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3 years ago

If 5 x 5=X and 5 x Y=Y but X is not equal to Y but X times Y equals Y than what is X and what is Y

Mathematics

1 answer:

lukranit [14]3 years ago

8 0

Answer:

x=0 y=1

Step-by-step explanation:

if x equals 0 then itll automatically bew diferent

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Consider randomly selecting a student at a large university, and let A be the event that the selected student has a Visa card an

poizon [28]

Answer:

We have that $B = 0.3$ .

$0.3 = b + (A \cap B)$

However, b is a probability, which means that it cannot be negative. So no, P(A ∩ B) cannot be 0.5. It can, at most, be 0.3.

Step-by-step explanation:

Event A:

Probability that a student has a Visa card.

Event B:

Probability that the student has a MasterCard.

We have that:

$A = a + (A \cap B)$

In which a is the probability that a student has a Visa card but not a MasterCard and $A \cap B$ is the probability that a student has both these cards.

By the same logic, we have that:

$B = b + (A \cap B)$

In this problem, we have that:

$A = 0.6, B = 0.3$

(a) Could it be the case that P(A ∩ B) = 0.5?

We have that $B = 0.3$ .

$0.3 = b + (A \cap B)$

However, b is a probability, which means that it cannot be negative. So no, P(A ∩ B) cannot be 0.5. It can, at most, be 0.3.

8 0

4 years ago

the angle of elevation of a top of a tree from a certain point on the ground is 45 degree. if the tree is 15 meters high,how is

Sphinxa [80]

Answer:

15m

Step-by-step explanation:

tan° = opposite/ adjacent

tan45 = 15/x

1 = 15/x

and = 15

6 0

3 years ago

Identify which of these designs is most appropriate for the given experiment: completely randomized design, randomized block

Eduardwww [97]

Answer:

Completely Randomized Design

Step-by-step explanation:

In a completely randomized design, the samples are randomly assigned to the treatment without creating any blocks or groups.

Like here, in the given scenario, we do not have to divide subjects in two groups as they are all same.

Whereas, in a randomized block design, the participants are divided into subgroups in a way, that the variability within the blocks is less than the variability between blocks.

After dividing, the participants within each block are randomly assigned to treatment conditions.

Hence, the completely randomized design is used here.

3 0

3 years ago

Factor completely 81x8 − 1. (9x4 − 1)(9x4 + 1) (3x2 − 1)(3x2 + 1)(9x4 − 1) (3x2 − 1)(3x2 + 1)(9x4 + 1) (3x2 − 1)(3x2 + 1)(3x2 +

denis-greek [22]

Answer:

(3x^2 - 1)(3x^2 + 1)(9x^4 + 1).

Step-by-step explanation:

Using the identity for the difference of 2 squares;

a^2 - b^2 = (a - b)(a + b)

we put a^2 = 81x^8 and b^2 = 1 giving

a = 9x^4 and b = 1, so:

81x^8 − 1 = (9x^4 - 1)(9x^4 + 1)

Applying the difference of 2 squares to 9x^4 - 1:

= (3x^2 - 1)(3x^2 + 1)(9x^4 + 1).

6 0

3 years ago

Is 3/7 and 7/3 the same on the number length in the fraction line?

Artemon [7]

No 7/3 is equal to 2 1/3 while 3/7 is 3/7 (less than 1)

8 0

3 years ago