3 years ago

HELP! I WILL MARK BRAINLIEST!

Mathematics

1 answer:

jekas [21]3 years ago

6 0

Answer:

Step-by-step explanation:

it is A

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Determine the sum of the arithmetic series: 5+18 +31 +44 + ... 161.

Finger [1]

Answer:

1079

Step-by-step explanation:

Hello,

18-5 = 13

31-18=13

44-31=13

161=5+13*12

So we need to compute

$\displaystyle \sum_{k=0}^{k=12} \ {(5+13k)}\\\\=\sum_{k=0}^{k=12} \ {(5)} + 13\sum_{k=1}^{k=12} \ {(k)}\\\\=13*5+13*\dfrac{12*13}{2}\\\\=65+13*13*6\\\\=65+1014\\\\=1079$

Thanks

3 0

3 years ago

A=2 b=3 c=4 1) ab - c = 2) 6c - 2b= 3) a + b - c + 5 = 4) 7c - 2a =

bekas [8.4K]

Step-by-step explanation:

1)ab-c

=2(3)-4

=6-4

2)6c-2b

=6(4)-2(3)

=24-6

=18

3)a+b-c+5

=2+3-4+5

=10-4

5)7c-2a

=7(4)-2(2)

=28-4

=24

7 0

4 years ago

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What is the value of z? enter you answer in thr box

Lunna [17]

Answer:

Step-by-step explanation:

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3 years ago

6(x - 2) = 3x - 12 + 3x

Andrei [34K]

6(x-2)=3x-12+3x
6x-12=6x-12

3 0

3 years ago

The equation (x-3)^2+(y+7)^2=64 models the position and range of the source of a radio signal. Describe the position of the sour

12345 [234]

$\bf \textit{equation of a circle}\\\\ 
(x- h)^2+(y- k)^2= r^2
\qquad 
center~~(\stackrel{}{ h},\stackrel{}{ k})\qquad \qquad 
radius=\stackrel{}{ r}\\\\
-------------------------------\\\\
(x-3)^2+(y+7)^2=64\implies [x-\stackrel{h}{3}]^2+[y-(\stackrel{k}{-7})]^2=\stackrel{r}{8^2}
\\\\\\
center~(3,-7)\qquad radius=8$

so, the broadcast location and range is more or less like the picture below.

7 0

3 years ago

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