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2 years ago

The second level of the Van Hiele Levels of geometric thought is:

Mathematics

1 answer:

faltersainse [42]2 years ago

7 0

Answer:

Abstraction

Step-by-step explanation:

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Factor the quadratic equation below to reveal the solutions. X^2+4x-21=-9

a_sh-v [17]

Answer:

x = 3 and x = -7

Step-by-step explanation:

The given quadratic equation is $x^2+4x-21=0$ . We need to find the solution of this equation.

If the equation is in the form of $ax^2+bx+c=0$ , then its solutions are given by :

$x=\dfrac{-b\pm \sqrt{b^2-4ac} }{2a}$

Here, a = 1, b = 4 and c = -21

Plugging all the values in the value of x, such that :

$x=\dfrac{-b+ \sqrt{b^2-4ac} }{2a},\dfrac{-b- \sqrt{b^2-4ac} }{2a}\\\\x=\dfrac{-4+ \sqrt{(4)^2-4\times 1\times (-21)} }{2(1)},\dfrac{-4- \sqrt{(4)^2-4\times 1\times (-21)} }{2(1)}\\\\x=3, -7$

So, the solutions of the quadratic equation are 3 and -7.

6 0

3 years ago

A line is defined by the equation. The line passes through a point whose y-coordinate is 0. What is the x-coordinate of this poi

emmainna [20.7K]

The answer to that would be 0 because the line goes through the orgin witch the points are 0

5 0

3 years ago

Solve:<br>i)x+y=5<br>ii)x-y=3<br>iii)2x+y=7<br>iv)3x-2y=0

Ulleksa [173]

Answer:

I) X+Y

when X=0

0+y=5

Y=5

When Y=0

X+0=5

X=5

(X,y)=(5,5)

(ii) X-Y=3

When X=0

0-Y=3

Y=-3

When Y=0

X-0=3

X=3

(X,Y)=(3,3(

(III) 2x+Y=7

when X=0

0+Y=7

Y=7

when Y=0

2x+0=7

2x=7

X=7/2 or 3.5

(X,Y)=(3.5,7)

(Iv)

3X-2Y=0

when X=0

0-2Y=0

-2Y=0

Y=0

When Y=0

3x-0=0

3X=0

X=0

(X,Y)=(0,0)

5 0

2 years ago

Which of the following is in standard form of quadratic?

shutvik [7]

Answer:

I think C and D options can be correct

Step-by-step explanation:

PLEASE MARK ME BRAINLIEST IF MY ANSWER IS CORRECT PLEASE

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2 years ago

Please answer this question! PLEASE! Make advertisement for Asian trade goods that change European life.

Monica [59]

Some spices Were traded from asia to europe. Some include pepper, cloves, cinomin, and nut meg. Some of these spices could cover up the taste of spoiled meat. Most europeans loved them.

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3 years ago

The second level of the Van Hiele Levels of geometric thought is:​

The second level of the Van Hiele Levels of geometric thought is: