A,b and d are rational
When reduced, the numbers are
A)-11
B)v1 or 1
C)v2
D)v4 or 2
A number is rational if it can be represented by a fraction. All of these can be(besides c). The square root of 2 is unable to be represented in a fraction form just like pi so it is an irrational number, not a rational number. However, all of these are considered real numbers
Answer:
-12.8x - 20y + 8.4
Step-by-step explanation:
To do this you just multiply everything by negative 4
so we have 3.2x*-4 + 5y*-4 - 2.1*-4
This gives us
-12.8x - 20y + 8.4
The last term is positive because we multplied a negative by another negative
Answer:
17x² - 5x + 11 = 0
Step-by-step explanation:
To add or subtract a polynomial do the operation with like - terms.
i.e., Two terms of x² gets added or subtracted. Similarly terms of x and constant.
Here, we have to subtract:

Club all the like terms for easier simplification. We get:


Multiplying by -1 throughout:
17x² - 5x + 11 = 0 is the answer.
Answer:
y=3x+21
Step-by-step explanation:
Use slope intercept form and plug in the numbers
y=mx+b
-5 is x, 6 is y and m is 3.
6=3(-5)+b
6=-15+b
6+15=b
b=21
Now plug in the b.
y=3x+21