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ddd [48]
3 years ago
11

Solve 6 sec^2x-1= 7.

Mathematics
1 answer:
Dominik [7]3 years ago
5 0
X=4

2x-1=7
Move the constant to the right - 2x=7+1
Calculate - 2x=8
Divide both sides - x=4
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How many elements are in the union of five sets if the sets contain 10,000 elements each, each pair of sets has 1000 common elem
masya89 [10]

Answer:

40951

Step-by-step explanation:

Using the principles of inclusion - Exclusion

Where C(n,r)=n!/(n-r)!r!

Total elements in the five sets including number repetition is given as (10000)×C(5, 1) =10000× 5!/(5-1)!1!=10000×5=50000

Total Number of elements in each pair including number repetition of sets is given as

=(1000) × C(5, 2) =10000

Number of elements in each triple of sets is given as

=(100) × C(5, 3) =1000

Number of elements in every four sets

=(10) × C(5, 4)=50

Number of elements in every one set

(1) × C(5, 5)=1

Therefore total number of unique elements=50000-10000+1000-50+1

=40951

5 0
3 years ago
Find the area of the circle to the nearest whole number, if necessary!
astra-53 [7]

Answer:

The circle has an area of about 1385 square mm.

Step-by-step explanation:

Let's recall that circles have an area that can be found with the following formula:

A=\pi r^{2}

where r is the radius of the circle.

Now, focus your eyes on the circle. We are shown that the diameter of this circle is 42 mm, but we only want the radius. Since the radius is half the diameter, the radius is 21 mm. Now, we can solve for the area of the circle.

A=\pi (21)^2\\A=441\pi \\A=1385.44236...

So, to the nearest whole number, the area of the circle is 1385 square mm.

5 0
1 year ago
Pleaseeee help me I really need it
Agata [3.3K]

Answer:

The correct answer was

1=Zero product property

2=square root property

Step-by-step explanation:

3 0
2 years ago
Read 2 more answers
HELP ME PLEASE ASAP!!!!
Naddika [18.5K]

Answer:

A = 22.62

Step-by-step explanation:

Remember law of tan

tan = opposite/adjacent

tan (A) = 5/12

A= tan inverse ( 5/12)

A = 22.62

6 0
3 years ago
The probability of rolling an even number with a six-sided number cube
Vinvika [58]

Answer:

Equally likely

Step-by-step explanation:

Equally likely means that it’s a 50% percent chance on both sides meaning that equally likely Is the answer.

3 0
2 years ago
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