Answer:
z= -16/19
Multiply both sides by 2z+1
Then subtract20z on both sides
Add 6 on both sides
Divide by -19
That is x = mean of x values , y = mean of y-values:-
= (3+2)2 , (5 + 2)/2
= (2.5, 3.5) answer.
Answer:
Step-by-step explanation:
so when you multiply two numbers with the same constant, and different exponents, just add the exponents!
so it is 5 - 3 = 2
so its
Answer:
Milk $3.60
Water $1.80
Chips $0.90.
Step-by-step explanation:
If w = cost of 1 bottle of water, m = cost of 1 gal of milk and c cost of 1 bag of chips we have.
4m + 6w + 5c = 29.7
Also we have w = 2c and m = 1.8 + w.
From the first equation we have c = w/2.
So substituting for c and m in the initial equation we have:
4(1.8 + w) + 6w + 5(w/2) = 29.7
7.2 + 4w + 6w + 2.5w = 29.7
12.5w = 22.5
w = 1. 80.
So c = w/2 = 1.8/2 = 0.90.
and m = 1.8 + 1.8 = 3.60.
Answer:
a. .15 b. 5.40
Step-by-step explanation:
Hi! The first thing you want to do is find the unit rate, which would be 9 divided by 60. This should be 15 cents per hour. Next, for the second part, you multiply by 36, which should be $5.40. Hope this helps!
