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labwork [276]
2 years ago
11

The value of x² – 2yx + y² when x = 1, y = 2 is

Mathematics
2 answers:
Mrrafil [7]2 years ago
7 0
7
The process
1-2(2x1)+(2)^2
ki77a [65]2 years ago
5 0

x^2 - 2xy +y^2 = (x-y)^2 = (1-2)^2 = (-1)^2 =1

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Can you help me with this question plzz?​
Dominik [7]

Answer: The answer is 96 wizards.

Step-by-step explanation:

So what I like to do is fraction formatting.

you start with x/blank \frac{blank}{120} and \frac{80}{100} you do cross multiply divide

and multiple 120 by 80(=9600) and divide by 100 (=96) because wizards are 20% less of the population than goblins, so they are equivalent to 80% of the goblins! Hope this helped!

7 0
3 years ago
I need help with geometry
satela [25.4K]

Answer:

45 is the answer

Step-by-step explanation:

first you have to know the sum of interior angle of that pentagon (540)

then add the all angle.

148 + x + 112 + 90 + 3x + 10 = 540.

or, 360 + 4x = 540

or, 4x = 540 - 360

or, 4x = 180

or, x = 180/4

or, x = 45

hope it will help you☺✌

6 0
3 years ago
Read 2 more answers
William has a lemonade stand. Today he made $17.55 in lemonade sales and one third that amount in cookie sales. How much money d
ira [324]
All together he made 23.40
One third of $17.55 is $5.85
When you add $17.55 and $5.85 together you get $23.40
4 0
3 years ago
A toxic radioactive substance with a density of 2 milligrams per square centimeter is detected in the ventilating ducts of a nuc
Zolol [24]

Answer:

60.5 milligrams per square centimeter First, determine how many half lives have expired by dividing the time by the half-life. So: 55/20 = 2.75 That means that only 2^(-2.75) = 0.148650889 = 14.8650889% of the original substance remains. So just divide the amount remaining by 0.148650889 to get the original amount. 9 / 0.148650889 = 60.5445419 So originally, there was 60.5 milligrams per square centimeter 55 years ago.

3 0
4 years ago
What is the solution to this inequality?
Alika [10]

Answer:

<h2>A</h2>

Step-by-step explanation:

<em><u>e5uiitweyutwwsuoye34t</u></em>

3 0
3 years ago
Read 2 more answers
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