Hcs algebra i a
taylor
determining accuracy
jen solved the equation 100 - 1x = 92 to determine the number of questions, x, she answered incorrectly on a
test. she began by subtracting 100 from both sides, then multiplying both sides by-2. which best describes the
accuracy of jen's work?
incorrect. she needed to add 100 to both sides instead of subtracting 100.
incorrect. she needed to multiply both sides by -2 first, then subtract 100.
correct. she could have also subtracted 100 from both sides, then divided by -
correct. she could have also multiplied both sides by - 2 first, then subtracted 100.

answer: (1,3) and (-2,0) i think.

$6.42

step-by-step explanation:

d. $180

step-by-step explanation:

if the dimensions of the room is 9ft by 12 ft, we have the area of the floor as,

so the area of the floor is 108 square feet, converting that into square yards we get,

the cost of carpet is $15 per square yard, therefore the cost of carpet for 12 square yards is,

hence, the cost of carpet is $180.

assuming the dimensions of the room be,

15 ft by 12 ft

so, the area of the floor of that room is,

we can convert 180 square feet into square yards, we know that,

1 sq ft = 0.111 sq yard

so, 180 square feet is,

so the area of floor is 20 square yards.

now, the cost of carpet is 15 dollars per square yard, therefore the cost of carpet for 20 square yards is,

so, it will cost $300.

step-by-step explanation:

assume that you have 3 different side lengths.   apply the pythagorean theorem here:   square each of the two shortest sides; call them a and b, so that their squares are a² and b².   also square the longest side, calling the result c².

now, if a² + b² = c² is true, the triangle is a right triangle; otherwise it is not a right triangle.