The average number of calories in a 1.5 ounce chocolate bar is 225. Suppose that the distribution of calories is approximately Normal with a standard deviation of
10. What can you say about 1.5 ounce chocolate bars?
Approximately 95% of 1.5 ounce chocolate bars have between 195 and 245 calories in
them.
Approximately 34% of 1.5 ounce chocolate bars have between 235 and 245 calories in
them.
Approximately 68% of 1.5 ounce chocolate bars have between 205 and 245 calories in
them.
Approximately 5% of 1.5 ounce chocolate bars have more than 245 calories in them.
Approximately 99.7% of 1.5 ounce chocolate bars have between 195 and 255 calories
in them.
my

mr. flanders’ class sold 47 doughnuts and   mr. rodriquez’s class sold 38 cartons of milk

step-by-step explanation:

let x be the number of doughnuts sold by mr. flanders’ class and y be the number of cartons sold by mr. rodriquez’s class.

1. together, the classes sold 85 items, then

x+y=85.

2. both classes earn earned $104.49 for their school. if doughnuts were sold for $1.35 each, then x doughnuts costed $1.35x. if cartons of milk were sold for $1.08 each, then y cartons costed $1.08y. hence,

1.35x+1.08y=104.49.

3. solve the system of two equations:

current in the circuit at time t is /, then the power delivered to the resistor is

step-by-step explanation:

1. 180°. the sum of the interior angles of a triangle is 180°, for the equilateral triangle that it has three equals side is 60°+60°+60°=180°.

2. 60°. each interior angle of a equilateral triangle is 60°

3. 120°. the measure of ∠m is 120°, the sum of the angles ∠m and ∠n is equal to 180°. so, in order to find the measure of ∠m, we have ∠m+∠n=180° > ∠m=180°-∠n > ∠m=180°-60°=120°.

4. 360°. the sum of the exterior angles of an equilateral triangle is ∠m+∠r+∠x=120°+120°+120°=360°. the exterior angles of any triangle always add 360°.