4x-10- 7x²+x-4

= -4x²+5x-14 (option D)

3 0
2 years ago
Solve the following linear programming problem by applying the simplex method to the dual problem.
Law Incorporation [45]

Answer:

Objective Function: P = 2x + 3y + z

Subject to Constraints:

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Step-by-step explanation:

3 0
3 years ago
She has one board that is 2 m 3 cm long and another that is 2 m 98 cm long. How long are the two boards together in meters?
miss Akunina [59]

Answer:

5 meters and 1 cm

Step-by-step explanation:

well their are 100 cm in 1 meter

so add 2m and 3 cm to 2 m and 98 cm

to get 4 m and 101 cm what is 5 meters and 1 cm

4 0
3 years ago
Can someone please heeellppp?!
Nataly_w [17]

Answer:

B

Step-by-step explanation:

the question asks you to order from least to greatest by the exponents. So it would be "B" because negative 6 is less then -5 and -5 is less then 1

3 0
3 years ago
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