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a system of equations is shown.

2m - n = -14
-1m + 3n = 17

what is the value of n?

a. 14
b. 4
c. -5
d. 10

b.

Step-by-step explanation:

{2m - n = −14

{−m + 3n = 17

⅓[−m + 3n = 17]

{2m - n = −14

{−⅓m + n = 5⅔

____________

1⅔m = −8⅓

____ ____

1⅔ 1⅔

[Plug this back into both equations above to get the n-value of 4];

Therefore, our n-value is 4.

I am joyous to assist you anytime.

option a, c,d are correct.

step-by-step explanation:

from the given figure, it is given that z is equidistant from the sides of the triangle rst, then from triangle tzb and triangle szb, we have

tz=sz(given)

bz=zb(common)

therefore, by rhs rule,δtzb ≅δszb

by cpctc, sz≅tz

also, from δctz and δasz,

tz=sz(given)

∠tcz=∠saz(90°)

by rhs rule, δctz ≅ δasz, therefore by cpctc, ∠ctz≅∠asz

also,from δasz and δzsb,

zs=sz(common)

∠zbs=∠saz=90°

by rhs rule, δasz ≅δzsb, therefore, by cpctc, ∠asz≅∠zsb

hence, option a, c,d are correct.