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iragen [17]
4 years ago
10

Please answer this and don’t ignore

Mathematics
1 answer:
77julia77 [94]4 years ago
8 0

Answer:

see below

Step-by-step explanation:

the\:x=2\:,\:x=1\:and\:the\:x=0\:are\:correct

the mistakes are in the transision of the green lines, because a

(-x)^2=x^2

so the value of h(x) for 2 and 1 is equal to -2 and -1

the only thing that changes is the coordinate of x

that turns into -x

so the answers are

(-1,-\frac{1}{4})\\\\(-2,-1)

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a. For each of the Five Platonic Solids, count the number V of vertices, the number F of faces, and the number E of edges. Check
natita [175]

Answer:

1. The tetrahedron has 4 vertices, 6 edges and 4 faces. Then V-E+F=4-6+4=2

2. The cube has 8 vertices, 12 edges and 6 faces. Then V-E+F=8-12+6=2

3. The octahedron has 6 vertices, 12 edges and 8 faces. Then V-E+F=6-12+8=2

4. The icosahedron has 12 vertices, 30 edges and 20 faces. Then V-E+F=12-30+20=2

5. The dodecahedron has 20 vertices, 30 edges and 12 faces. Then V-E+F=20-30+12=2.

8 0
3 years ago
Select the correct answer from each drop-down menu.
maxonik [38]

Answer:

(b)\\\tan x, \cot x

Step-by-step explanation:

Given

trigonometric function is

\dfrac{\cos 2x-\cos 4x}{\sin 2x+\sin 4x}

Applying trigonometric formulae

\Rightarrow \cos C-\cos D=-\sin (\dfrac{C+D}{2})\sin (\dfrac{C-D}{2})\\\\\Rightarrow \sin C+\sin D=\sin (\dfrac{C+D}{2})\cos (\dfrac{C-D}{2})

\Rightarrow \dfrac{\cos 2x-\cos 4x}{\sin 2x+\sin 4x}=\dfrac{2\sin 3x\cdot \sin x}{2\sin 3x\cdot \cos x}\\\\\Rightarrow \dfrac{\sin x}{\cos x}=\tan x

option (b) is correct

\Rightarrow \dfrac{\cos 2x+\cos 4x}{\sin 2x-\sin 4x}=\dfrac{2\cos 3x\cdot \cos x}{2\cos 3x\cdot \sin (-x)}=-\cot x

6 0
3 years ago
What are the answers to these??
Mariulka [41]
7a. Line D
7b. Lines A and B
7c. Lines A and D
7d. Lines B and D
4 0
4 years ago
Help!! ASAP!! THANKS AND NO FILES!! It's also on Khan academy!!
Natalka [10]

Answer: 44

Step-by-step explanation:

Sum of all angles is 180 so it is 103+33+x = 180.

so, it is 136+x = 180

x = 180-136 => 44

3 0
3 years ago
If the velocity of a bicycle is 10 m/s how long will it take to cover a distance of 18 km<br>​
Sergeeva-Olga [200]

Answer:

time taken=1800 seconds

Step-by-step explanation:

velocity=v=10m/s

distance=S=18km=18×10³m=18000m

t=?

as we know that

velocity=\frac{distance covered}{time taken}

velocity×time taken=distance covered

now here we have to find time

time taken=\frac{distance covered}{velocity}

time taken=\frac{18000m}{10m/s}

time taken=1800seconds

6 0
3 years ago
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