The answer to your question is 8.1
Answer:
![10\sqrt{5} - 4 \sqrt{10}](https://tex.z-dn.net/?f=%2010%5Csqrt%7B5%7D%20%20-%204%20%5Csqrt%7B10%7D%20)
Step-by-step explanation:
![\sqrt{5} (10 - 4 \sqrt{2} )](https://tex.z-dn.net/?f=%20%5Csqrt%7B5%7D%20%2810%20-%204%20%5Csqrt%7B2%7D%20%29)
Multiply
![\sqrt{5}](https://tex.z-dn.net/?f=%20%5Csqrt%7B5%7D%20)
with each term within the bracket
![= \sqrt{5} + \times 10 - \sqrt{5} \times 4 \sqrt{2}](https://tex.z-dn.net/?f=%20%3D%20%20%5Csqrt%7B5%7D%20%20%2B%20%5Ctimes%2010%20-%20%20%5Csqrt%7B5%7D%20%20%5Ctimes%204%20%5Csqrt%7B2%7D%20)
![= 10 \sqrt{5} - 4 \sqrt{10}](https://tex.z-dn.net/?f=%20%3D%2010%20%5Csqrt%7B5%7D%20%20-%204%20%5Csqrt%7B10%7D%20)
You have to solve it first (see picture) to get only Y on one side and X on the other. Once you hah that you start from 0 because there is no Y intersect. Then you go down and over based on the slope (m=) then since it is > its going to be dotted (striped) and shaded upward
The 2 equations are classified as Identities because both sides remain the same for all values of z.
<h3>How to Classify Equations?</h3>
1) We are given the equation;
23z + 19 = 3(5z - 9) + 8z + 46
Let us try z = 0
23(0) + 19 = 3(5(0) - 9) + 8(0) + 46
19 = -27 + 46
19 = 19
Let us try z = 5;
23(5) + 19 = 3(5(5) - 9) + 8(5) + 46
134 = 48 + 40 + 46
134 = 134
Thus, this is an identity as both sides remaining the same for all values of z.
2) We are given the equation;
15y + 32 = 2(10y - 7) - 5y + 46
At y = 0, we have;
15(0) + 32 = 2(10(0) - 7) - 5(0) + 46
32 = -14 + 46
32 = 32
Let us try y = 2;
15(2) + 32 = 2(10(2) - 7) - 5(2) + 46
62 = 26 - 10 + 46
62 = 62
This is an identity as both sides remaining the same for all values of z.
Read more about Equations at; brainly.com/question/1214333
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Answer:
52,5°
Step-by-step explanation:
0,5 × (135 - 30)
= 0,5 × (105)
= 52,5°