Tim's electricity costs 4.3 ¢ a kilowatt hour or 100 watts. how much will it cost to run the following appliances for 10 hours? (round to the nearest cent) a dryer @ 4,000 watts. cost = a heater @ 1,500 watts. cost = a radio @ 40 watts. cost =

First, let's check the amount of power consumed by each of the appliances for 10 hours. the calculated values are shown below.

dryer = (4000 watts per hour) (10 hours) = 4 watts or 40 kw
heater = (1500 watts per hour)(10 hours) = 15000 watts or 15 kw
radio = (40 watts per hour)(10 hours) = 400 watts or 0.40 kw

now, adding the total consumed by the three appliances for 10 hours, we have

total = 40 + 15 + 0.40 = 55.40 kw

since we now have the  total power consumed, and given that electricity costs 4.30 cents per kwh, we have

cost = 55.40(4.30) = 238.22 cents 

rounding off the cost to the nearest cents, we have a total amount of 238 cents for the total electricity cost.

answer: 238 cents

and y≤ -x +4 .

step-by-step explanation:

we are given a graph for system of inequalities.

in order to write the system of inequalities for the given graph, we need to find the inequality for each of the line separately.

let us find the slope of dotted line first.

taking two coordinates on the graph.

let us say (0,0) and (3,1).

let us find the slope of the line now.

slope of the dotted line would be =.

y-intercept of dotted line is y=0 only.

plugging slope m= and b=0 in slope-intercept form y=mx+b, we get

.

the line is shaded up of that dotted line.

therefore, for shading up we would take greater than inequality symbol > .

and because it's a dotted line we would take only > symbol in place of = sign in above equation of line.

therefore, inequality for dotted line would be

.

let us take two points (3,1) and (0,4) on the solid line.

slope of the solid line would be =.

for the solid line we have y-intercept b= 4.

plugging slope m= -1 and b=4 in slope-intercept form y=mx+b, we get

y = -1x + 4.

the line is shaded down of that solid line.

therefore, for shading down we would take less than inequality symbol < .

and because it's a solid line we would take ≤ symbol in place of = sign in above equation of line.

therefore, inequality for solid line would be

y≤ -x +4 .

i think there was a typo. you wrote pat brings 3 quarts of ice-cream to the party. each serving of ice-cream is 1 6 quart. how many total servings of ice-cream does pat bring to the party? i think the bold is supposed to be 1/6. so 1 quart of ice cream = 6 servings. 6 * 3 = 18.

the answer is 18.