The common difference, d, can be determined by subtracting the two consecutive values:
1 - 5 = -4
-3 - 1 = -4
-7 - -3 = -4
Then, using the equation:
an = a1+ d(n-1)
a_21 = 5 + (-4)(21 - 1)
a_21 = -75
The answer is letter D. I hope I was able to help you. Have a good day!
<h3><u>given</u><u>:</u></h3>
base= 25 mm
height= 28 mm
<h3><u>to</u><u> </u><u>find</u><u>:</u></h3>
the volume of the square pyramid.
<h3><u>solution</u><u>:</u></h3>
<u>
</u>
<u>
</u>
<u>
</u>
<u>
</u>
Step-by-step explanation:
<h2>This is a monster question I don't think anyone solve it for only 5 points</h2>
I'd start with setting up the equations. Calling x the number of students in most popular country 1, and y in country 2.
x + y = 44740
x - y = 5672
now solve for x1 and x2. You can subtract second from first:
0 + 2y = 39068
y = 19534
so
x = 5672 + 19534 = 25206
Add a sentence to answer it in words.
25/100 simplify and get 1/4
.25 as a decimal. 25 hundredths
