3 years ago

If the lines of a system of equations never intersect then, then the system has no ______.

Mathematics

1 answer:

Alex17521 [72]3 years ago

6 0

Answer:

The system has no solutions.

Step-by-step explanation:

I don know how to explain this, its just the rule.

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Evaluate-2+7x^2-2x^3-8x+7x^4 at x=5

Murljashka [212]

Answer:

4262

Step-by-step explanation:

2 + 7x^2- 2x^3-8x +7x^4 at x = 5

= 2 + 7*(5)^2 - 2*(5)^3-8*5 +7*(5)^4

=2+175-250-40+4375

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3 years ago

Evaluate the expression when a=10,b=9, and c=4.<br> 3a+2b−6c =

pav-90 [236]

Answer:24

Step-by-step explanation:

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3 years ago

Tan^2x+sec^2x=1 for all values of x. <br> true or false?

amid [387]

This is not true.

$\tan^2x+\sec^2x=\dfrac{\sin^2x}{\cos^2x}+\dfrac1{\cos^2x}=\dfrac{1-\cos^2x+1}{\cos^2x}=2\sec^2x-1$

$2\sec^2x-1=1\implies\sec^2x=1\implies\sec x=\pm1\implies x=n\pi$

where is $n$ is any integer. So suppose we pick some value of $x$ other than these, say $x=\dfrac\pi4$ . Then

$\tan^2\dfrac\pi4+\sec^2\dfrac\pi4=1+2=3\neq1$

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3 years ago

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Least common multiple 14,6

Westkost [7]

Your answer for the least common multiple will be 2

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3 years ago

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A bag of Jolly Ranchers contains 300 pieces of which 28% are blue. How many are not blue?

Harrizon [31]

Answer:

216

Step-by-step explanation:

300 x .28 = 84

300 - 84 = 216

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3 years ago

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