2 years ago

HELP ASAP PLEASE!!!!!!!!

Mathematics

1 answer:

stira [4]2 years ago

3 0

Answer:

b) in the fourth round, there was one team left in the tournament.

c) no because with only one team left, the tournament ends.

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Suppose sin a = 12/13 and sin b= 5/11. FInd cos(a+b)

m_a_m_a [10]

Answer:

1.28 or 912/715

Step-by-step explanation:

sine= opposite side/hypotenuse

cos=adjacent/ hypotenuse

sine a= 12/13 using the Pythagorean Theorem and solve for the missing side. (which is the adjacent side)

cos a = 5/13

Do the same for sine b

cos b= 9.8/11

add both the cosine value

(5/13)+(9.8/11)=1.28 or 912/715 in fraction form

6 0

2 years ago

PLEASE HELP ASAP!! ILL MARK BRAINLIEST!

allochka39001 [22]

B is the correct answer. A,C, and D will all give you the correct slope.

4 0

3 years ago

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What is the sum of the first seven terms of the geometric series 2 - 10 +50 -...?

Umnica [9.8K]

Answer:

26042.

Step-by-step explanation:

What's the first term of this geometric series?

What's the common ratio of this geometric series?

Divide one of the terms with the previous term. For example, divide the second term -10 with the first term 2.

$\displaystyle r = \frac{-10}{2} = -5$ .

What's the sum of this series to the seventh term?

The sum of the first n terms of a geometric series is:

$\displaystyle a_1 \cdot \frac{1-r^{n}}{1-r}$ ,

where

$a_1$ is the first term of the series,
$r$ is the common ratio of the series, and
$n$ is the number of terms in this series.

$\displaystyle 2 \times\frac{1- (-5)^{7}}{1- (-5)}=26,042$ .

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3 years ago

Solve y=2b+2h for b? plz help quick

Westkost [7]

The answer is b = -2h.

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3 years ago

Latoya made 2 identical necklaces, each having beads and a pendant. The total cost of the beads and pendants for both necklaces

denis23 [38]

Answer:

its 2.60 for each pendent

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2 years ago