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julsineya [31]
2 years ago
12

What is the answer ???

Mathematics
2 answers:
pychu [463]2 years ago
3 0
Answer: second equation
asambeis [7]2 years ago
3 0

Answer:

B

Step-by-step explanation:

a)

2x + x + 5x -9 = -6 + 9x - x + 3

8x - 9 = 8x -3

8x - 8x = -3+9

0

Has no solution.

b)

10x -6x -4-1 = 7-12+2x+2x

    4x - 5 = 4x - 5

      0 = 0

therefore has infinite solutions.

c)

7x + 5 + 4 - 9x = x + 2 - 4 +8x

-2x + 9 = 9x -2

-11x = -11

x = 1

Soluble and has a solution.

d)

5x - 2x - 3 -9 = x -12 + 3x + 3x

3x -12 = 7x -12

-4x = 0

x = 0

Has a solution.

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What is the difference between formal and informal geometry
shutvik [7]

Answer:

There is a sub-field of geometry called formal geometry which is related to algebraic geometry and deals with topics such as formal schemes , topological rings , the comparison theorem in algebraic geometry , the Grothendieck existence theorem.

Informal geometry have the topics of definitions, measurements, and constructions of geometric shapes and figures. No attention to formal proofs is given. Subtopics include points, lines, angles, triangles, quadrilaterals, circles, area, and perimeter.

Step-by-step explanation:

7 0
4 years ago
Find f'(x) if f(x) = (2/(x^1/3)) + 3 cos x + x^pi
galben [10]

The derivative of f is

f'(x)=\left(2x^{-1/3}+3\cos x+x^\pi\right)'

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3 0
3 years ago
Help with number 50 please. Thanks.
Blizzard [7]

Answer:

d = 7 + 3\sqrt{3} and

d = 7 - 3\sqrt{3}

Step-by-step explanation:

To solve the equation, d^2 - 14d - 22 = 0, using the quadratic formula,

Recall: quadratic formula = \frac{-b ± \sqrt{b^2 - 4ac}}{2a}

Where,

a = 1

b = -14

c = 22

Plug in your values into the formula and solve:

\frac{-(-14) ± \sqrt{(-14)^2 - 4(1)(22)}}{2(1)}

\frac{14 ± \sqrt{196 - 88}}{2}

\frac{14 ± \sqrt{108}}{2}

d = \frac{14 + \sqrt{108}}{2}

d = \frac{14 + 6\sqrt{3}}{2}

d = (\frac{2(7 + 3\sqrt{3})}{2}

d = 7 + 3\sqrt{3}

And

d = \frac{14 - \sqrt{108}}{2}

d = \frac{14 - 6\sqrt{3}}{2}

d = (\frac{2(7 - 3\sqrt{3})}{2}

d = 7 - 3\sqrt{3}

4 0
3 years ago
Which of the following possibilities will form a triangle?
Alenkinab [10]
I think the answer is A but I could be wrong
4 0
4 years ago
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A number decreased by 14 is -46. Find the number.
cestrela7 [59]
-60 because -46-14 = -60
8 0
4 years ago
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