Answer:
x = 2 + √2
x = 2 - √2
Step-by-step explanation:
- x² + 2x + 1 = 0
x² - 2x - 1 = 0
Here,
a = <em>1</em>
b = <em>- 2</em>
c = <em>- 1</em>
Now,
Discriminant
D = b² - 4ac
= (-2)² - 4(1)(-1)
= 4 + 4
= 8
=2√2 > 0
<em><u>Real and </u></em><em><u>D</u></em><em><u>istinct roots </u></em>
x = - b +- √b² - 4ac/2a
= - (-2) +- √ = (-2)² - 4(1)(-1)/2(1)
= 2 +- √4 + 4/2
= 2 +- √8/2
= 2 +- 2√2/2
= 2 +- √2
x = 2 + √2 or x = 2 - √2
Answer:
y = 10x + 6.
Step-by-step explanation:
y = mx + c
Here the slope m = 10 and c = 6 ( the y-intercept)
It's 6 because the point (0, 6) lies on the y-axis (where x = 0).
Answer:
x ≈ 1051.368672
Step-by-step explanation for #3:
<em>Use tangent function because it relates to the opposite and adjacent sides of the triangle.</em>
<em />
<em />
<em />
<em />
<em />![x = 12[tan^{-1}(24)]](https://tex.z-dn.net/?f=x%20%3D%2012%5Btan%5E%7B-1%7D%2824%29%5D)
<em />
x ≈ 1051.368672
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Thanks!
Answer:i kinda don't understand but i guess you mean sqrt11/2?
Step-by-step explanation:2x^2+11=0 easy move
Answer:
figure A the perimeter is 2(l+b)
2(3+12)=
2(15)=
30
figure B the perimeter is 2(l+b)
2(24+96)=
2(120)=
240
the scale of figure A to figure B is 30:240=
30/240=
1/8
