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Iteru [2.4K]
3 years ago
7

I need help please.

Mathematics
2 answers:
galina1969 [7]3 years ago
5 0

Just use the substitution method for the number 3 into 25= 70n

25= 70(3)

25= 210

Answer is No

Nady [450]3 years ago
5 0

Answer:

No

Step-by-step explanation:

No, if you plug in 3 for 70 this happens;

25=70(3)

Seventy times 3 is obviously not 25, therefore, 3 is not a solution of the equation.

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First .... the limit of the given function is NOT EQUAL to 5 (it diverges so it has no limit).  There is a typo.  The 14 should be positive.

\lim_{x \to\ 7} \bigg(\dfrac{x^2-9x+14}{x-7}\bigg)=5

The precise definition of a limit is:

\text{If for every } \epsilon>0\text{ there exists a }\delta >0\text{ such that}\\|f(x)-L|

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f(x) = \dfrac{x^2-9x+14}{x-7}\\\\L=5\\\\a=7\\\\\\|f(x)-L|

⇒ \epsilon = \delta

When ε = 0.1,     δ = 0.1

When ε = 0.01,   δ = 0.01

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