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3 years ago

10

How do you find the total length of a rectangle?

2 answers:

Diano4ka-milaya [45]3 years ago

6 0

The same way you solve any other math problem:

You use the information you're given, and all the formulas, equations, and rules
that you know that might connect what you're given to what you need to find, and
then choose the best one to find the missing answer from the given information.

faltersainse [42]3 years ago

4 0

Use the formula length x width.

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The arithmetic sequence a_ia i a, start subscript, i, end subscript is defined by the formula: a_1 = 15a 1 =15a, start subsc

daser333 [38]

Answer:

-1,512,390

Step-by-step explanation:

Given

a1 = 15

$a_i = a_{i-1} -7$

Let us generate the first three terms of the sequence

$a_2 = a_{2-1}-7\\a_2 = a_1 - 7\\a_2 = 15-7\\a_2 = 8$

For $a_3$

$a_3 = a_{3-1}-7\\a_3 = a_2 - 7\\a_3 = 8-7\\a_3 = 1$

Hence the first three terms ae 15, 8, 1...

This sequence forms an arithmetic progression with;

first term a = 15

common difference d = 8 - 15 = - -8 = -7

n is the number of terms = 660 (since we are looking for the sum of the first 660 terms)

Using the formula;

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

Substitute the given values;

$S_{660} = \frac{660}{2}[2(15) + (660-1)(-7)]\\S_{660} = 330[30 + (659)(-7)]\\S_{660} = 330[30 -4613]\\S_{660} = 330[-4583]\\S_{660} = -1,512,390$

Hence the sum of the first 660 terms of the sequence is -1,512,390

6 0

3 years ago

To solve the equation - 4 = 20, you would first add 4 to each side and then divide each side by 8. True False

castortr0y [4]

False, you would just divide 20 by -4 to get the answer.

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maxonik [38]

When the X value is zero, the Y value is negative two.

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Lily wants to buy a new smartphone. She has $500 to spend. List three ways she can get a good deal.

natta225 [31]

Answer:

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4 years ago

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