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4 years ago

15

PLEASE HELP ASAP WILL GIVE YOU BRAINLIEST

1 answer:

zysi [14]4 years ago

8 0

Answer:

2

Step-by-step explanation:

So I guess basically 16/8 = 2

So 2 is the answer

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Find the first, fourth, and tenth terms of the arithmetic sequence described by the given rule. A(n)=1+(n-1)(-5.7)

Sphinxa [80]

$\bf n^{th}\textit{ term of an arithmetic sequence}\\\\
a_n=a_1+(n-1)d\qquad 
\begin{cases}
n=n^{th}\ term\\
a_1=\textit{first term's value}\\
d=\textit{common difference}
\end{cases}\\\\
-------------------------------\\\\
a(n)=1+(n-1)(-5.7)\qquad 
\begin{array}{llll}
term&value\\
---&------\\
a(1)&1+(1-1)(-5.7)\\
&1+0\\
&1\\
a(4)&1+(4-1)(-5.7)\\
&1+(3)(-5.7)\\
&1+(-17.1)\\
&-16.1\\
a(10)&1+(10-1)(-5.7)\\
&1+(9)(-5.7)\\
&1+(-51.3)\\
&-50.3
\end{array}$

8 0

4 years ago

What is the sum of the arithmetic series below<br> 18£2i+8

KengaRu [80]

Answer: 486? sorry i dont know for sure

Step-by-step explanation:

tell me if im wrong

6 0

4 years ago

What is the point slope for of the line with. Slope 2/5 that passes through the point (-4,-7)

WITCHER [35]

The point-slope form of a line:

$y-y_0=m(x-x_0)$

We have:

$m=\dfrac{2}{5}\\\\(-4,\ -7)\to x_0=-4,\ y_0=-7$

Substitute:

$y-(-7)=\dfrac{2}{5}(x-(-4))\\\\y+7=\dfrac{2}{5}(x+4)$

3 0

3 years ago

Plz answer as soon as possible<br> (Will report nonsense answers)

timofeeve [1]

The point at which the two lines intersect is (4,7).

7 0

3 years ago

I've tried to get the answer for this 13 times now (not joking), plzzz help: write a formula that represents the number of peopl

gtnhenbr [62]

Answer:

2820 seats
aₙ = 3n + 9

Step-by-step explanation:

<u>This is an AP with:</u>

The first term a₁ = 12
Common difference d = 3
Number of terms n = 40

<u>Number of the seats:</u>

Sₙ = 1/2*n(a₁ + aₙ) = 1/2n(2a₁ + (n - 1)d)
S₄₀ = 1/2*40(12*2 + 39*3) = 2820 seats

<u>Formula of nth term:</u>

aₙ = a₁ + (n - 1)d
aₙ = 12 + (n - 1)*3 = 12 + 3n - 3 = 3n + 9
aₙ = 3n + 9

6 0

3 years ago