Hi! Multiply -0.25 by the inner numbers.
-0.25 times 84 = 21
-0.25 times -32n = -8n
Then take the -n and add that
21 -8n - n
-8n - n (or -1n) = -9n
therefore, answer would be a) 21 - 9n
See explanations
Step-by-step explanation:
1.
Choosing the product of power property,when you multiply exponentials with the same base , you add their exponents.
This is represented as :

This property is true in that ;
where you have x³ × x³ , x³ is x*x*x and the other x³ is x*x*x .Adding the xs will give x⁶ which is similar to 3+3=6 xs
A numerical example could be;

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Properties of exponential functions :brainly.com/question/8742222
Keywords : properties, exponents, numerical expression
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X − 4y = 7
5x + 9y = 6
5x − 20y = 35 //1st * 5
5x + 9y = 6
5x +9y - 5x + 20y = 6 - 35 //2nd - 1st
5x + 9y = 6
29y=-29
5x=6-9y
y=-1 //1st : 29
5x=6-9*(-1)
y=-1
x=15:5 //2nd : 5
y=-1
x=3
check:
for x=3 and y=-1 there is:
x − 4y = 7 is 3 − 4*(-1) = 7 is 7=7 ok
5x + 9y = 6 is 15-9=6 is 6=6 ok
answer: (3;-1) represents the solution.
12 divided by 2/3 = 18
2/3 divided by 12 = 0.5
432-240=192
192 is the amount of shoes produced in 4 hours
194/4=48
48 is the amount of shoes products per hour