I believe the answer should be -4+x= -4x.
I hope this helps :)
Answer:
x = 4 - 1 = 3
Step-by-step explanation:
2(4 - y) + 3y = 9
8 - 2y + 3y =9
8 + y = 9
y = 1
Answer:
d)
Step-by-step explanation:
Which algebraic expression is a polynomial?

Answer: A polynomial is an expression with variables and coefficients separated by addition and subtraction. The following are used when determining if an expression is a polynomial:
i) Variables of a polynomial must not have negative exponent.
ii) Variables of a polynomial must not have fractional exponent.
iii) Dividing by an exponent is not allowed
iv) Exponent radicals are not allowed.
a)
is not a polynomial because dividing by an exponent is not allowed.
b)
, is not a polynomial because exponent radicals are not allowed (√m)
c)
is not a polynomial because dividing by an exponent is not allowed.
d)
is a polynomial
There is no solution. Here is the explanation with both of the methods :)
Answer:
B) y = 129º
Step-by-step explanation:
since a triangle is 180º in total, the you have to subtract 71 and 58 from 180 which will give you 51º which gives you the amount for x
and the line that the triangle is on is also 180º in total, so you subtract the 51 from 180 to give you a total of 129º which is the amount for y