PLEASE HELP DUE TODAY AND IM FAILING THIS CLASS PLEASE ANSWER ALL OF THESE! -cries in autotune-

Hey there!

the answer is 136.5 ft²

Step-by-step explanation:

A= πr²=π·(3.5)²≈38.48451 = 38.5

14x7 =98

98 + 38.5 = 136.5

also you don't need to split the area of the circle in half, because both semi's are the same, so  you divide by two and multiply by two, which will cancel out.

the first one is 136. 5 the second one is

Step-by-step explanation:

1. 14*7=98 (area of rectangle) + 38.4 (area of the two sides, since they are both semicircles you can find the area of a circle with the diameter of 7) = about 136.48 which means 136.5 is the answer

2. it is a pythagorean triple so the side length is 4. so 4*3/2

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:

hello from mrbilldoesmath!

answer:

the domain is the set { -2, 0, 2, 3}

discussion:

the domain is the set of x values in the ordered pairs (x,y). taking the x, or first component, of each ordered pair gives   -2, 0, 2, 3.

you,

mrb