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Nataly [62]
3 years ago
12

How to determine whether an equation is always, sometimes , or never true?

Mathematics
1 answer:
Gnesinka [82]3 years ago
3 0
I think you just need to prove it

Lets say that the equation is

10x - 6   = 4x + 12

from this, we know that 

6x   =  18
x = 3

If you put 3 and substitute it to x, you can get the same result

hope this helps


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6 0
2 years ago
Find the arc length and area of a sector with radius R =60 inches and central angle equals 30° round your answer to the nearest
Black_prince [1.1K]

Answer:

(a)31.42 inches

(b)942.48 Square Inches

Step-by-step explanation:

Given a sector of a circle with the following dimensions:

Radius of the circle =60 inches

Central Angle of the sector =30°

(a)Arc Length

Arc Length =\dfrac{\theta}{360^\circ}X2\pi r

=\dfrac{30}{360^\circ}X2*60*\pi\\\\=10\pi\\\\=31.42$ Inches (correct to the nearest hundredth)

(b)Area of the sector

Area of the sector =\dfrac{\theta}{360^\circ}X\pi r^2

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3 0
3 years ago
Read 2 more answers
Find the value of 7u+7 given that -3u-5=4
Serga [27]

Answer:

14

Step-by-step explanation:

-3u = 4+5

-3u = 9

u = -3

7u + 7

7(u +1) = 7(-3+1)

7(-2)

14

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2 years ago
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hammer [34]

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kozerog [31]
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