Given:
The four expression in the options.
To find:
Which expression is equal to –1.
Solution:
In option A,

In option B,

In option C,

![[\because \sin(\pi+\theta)=-\sin \theta]](https://tex.z-dn.net/?f=%5B%5Cbecause%20%5Csin%28%5Cpi%2B%5Ctheta%29%3D-%5Csin%20%5Ctheta%5D)

In option D,

![[\because \tan(\pi+\theta)=\tan \theta]](https://tex.z-dn.net/?f=%5B%5Cbecause%20%5Ctan%28%5Cpi%2B%5Ctheta%29%3D%5Ctan%20%5Ctheta%5D)

Therefore, the correct option is C.
Answer:
-3x^2+2xy-4y^2
Step-by-step explanation:
(x^2+xy-3y^2)-(4x^2-xy+y^2)
x^2-4x^2+xy-(-xy)-3y^2-y^2
-3x^2+xy+xy-4y^2
-3x^2+2xy-4y^2
Answer:
Every one out of 125 people got a mild allergic reaction or 0.8%
Step-by-step explanation:
64/8000 simplified by 8 is 8/1000 simplified by 4 is 2/250 simplified by 2 is 1/125
The correct answer would be c
Answer:
The linear term is -5x
Step-by-step explanation:
The linear term is the term that has the degree equal to 1.
The given function is
y = 2x^2 − 5x − 12
here 2x^2 = quadratic term i.e having degree 2
-5x = linear term i.e having degree 1
-12 = constant
so, The linear term is -5x