This means that 650 is 38% of the amount the grocer spent before making a cut in the budget. Set up and equal proportion to solve: 650/x = 38/100 → 650*100 = 38x → approximately $1710.53 spent last year
Hope this helps
Answer:
b = 7/2
x = 11/2
y = 21/2
z = -4
Step-by-step explanation:
2x + 2y + 2z = 24
x + y + z = 12
b + 2x + y + z = 21
2b + 2y = 28
b + y = 14
3x + y + z = 23
we can start anywhere by transforming these equations in a way that always one variable is excised by others.
so, e.g.
b = 14 - y
14 - y + 2x + y + z = 21
2x + z = 7
z = 7 - 2x
3x + y + 7 - 2x = 23
x + y = 16
16 + z = 12
z = -4
-4 = 7 - 2x
-11 = -2x
11 = 2x
x = 11/2
11/2 + y = 16
y = 16 - 11/2 = 32/2 - 11/2 = 21/2
b = 14 - 21/2 = 28/2 - 21/2 = 7/2
10%= 80
5%=40
80 x 4= 320
320+40=360
the answer is 360
Answer:
140 W
Step-by-step explanation:
Power is measured in joules per second, or watts. A joule is a measure of energy equal to 1 newton-meter. These unit relationships tell you how to combine the numbers:
power = (35 N)(20 m)/(5 s) = (35·20/5) N·m/s = 140 J/s = 140 W
