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shtirl [24]
1 year ago
8

Can someone help me find the answer to the following?

Mathematics
1 answer:
Ludmilka [50]1 year ago
5 0

To solve this, we'll use Euler's Polyhedral formula.

This formula states that in any polyhedron, the number of vertices V, faces F, and edges E, satisfy:

V+F-E=2

If we solve for the edges E, we'll get:

V+F-2=E

Using the data given,

\begin{gathered} V+F-2=E \\ \rightarrow6+8-2=E \\ \rightarrow12=E \end{gathered}

We get that the polyhedron would have 12 edges

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The first three steps of completing the square to solve the quadratic equation x^2 + 4x - 6 = 0, are shown below.
SpyIntel [72]
<span>The first three steps of completing the square to solve the quadratic equation x^2 + 4x - 6 = 0, are shown below.

step 1: x^2 + 4x = 6
step 2: x^2 + 4x + 4 = 6 + 4
step 3: (x + 2)^2 = 10
step 4: x + 2 = +/-sqrt(10)
step 5: x = sqrt(10) - 2, or x = -sqrt(10) - 2

so the steps are in order.</span>
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3 years ago
Original Equation:<br> 4+ (4 + x) = 3<br> First Step:<br> (4 + 4) + x = 3
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Step-by-step explanation:

(4+4)+x=3

8+x=3

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7 0
3 years ago
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Can someone help me wit this problem it is 20 points and i need to work on it for school and i Am very confused. Please help
LUCKY_DIMON [66]
So the slope of the first line is 4/3. If this line is perpendicular, then you have to flip it and switch the sign (flip it n switch it (how I remember it)). So the slope of the new line is -3/4.
Then you have to plug in the point you're given and the new slope. Use y=mx+b format.
-1=-3/4*-4+b
Then solve for b.
-3/4*-4 is 3.
-1=3+b
Subtract 3 from each side.
-4=b.
So now you have the y-intercept and slope. All you have to do is plug it in.
y=-3/4x + -4 or y=-3/4 - 4
There's your answer!
3 0
4 years ago
(5x+x^4) - (3x^4+4x)<br> pls help i dont know how to do it with the minus in the middle
Alex73 [517]

5x + x^4 - (+3x^4) - (+4x)

5x + x^4 - 3x^4 - 4x

x - 2x^4

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6 0
3 years ago
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Answer:

D. 0.77

Step-by-step explanation:

Jonas builds a snow fort. He tells his friends it is 0.8 meters tall inside, but he rounded the height to the nearest tenth. Which could be the height of the snow fort before Jonas rounded it?

Check all options by rounding to the nearest tenth

A. 0.89 m

= 0.9 m

B. 0.74 m

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C. 0.85

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Note: Digits 0 - 4 are rounded down while digits 5 - 9 are rounded up

Rounding to the nearest tenth means having one digits after the decimal point

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