Another math question i can't figure out..?

Question

(px)y= : ?

These are my options

px+y
pxy
ypx
pxy
None of these

Answer 1

Both previous responders are incorrect. p and x are factors, not terms. The result is pxy.

Answer 2

The answer to this question can be pxy, ypx, xpy etc. It does not depend on the order of letters as it is multiplication. When you multiply unknown values you join them together like x(z) becomes xz or t multiplied by r becomes tr. The order of letters does not matter- take this example- the answer of 2 X 3 X 4 X 7
is the same as any other number order like 3 X 2 X 7 X 4!

Answer 3

(px)y

The expression tells us to multiply px by y. Since we know that px means "p times x," and multiplication is associative and commutative,
(px)y = p(xy) = pxy = pyx = xpy etc....

The convention is to write the variables in alphabetical order.
Therefore,
(px)y = pxy

^_^

Answer 4

It's just a product (multiply), so you have to erase the parenthesis.

(px)y = pxy

Answer 5

Wouldn't you just multiply each term by y? So you'd get pyxy?

Okay go with pxy.

Answer 6

x = # of nickels y = # of quarters x + y = 40 is additionally written as y = 40 - x .05x + .25y = 6.40 plug in 40 - x for y interior the 2nd equation .05x + .25(40 - x) = 6.40 .05x + 10 - .25x = 6.40 -.20x + 10 = 6.40 -.20x = -3.60 x = 18 18 nickels and 22 quarters

Answer 7

ignore the px for now. just solve
ex: (f)y=x+6
y=x+6--graph

Answer 8

give up the subject now

Answer 9

y(px)=(ypx)=ypx

Answer 10

pyxy