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2 years ago

15

What gradient is shown in the graph

1 answer:

Lelu [443]2 years ago

5 0

Answer:

-2/1 or -2

Step-by-step explanation:

in an equation this would be y=-2x-3

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Dean had already read 1 book this year before joining a book club, and he plans to read 1 book every month now that he has joine

solniwko [45]

<em>b</em><em> </em>for <em>books</em><em> </em>read. b=1x + 1. the amount of months he's been in the club goes for x and +1 because he already read a book before he joined. if you do easy math, he's been there for 8 months because he read 9 books. i probably got the equation backwards but this works both ways imo.

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3 years ago

What is the difference between the 8th multiple of8 and the 5th multiple of 8

diamong [38]

The eighth multiple of 8 is 64 .
The fifth multiple of 8 is 40 .
Their difference is 24 .

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3 years ago

What is the nth term?

kumpel [21]

Let $a_k$ denote the <em>k</em>th term of the sequence. Then

$a_k=a_1+d(k-1)$

where <em>d</em> is the common difference between consecutive terms in the sequence and <em>a</em>₁ is the first term.

The sum of the first <em>n</em> terms is

$S_n=\displaystyle\sum_{k=1}^na_k=a_1+a_2+\cdots+a_{n-1}+a_n$

From the formula for $a_k$ , we get

$S_n=\displaystyle\sum_{k=1}^n(a_1+d(k-1))=a_1\sum_{k=1}^n1+d\sum_{k=1}^n(k-1)$

$S_n=\displaystyle na_1+d\sum_{k=0}^{n-1}k$

$S_n=na_1+\dfrac{d(n-1)n}2$

$S_n=\dfrac n2(2a_1-d+dn)$

So we have $d=-5$ , and $2a_1-d=16$ so that $a_1=\frac{11}2$ .

Then the <em>n</em>th term in the sequence is

$a_n=\dfrac{11}2-5(n-1)=\boxed{\dfrac{21-10n}2}$

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3 years ago

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tino4ka555 [31]

Step-by-step explanation:

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3 years ago

how to find the area of each face of an equilateral triangular prism that has a surface area of 500 square units

KATRIN_1 [288]

Answer:Break that up

Step-by-step explanation:See how you can break up 500 to make it easier for yourself

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3 years ago

Read 2 more answers