Ask question

Ask question

All categories

3 years ago

15

Given 6 terms what is the sum of 10+25+40+...+85

1 answer:

sdas [7]3 years ago

3 0

Sn = n/2 ( a1+an)
= 6/2 (10+85)
= 3 (95)
= 285

You might be interested in

I need help please, pretty simple

Anvisha [2.4K]

It’s the third one divide 6 by w and get 4.5

8 0

3 years ago

Read 2 more answers

Whats 2+2 equal? I need help.

Nutka1998 [239]

Answer:

The answer is four.

Step-by-step explanation:

II + II= IIII

4 0

3 years ago

Read 2 more answers

Expand and simplify 4(2x +7) – 3(x + 5)

Vikentia [17]

Answer:

$4\left(2x+7\right)-3\left(x+5\right)=5x+13$

Step-by-step explanation:

Given the expression

$4\left(2x+7\right)-3\left(x+5\right)$

<u>Expand and simplify the expression</u>

$4\left(2x+7\right)-3\left(x+5\right)$

Expand 4(2x + 7) = 8x + 28

$4\left(2x+7\right)-3\left(x+5\right)=8x+28-3\left(x+5\right)$

Expand -3(x + 5) = -3x - 15

$=8x+28-3x-15$

Group like terms

$=8x-3x+28-15$

Add similar elements: 8x - 3x = 5x

$=5x+28-15$

Simplify

$=5x+13$

Therefore, we conclude that:

$4\left(2x+7\right)-3\left(x+5\right)=5x+13$

6 0

3 years ago

Which expression is equivalent to<br> -80 ?

aalyn [17]

Answer:

The answer is C.

Step-by-step explanation:

7 0

3 years ago

How to graph the line y=4/3x

ankoles [38]

Answer:

make a table of values

Step-by-step explanation:

then plot using those values

3 0

3 years ago