All categories

3 years ago

What is the sum of the series?

Mathematics

1 answer:

Stells [14]3 years ago

6 0

Answer:

Step-by-step explanation:

$\sum\limits_{i=1}^54i\to a_i=4i\\\\for\ i=1:\\\\a_1=4(1)=4\\\\for\ i=2:\\\\a_2=4(2)=8\\\\for\ i=3:\\\\a_3=4(3)=12\\\\for\ i=4:\\\\a_4=4(4)=16\\\\for\ i=5:\\\\a_5=4(5)=20\\\\\sum\limits_{i=1}^54i=4+8+12+16+20=60$

You might be interested in

Write 1.6 as a percentage.

ikadub [295]

To right 1.6 as a percentage u would write 6

4 0

3 years ago

Read 2 more answers

What does chemical erosion do

matrenka [14]

It causes the breakdown and decay to the rocks. It occurs when the weather water is slightly acidic.

5 0

3 years ago

W = 3x + 7y solve for y

mario62 [17]

Answer:

The value of the equation $y=\frac{W-3x}{7}$ .

Step-by-step explanation:

Consider the provided equation.

$W = 3x + 7y$

We need to solve the provided equation for y.

Subtract 3x from both side.

$W-3x= 3x-3x+ 7y$

$W-3x=7y$

Divide both sides by 7.

$\frac{7y}{7}=\frac{W-3x}{7}$

$y=\frac{W-3x}{7}$

Hence, the value of the equation is $y=\frac{W-3x}{7}$ .

8 0

3 years ago

Do the sides 9, 12 and 15 make a right triangle?

Fynjy0 [20]

Answer:

YES

Step-by-step explanation:

because they are all different lengths

6 0

3 years ago

Read 2 more answers

Find the measure of an angle whose complement is five times its measure.

ch4aika [34]

Answer:

The measure of the unknown angle is 15°.

Step-by-step explanation:

Represent this angle by A. Then the complement of A is 90° - A.

"Angle whose complement is five times its measure" would be expressed as

90° - A = 5A

Solve this for A by adding A to both sides:

90° = 6A. Then A = 90°/6, or 15°

4 0

3 years ago