The windows of a downtown office building are arranged so that each floor has six fewer windows than the floor below it. If the ground floor has 52 windows, how many total windows are on the first eight floors?

Answers

Answer 1

Answer: The ground floor: 52 windows.
We will use the arithmetic sequence:
a 1 = 52
d = - 6
a n = a 1 + ( n - 1 ) d
a 8 = a 1 + 7 d
a 8 = 52 + 7 * ( - 6 ) = 52 - 42 = 10
S n = n/2 * ( a 1 + a n )
S 8 = 8/2 * ( 52 + 10 ) = 4 * 62 = 248
Answer:
There are 248 windows on the first eight floors.

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On a school field trip, the bus travels 16 miles in 30 minutes. Find the speed of the bus in miles per hour. Use the equation dequals=rt, where d is distance, r is rate, and t is time.

Answers

If it travels 16 miles in 30 minutes, double that its 32 miles in 60 minutes.

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Nine times a number is three thousand six hundred what is the number?

Answers

The way this should be set up is:

9a = 3600...

So you must divide '9' on both sides, canceling out the '9', and making the 3600 to be '400'..

So the problem should look like: a = 400 <--- (Answer)

Hope it helped.. :)

=>Let the number be a ...=>Nine times the number: 9a ...=>Nine time a no. Is 3600 : 9a = 3600...=>9a = 3600=>a = 3600/9=>a= 400..=>So the number is 400..Hope It helps!!

What do a rectangle and a rhombus have in common? Select all that apply.The opposite sides are parallel.
They have four right angles.
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They have four congruent sides.

Answers

The opposite sides are parallel.
Their angle measures add to 360°

the angle of depression from a plane to the airport is 34°. the pilot reports that the plane's altitude is 3200 feet . find the horizontal distance between the plane and the airport to the nearest foot

Answers

$look\ at\ the\ picture\n\ncot34^o=(x)/(3200)\n\ncot34^o\approx1.4826\n\n(x)/(3200)=1.4826\ \ \ \ /\cdot3200\n\nx=4744.32\ (ft.)\approx4744\ (ft.)\leftarrow answer$

Wendy is arranging books on the bookshelves in the school library. The total number of books she arranges is given by the equation b = 12r, where b is the total number of books and r is the number of rows. Each row contains the same number of books.If Wendy arranged 16 rows she arranged a total of what books

Answers

the answer is 192 book. the reason why is because if you have 12 books each in 16 rows, you would like to MULTIPLY to find out how much in total. so
1
12
×16
---
72
+120
-------
192 books

What is the volume of the rectangular prism pictured below?20 yd
5 yd
5 yd
a
500 yd2
О Б
100 yd2
Oc
50 yd?
Od
200 yd?

Answers

Answer:

a- 500yd^3

Step-by-step explanation:

volume=lwh

=5x5x20

=500

brainliest appreciated!!

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1+3+5......+99 Si rezolvarea va rog fiindca nu inteleg !!

Please help me asapp math is shi