Answers:
First box = 864
Second box = 3136
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Explanation:
The weird looking E symbol is the greek uppercase letter sigma which stands for "sum". You'll be adding everything in the x^2 column to find that 64+144+256+400 = 864, which is already done for you in the table (as the 864 is at the bottom of the second column, in the "total" row).
In short, you just copy the 864 into the first box.
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For the second box, you'll square the 56 to get 3136
This is because the table shows that adding up all the x values leads to 56
(8+12+16+20 = 56)
So that means 
and 
Answer:
-4.2
Step-by-step explanation:
0.5 - 4.7= -4.2
Answer:
answer a
Step-by-step explanation:
The question reminds you of all the tools you need:
It says ...
"Opposite angles are equal."
So the upper right angle is x+40 just like the bottom left,
and the bottom right angle is 3x+20 just like the upper left.
And it says ...
"The sum of all angles is 360°."
You know what each of the four angles is, so you can addum all up,
set the sum equal to 360, find out what number ' x ' is, and then
use that to find the size of every angle.
Answer:
<h2>The answer is .... <u><em>
x = 3/2</em></u><em>
</em>
and if you want to write it as a mixed fraction i will be x= <u><em>
1 and 1/2</em></u></h2>
Step-by-step explanation:
Hope this Helped :)
