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statuscvo [17]
2 years ago
7

X^2 -2x -1 = 0 Pls help...show work and the answer

Mathematics
1 answer:
stepladder [879]2 years ago
3 0
x^2-2x-1=x^2-2x+1-2=(x-1)^2-2=0

Solve for x:

(x-1)^2-2=0
(x-1)^2=2
x-1=\pm\sqrt2
x=1\pm\sqrt2
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Easy pllsssssss help
viktelen [127]

Answer:

87.5(the first one)

Step-by-step explanation:

first simplify 4 to the 5th power(20) and multiply by 4 to the -7th(-35) and you will get -700 divide that by 4 to the -2nd(-8) and you will get 87.5

6 0
3 years ago
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Write Y=4/5 x+8 in standard form using intergers
9966 [12]

Answer:

B. -4x+5y=40

Step-by-step explanation:

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ARITHMETIC AND ALGEBRA REVIEW
klio [65]
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Look at the pic to see how to set up the proportion.

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Geometry Question: BK bisects angle ABC and M angle ABK=28.3 degrees. Find M angle KBC and M angle ABC.
Nookie1986 [14]

Answer:

ABK = 28.3

Step-by-step explanation:

Given

ABK = 28.3

Required

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Since BK is a bisector of ABC at B,

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7 0
3 years ago
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5. What is the<br> complement of the<br> supplement of a 110° <br> angle?
Slav-nsk [51]
<h2>Answer:   20°</h2>

<h3>Step-by-step explanation:</h3>

Supplementary angles sum up to 180 °

Complementary angles sum up to 90°.

The supplement of 110° = 180° - 110° = 70°

The complement of 70° = 90° - 70° = 20°

<u>Simplier version:</u>

The complement of the supplement of 110° = (90° - (180° - 110°))

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3 0
2 years ago
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