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mojhsa [17]
3 years ago
12

What is the total in this sequence - 5 + 10 + ....... + 550 + 555?

Mathematics
1 answer:
deff fn [24]3 years ago
3 0
◆ Arithmetic Progressions ◆

Hey !!

Check the attachment.
Hope it helps you :)

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Evaluate. Write your answer in simplified, rationalized form. Do not round.
borishaifa [10]

Answer:

  cos(45°) = (√2)/2

Step-by-step explanation:

The cosine of 45° is the x-coordinate of the point on the unit circle where the line y=x intersects it. That is, it is the positive solution to the equation ...

  x^2 +x^2 = 1

  x^2 = 1/2 = 2/4 . . . . . collect terms, divide by 2, express the fraction with a square denominator

  x = √(2/4) . . . . . . take the square root

  x = (√2)/2 . . . . . simplify

The cosine of 45° is (√2)/2.

3 0
2 years ago
Find the surface area of the regular pyramid shown to the nearest whole number. plz help
Sav [38]
The surface area of the regular hexagonal pyramid is
SA = (1/2) pl + B
where p is the perimeter of the base, l is the slant height of the pyramid, and B is the area of the base
The area of a regular hexagon is 3 sh
where s is the length of the side and h is the length of the apothem.
So,
SA = (1/2)(6)(12) (11) + 3(12)(6sqrt3)
SA = 770 square meters
5 0
2 years ago
Read 2 more answers
Two teams A and B play a series of games until one team wins four games. We assume that the games are played independently and t
crimeas [40]

Answer:

4pq(p³+q³)

Step-by-step explanation:

Exactly 5 game would be when 4 wins and 1 loss of a particular person

loss has to be one of the first 4 games

A wins: qp⁴ + pqp³ + p²qp² + p³qp

= qp⁴ + qp⁴ + qp⁴ + qp⁴ = 4qp⁴

B wins: pq⁴ + qpq³ + q²pq² + q³pq

= pq⁴ + pq⁴ + pq⁴ + pq⁴ = 4pq⁴

A wins or B wins:

4pq⁴ + 4qp⁴ = 4pq(q³+p³)

6 0
3 years ago
For which value of theta is cot theta equal to cos theta?
Oksi-84 [34.3K]

Answer:

\frac{cos \theta}{sin \theta}= cos \theta

If we multiply by cross we got:

cos \theta = sin \theta cos \theta

We can divide both sides of the last equation by cos \theta and we got:

sin \theta = 1

And if we apply arcsin in both sides we got:

\theta = arcsin (1) = \frac{\pi}{2}

And the best solution would be:

C) pi/2

Step-by-step explanation:

For this case we want to solve the following equation:

cot \theta = cos \theta

And we know that by definition cot \theta = \frac{cos \theta}{\sin \theta}

And replacing we got:

\frac{cos \theta}{sin \theta}= cos \theta

If we multiply by cross we got:

cos \theta = sin \theta cos \theta

We can divide both sides of the last equation by cos \theta and we got:

sin \theta = 1

And if we apply arcsin in both sides we got:

\theta = arcsin (1) = \frac{\pi}{2}

And the best solution would be:

C) pi/2

8 0
2 years ago
A parking lot has 63 empty space. If the ratio of empty space to taken spaces is 7:4, how many spaces are there total
sweet [91]

First, find how many actual empty spaces there are to the ratio of empty spaces. (In other words, divide 63 by 7)

63 ÷ 7 = 9

Now that we know for that there are 9 sets of 7 in 63, multiply 4 by 9 to find the amount of taken parking spaces.

4 × 9 = 36

The unsimplified ratio of empty spaces to take spaces is 63:36. Add these two numbers together to find the total number of spaces.

63 + 36 = 99

<h2>Answer:</h2>

<u>There are </u><u>99 </u><u>total parking spaces.</u>

I hope this helps :)

5 0
3 years ago
Read 2 more answers
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