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BlackZzzverrR [31]
2 years ago
9

Solve by completing the square

Mathematics
1 answer:
xz_007 [3.2K]2 years ago
7 0

Step-by-step explanation:

{x}^{2}  + 2x - 2 = 0

Now Adding three on both sides we get

{x}^{2}  + 2x - 2 + 3 = 0 + 3

{x}^{2}  + 2x + 1 = 3

{(x + 1)}^{2}   = 3

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One-stray Problem Solving
anygoal [31]
A) 5000 m²
b) A(x) = x(200 -2x)
c) 0 < x < 100
Step-by-step explanation:
b) The remaining fence, after the two sides of length x are fenced, is 200-2x. That is the length of the side parallel to the building. The product of the lengths parallel and perpendicular to the building is the area of the playground:
A(x) = x(200 -2x)
__
a) A(50) = 50(200 -2·50) = 50·100 = 5000 . . . . m²
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c) The equation makes no sense if either length (x or 200-2x) is negative, so a reasonable domain is (0, 100). For x=0 or x=100, the playground area is zero, so we're not concerned with those cases, either. Those endpoints could be included in the domain if you like.
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2 years ago
MARK BRAINILEST
dusya [7]

Answer:

a greater-than negative 21 and one-third

Step-by-step explanation:

3/4a>-16

divide both sides by 3/4

a>-16*4/3

a>-64/3

a>-21 1/3

so then

a greater-than negative 21 and one-third

6 0
3 years ago
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What is a equivalent expression for -3(7+5g)
bogdanovich [222]

Answer:

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Step-by-step explanation:

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By simplifying

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Area of the square is 804.25. So add them toget her and you get your answer.

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