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3 years ago

BRAINLIST‼️‼️WILL GIVE BRAILIDT

Mathematics

1 answer:

lesya692 [45]3 years ago

4 0

Answer:

Step-by-step explanation:

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Precalc: Vector word problem:

charle [14.2K]

Bearing in mind that $\bf \begin{cases}
x=rcos(\theta )\\\\
y=rsin(\theta )
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I can make this much from that, check the picture below.

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4 years ago

How many ways can 5 friends sit together at the movies in 5 seats?

ss7ja [257]

Answer:

120

Step-by-step explanation:

The number of friends is 5 and there are 5 seats only. So , we can find it out with the help of permutations ,

$\implies ^n P_r = \dfrac{n! }{(n-r)!}$

⇒ 5! / (5-5)!

⇒ 5! / 1!

⇒ 5!

⇒ 5 × 4 × 3 × 2 × 1

⇒ 120

<h3>Hence there are 120 ways by which 5 friends sit together at the movies in 5 seats. </h3>

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3 years ago

Find the value of each trigonometric ratio. Simplify

AysviL [449]

Tan = opp/adj

Tan A = 16/12

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2 years ago

two terms of an arithmetic sequence are a6= 40 and a20= -16. write and explicit rule for the nth term

Gennadij [26K]

Answer:

Tn = 64-4n

Step-by-step explanation:

The nth term of an AP is expressed as:

Tn = a+(n-1)d

a is the common difference

n is the number of terms

d is the common difference

Given the 6th term a6 = 40

T6 = a+(6-1)d

T6 = a+5d

40 = a+5d ... (1)

Given the 20th term a20 = -16

T20 = a+(20-1)d

T20 = a+19d

-16 = a+19d... (2)

Solving both equation simultaneously

40 = a+5d

-16 = a+19d

Subtracting both equation

40-(-16) = 5d-19d

56 = -14d

d = 56/-14

d = -4

Substituting d = -4 into equation

a+5d = 40

a+5(-4) = 40

a-20 = 40

a = 20+40

a = 60

Given a = 60, d = -4, to get the nth term of the sequence:

Tn = a+(n-1)d

Tn = 60+(n-1)(-4)

Tn = 60+(-4n+4)

Tn = 60-4n+4

Tn = 64-4n

5 0

3 years ago

How many solutions does the nonlinear system of equations graphed below have?

k0ka [10]

Answer:

B) 2

Step-by-step explanation:

There are 2 points of intersection

3 0

4 years ago

Read 2 more answers