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2 years ago

Help with this plzzzz

Mathematics

2 answers:

kati45 [8]2 years ago

4 0

Answer:

point C

Step-by-step explanation:

both planes include point C so that is where they intersect

WITCHER [35]2 years ago

4 0

Answer:

Point C

Step-by-step explanation:

As you can see in the picture below, Point C is where both planes intersect. Point C is what both planes have in common.

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If x^2+1/x^2=3 find the value of x^2/(x^2+1)^2<br> Express answer as a common fraction.<br> Thanks!!

timama [110]

$x^2+\dfrac1{x^2}=3\implies x^4+1=3x^2\implies x^4-3x^2+1=0$

By the quadratic formula,

$x^2=\dfrac{3\pm\sqrt5}2\implies x^2+1=\dfrac{5\pm\sqrt5}2$

Then

$(x^2+1)^2=\dfrac{25\pm10\sqrt5+5}4=\dfrac{15\pm5\sqrt5}2$

$\implies\dfrac{x^2}{(x^2+1)^2}=\dfrac{\frac{3\pm\sqrt5}2}{\frac{15\pm5\sqrt5}2}=\dfrac{3\pm\sqrt5}{15\pm5\sqrt5}$

Multiply numerator and denominator by the denominator's conjugate:

$\dfrac{3\pm\sqrt5}{15\pm5\sqrt5}\cdot\dfrac{15\mp5\sqrt5}{15\mp5\sqrt5}=\dfrac{45\pm15\sqrt5\mp15\sqrt5-25}{15^2-(5\sqrt5)^2}=\dfrac{20}{100}=\dfrac15$

3 0

3 years ago

A straight line is drawn through the intersection of the two diagonals of a parallelogram. Prove that it exactly divides the par

zubka84 [21]

Answer:

I dont understand btw thanx for the points

Step-by-step explanation:

3 0

3 years ago

PLEASE ANSWER + BRAINLIEST!!!

ozzi

Answer:

C is correct

Step-by-step explanation:

Given: System of linear inequality

$y$

$y\geq 2x+3$

First we will draw the graph of system of equation and then see the correct option.

Equation 1: $y$

We will make the table.

x : -2 0 2

y : 1 0 -1

Test Point: (0,4)

0<-2 ( False )

Shaded area away from (0,4)

Equation 2: $y\geq 2x+3$

We will make the table.

x : -2 0 2

y : -1 3 7

Test Point: (0,4)

4≥3 ( True )

Shaded area towards (0,4)

Please see attachment for graph.

Hence, C is common shaded area (region)

8 0

3 years ago

Read 2 more answers

Multiple choice question

konstantin123 [22]

Answer:

b. g(x)=|x+3|-1

Step-by-step explanation:

7 0

2 years ago

Michael bought 3 12 gallons of white paint at $17.50 each gallon and 134 gallons of blue paint at $19.00 each gallon. What was h

lutik1710 [3]

312 gallons of white paint, $17.50 each gallon

134 gallons of blue paint, $19 for each gallon

312 x 17.50 = $5,460

134 x 19 = $2,546

5460 + 2546 = $8,006

8 0

3 years ago