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2 years ago

14

PLEASE HELP!!! I WILL RATE YOU 5 STARS IF CORRECT!!!!

2 answers:

katen-ka-za [31]2 years ago

8 0

Answer:

c=√2

Step-by-step explanation:

Use the Pythagorean theorem:

$a^{2} +b^{2} =c^{2}$

$1^{2} +1^{2} =c^{2}$
c=√2

Vlad1618 [11]2 years ago

6 0

I believe by using
$a ^{2} + b ^{2} = c ^{2} \: \: \: \: \: you \: will \: plug \: in \: 1 \: for \: a \: and \: b \: then \: find \: the \: square \: root \\$ you will plug in 1 for A and B then you will find the square root of the number you get after you square A and B and add them together. then you should have your answer

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Which is the decimal expansion of StartFraction 7 Over 22 EndFraction? ModifyingAbove 0. 318 with bar 0. 3ModifyingAbove 18 with

Lena [83]

The answer to the question will be 0. 3 Modifying Above 18 with bar

<h3>What will be the decimal expansion of 7 over 22? </h3>

When we divide 7 by 22 we will get 0.3181818..........

Here 3 is not repeating but 18 is repeating again and again

So it is a Non-terminating repeating number

Thus the answers to the question will be 0. 3 Modifying Above 18 with bar

To know more about Non terminating repeating numbers follow

brainly.com/question/17636098

8 0

2 years ago

Find the area of this triangle

KiRa [710]

Answer:

Area of triangle= 1/2 x base x height

Area of triangle

$= \frac{1}{2} \times 13 \times 7$

$= \frac{1}{2} \times 91$

$= \frac{91}{2}$

$= 45.5$

Therefore the area of the triangle is 45.5inch

3 0

2 years ago

A teacher places n seats to form the back row of a classroom layout. Each successive row contains two fewer seats than the prece

Alex_Xolod [135]

Answer:

The number of seat when n is odd $S_n=\frac{n^2+2n+1}{4}$

The number of seat when n is even $S_n=\frac{n^2+2n}{4}$

Step-by-step explanation:

Given that, each successive row contains two fewer seats than the preceding row.

Formula:

The sum n terms of an A.P series is

$S_n=\frac{n}{2}[2a+(n-1)d]$

$=\frac{n}{2}[a+l]$

a = first term of the series.

d= common difference.

n= number of term

l= last term

$n^{th}$ term of a A.P series is

$T_n=a+(n-1)d$

n is odd:

n,n-2,n-4,........,5,3,1

Or we can write 1,3,5,.....,n-4,n-2,n

Here a= 1 and d = second term- first term = 3-1=2

Let $t^{th}$ of the series is n.

$T_n=a+(n-1)d$

Here $T_n=n$ , n=t, a=1 and d=2

$n=1+(t-1)2$

⇒(t-1)2=n-1

$\Rightarrow t-1=\frac{n-1}{2}$

$\Rightarrow t = \frac{n-1}{2}+1$

$\Rightarrow t = \frac{n-1+2}{2}$

$\Rightarrow t = \frac{n+1}{2}$

Last term l= n,, the number of term $=\frac{ n+1}2$ , First term = 1

Total number of seat

$S_n=\frac{\frac{n+1}{2}}{2}[1+n}]$

$=\frac{{n+1}}{4}[1+n}]$

$=\frac{(1+n)^2}{4}$

$=\frac{n^2+2n+1}{4}$

n is even:

n,n-2,n-4,.......,4,2

Or we can write

2,4,.......,n-4,n-2,n

Here a= 2 and d = second term- first term = 4-2=2

Let $t^{th}$ of the series is n.

$T_n=a+(n-1)d$

Here $T_n=n$ , n=t, a=2 and d=2

$n=2+(t-1)2$

⇒(t-1)2=n-2

$\Rightarrow t-1=\frac{n-2}{2}$

$\Rightarrow t = \frac{n-2}{2}+1$

$\Rightarrow t = \frac{n-2+2}{2}$

$\Rightarrow t = \frac{n}{2}$

Last term l= n, the number of term $=\frac n2$ , First term = 2

Total number of seat

$S_n=\frac{\frac{n}{2}}{2}[2+n}]$

$=\frac{{n}}{4}[2+n}]$

$=\frac{n(2+n)}{4}$

$=\frac{n^2+2n}{4}$

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3 years ago

A group of twelve people paid a tootle of 50 for admission if 8 of them were children how many were grouped as adults and how ma

Scrat [10]

8 children ($4 x 8 = $32)
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2 senior citizens ($3 x 2 = $6)

32+12+6 = 50

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2 years ago

Which algebraic expression is a polynomial?

Degger [83]

Answer:

the last one is a polynomial

Step-by-step explanation:

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