4 years ago

In space, the intersection of two planes is

Mathematics

1 answer:

Len [333]4 years ago

5 0

If these planes are not parallel then intersection would form a line.

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Find the sum of the roots the following equation. The subject is quadratic equations with a maximum power of two (things like a(

Alexus [3.1K]

$\bf (2x^2-3x)^2+4(2x^2-3x)+3=0\qquad \boxed{a=2x^2-3x}\implies a^2+4a+3=0 \\\\\\ (a+3)(a+1)=0\implies a= \begin{cases} -3\\ -1 \end{cases}\qquad \stackrel{\textit{their sum}}{-3-1\implies -4}$

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3 years ago

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4/7 divided by 34 6/7

lesya692 [45]

5712 is the answer. Hope it helps.

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3 years ago

Evaluate and Solve 6x + 4 > 7

DedPeter [7]

Answer:

x>1/2

Step-by-step explanation:

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3 years ago

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The differencee of 3 times a number and 18 is 39

Bingel [31]

Answer:

3x-18 = 39

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x = 19

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Step-by-step explanation:

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4 years ago

7. Evaluate f(x) = -2x - 5 for x = 3. A. 1 B. 11 C. –6 D. –11

Yuliya22 [10]

I think the answer is d. -11

Explanation:

Replace the variable x with 3 in the expression.
f(3)=-2•3-5

Multiply -2 by 3
f(3)=-6 -5

Subtract 5 from -6
f(3)= -11

Then the answer should be -11.

4 0

3 years ago