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3 years ago

Identify a value k that makes (x+5) a factor of x^3+kx^2-x+45 will mark brainliest

Mathematics

1 answer:

coldgirl [10]3 years ago

4 0

Answer:

We should attempt synthetic division to find when

−

has a remainder of

, which would signify that it is a factor of the polynomial.

The synthetic substitution would be set up as:

−

∣

−

−−−

Treating the synthetic division like any other synthetic division problem, we see that

−

∣

−

−−−

−−−−−−−−

−

−−−−−−−−

−

−−−−−−−−−

−

If the remainder equals

, then we know that

−

(

−

)

Solve this to see that

Thus,

(

−

)

is a factor of

−

You might be interested in

Two angles form a linear pair. The measure of one angle is 15 times the measure of

navik [9.2K]

Answer:

11.25°, 168.75°

Step-by-step explanation:

Linear pair are supplementary.

let one angle be x then the other angle is 15x, so

x + 15x = 180

16x = 180 ( divide both sides by 16 )

x = 11.25

Thus

one angle = 11.25° and the other angle = 15 × 11.25° = 168.75°

6 0

3 years ago

Need answer ASAP! Please see screen shot.

vivado [14]

Answer:

0.4 or $\frac{2}{5}$

Step-by-step explanation:

James spun the arrow 30 times which means 30 is the total. In other words, it's your denominator ( $\frac{x}{30}$ ). It landed on the blue section 12 times which means 12 is the part of the whole. In other words, it's your numerator ( $\frac{12}{y}$ ). Plug in the entire fraction and you get $\frac{12}{30}$ . Divide 12 by 30 and you get 0.4 or if you divide both the numerator & denominator by 6, you get $\frac{2}{5}$ . Either one works, depending on what your question asks for.