Find the illegal values of b in the fraction 2b^2+3b-10/b^2-2b-8
a. b = -5 and 2
b. b = -2 and 4
c. b = -2 and -4
d. b = -5, -2, 2, and 4

The correct option is B

Step-by-step explanation:    

we have to find the illegal values of b in the fraction

The values of b that makes the denominator 0 which are illegal values of b in the fraction

solve factor

By middle term splitting method

b=4 and -2

The correct option is B

answer: c.  

step-by-step explanation:

mixtures containing substances that get attracted to magnet can be separated using a magnet. we can separate iron from a mixture of sand and iron, as only iron attracts to the magnet.

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.