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Andreas93 [3]
3 years ago
10

When will n(A∩B)=0? Explain and give an example.

Mathematics
1 answer:
andrew11 [14]3 years ago
8 0

Answer:

Two sets are called disjoint if they have no elements in common. For example:

The sets S = { 2, 4, 6, 8 } and T = { 1, 3, 5, 7 } are disjoint.

Another way to define disjoint sets is to say that their intersection is the empty set,

Two sets A and B are disjoint if A ∩ B = 0.

In the example above,

S ∩ T = ∅ because no number lies in both sets.

Step-by-step explanation:

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How do you Factor this equation
algol [13]

Answer:

(x+4)(x+4)

Step-by-step explanation:

The middle number is 8 and the last number is 16. Factoring means we want something like (x+_)(x+_). We need two numbers that add together to get 8 and multiply together to get 16. The number 4 works perfectly in this equation. That's why (x+4)(x+4) is the factor of the equation x^2 + 8x + 16.

5 0
3 years ago
WILL MARK BRAINLIEST suppose a-1/a=5. Find a^2 + 1/a^2
amid [387]

Answer:

a= 1/(a-5) then a2-1/A2 = 5√29

Step-by-step explanation:

7 0
3 years ago
A group of friends buys 15 movie tickets for a total of $147.66, which
Vedmedyk [2.9K]

Answer: $9.20

Step-by-step explanation:

Divide the full tax price by the sales tax (7% or .07) plus 1 (always add 1 to the tax) thus

$147.66 / 1.07 = $138.00

So $138.00 is the full price without tax.

Now divide $138.00 by the amount of tickets (15) to find a single ticket price before tax!

138.00/15 = $9.20

Remember to always add 1 to the tax percentage above when dividing to get the *pre-tax* price.

7 0
3 years ago
Select the correct answer.
Nookie1986 [14]

Answer:

Correct option: C.

Step-by-step explanation:

(Assuming the correct function is R(x) = 2x^2 + 3x + 5)

To find the input value that gives the value of R(x) = 19, we just need to use this output value (R(x) = 19) in the equation and then find the value of x:

R(x) = 2x^2 + 3x + 5

19 = 2x^2 + 3x + 5

2x^2 + 3x -14 = 0

Solving this quadratic function using the Bhaskara's formula (a = 2, b = 3 and c = -14), we have:

\Delta = b^2 - 4ac = 9 + 112 = 121

x_1 = (-b + \sqrt{\Delta})/2a = (-3 + 11)/4 = 2

x_2 = (-b - \sqrt{\Delta})/2a = (-3 - 11)/4 = -3.5

So looking at the options, the input to the function is x = 2

Correct option: C.

3 0
3 years ago
If an orange seller bought 5 dozen oranges at the rate of tk.60 per four and sold them at the rate of tk50 per four,how much did
hodyreva [135]

Answer:

tk 30

Step-by-step explanation:

5 dozen = 5 * 12 = 60 oranges

12/4 = 3

total cost = 60 * 3 = tk.180

total sell = 50 * 3 = tk 150

total lose = 180 - 150 = tk 30

7 0
3 years ago
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