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lys-0071 [83]
2 years ago
15

9. How many planes are shown in the figure?

Mathematics
1 answer:
Paraphin [41]2 years ago
3 0
<h3>9)</h3><h3>5 planes</h3>

<h3>10)</h3><h3>2 planes</h3>

<h3>11)</h3><h3>BCED</h3>

<h3>12)</h3><h3>Yes , they belong to plane (w)</h3>
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HELP NO LINKS OR TROLLING
jekas [21]

Answer:

20.28 cm²

Step-by-step explanation:

The rectangle on the bottom is 7 cm by 2 cm.

The semicircle has a diameter of 7 cm - 1 cm - 2 cm = 4 cm

diameter = 4 cm

radius = diameter/2 = 2 cm

total area = area of semicircle + area of rectangle

total area = (1/2)πr² + LW

total area = (1/2)(3.14)(2 cm)(2 cm) + 7 cm × 2 cm

total area = 20.28 cm²

3 0
3 years ago
According to Descartes's rule of sign, how many possible positive and negative roots are there for the equation
damaskus [11]
<h2>Descartes Rule of Sign</h2><h3>Answer:</h3>

There are 3 Real Roots for the Equation

<h3>Step-by-step explanation:</h3>

According to Descartes Rule of Sign, The maximum number of real roots a polynomial equation has is the number of times the sign of term changes from a higher power term to a lower power term.

In the given equation, 0=-4x^6-3x^5+2x^2-4x+1, we can already see that from \red -4x^6 to \red -3x^5 we can see that the sign didn't change so there might be no real roots. From \red -3x^5 to \blue +2x^2, we can see that the signs change so we now know that there might be 1 real root for equation. From \blue +2x^2 to \red -4x, the signs changed so there might be 2 real roots. From \red -4x to \blue +1, it changed again so there might be 3 real roots. There are no other term with lesser power to compare for \blue +1 so we are left with 3 real roots.

7 0
3 years ago
Read 2 more answers
Find the product of the binomials,<br> (x - 3)(x + 2) (x + 4) =
erastovalidia [21]

Answer:

Step-by-step explanation:

(x - 3)(x + 2) (x + 4) =

x^3+3x^2-10x-24

6 0
3 years ago
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Finding x :8x + 10 - 5x = 15.​
Misha Larkins [42]

Answer:

Here you go! 8x+10-5x!

Just kidding. here you go. x=1.66

Step-by-step explanation:

you can simplifiy the x´s by making it 3x by subtracting. You can also subract 10 from both sides. That leaves you with 3x=5.

x=1.66

7 0
4 years ago
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Draw a number line and mark all described points on it.
enot [183]

Answer:

<em>See attached</em>

<u>Numbers are either negative or greater tan 5:</u>

  • x < 0 and x > 5
  • or
  • x = (-∞, 0) ∪ (5, +∞)

7 0
3 years ago
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