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sdas [7]
3 years ago
8

4(x-2)=4x-8 is this equation always true

Mathematics
2 answers:
Vinil7 [7]3 years ago
8 0

Distribute 4 over the parentheses:-

4(x - 2) = 4x - 8  which is identical to the right side.

Yes  - this is always true for any values of x,  and its called an identity.

VashaNatasha [74]3 years ago
3 0

Yes, 4(x-2) is 4 times x-2 which using the distributive property gives you 4x-8 because 4 times x is 4x and 4 times -2 is -8 so you would always get 4x-8

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6 0
3 years ago
A metro car in New Orleans travels 4 miles in 3 minutes. If the relationship between distance, in miles, and time, in minutes, o
KATRIN_1 [288]

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The awnser is C

Step-by-step explanation:

8 0
3 years ago
Find an equation of the sphere with point P such that the distance from P to A(−2, 6, 2) is twice the distance from P to B(4, 3,
Sveta_85 [38]

Answer:

3*x^{2} - 36*x + 3*y^{2} -12*y + 3*z^{2} -4*z + 62 = 0

Step-by-step explanation:

The distance from a point P = (x,y,z) to another point A = (a,b,c) is given by ((x-a)^{2} + (y-b)^{2} + (z-c)^{2})^{1/2}.

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If we power by 2 both sides of the equality to remove the square roots, we have:

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And solving every parenthesis and operating the similar terms, we have:

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(3*x^{2} - 36*x +62) + (3*y^{2} -12*y + 0) + (3*z^{2} -4*z + 0) = 0

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3*x^{2} - 36*x + 3*y^{2} -12*y + 3*z^{2} -4*z + 62 = 0

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Just took the test and got it right

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