What is the sum of 4x² + 2x - 5 and 722 -- 5x + 2?
1122 - 32 - 3
1122 - 32 + 3
1122 + 30 - 3
1102 + 3x +3
I would be guessing

Sum of 4x² + 2x – 5 and 7x² – 5x + 2 is 11x² – 3x – 3.

Solution:

Given expression:

4x² + 2x – 5 and 7x² – 5x + 2

To find the sum of these expressions.

Sum of 4x² + 2x – 5 and 7x² – 5x + 2

                    = (4x² + 2x – 5) + (7x² – 5x + 2)

                    = 4x² + 2x – 5 + 7x² – 5x + 2

Arrange the terms with same power together.

                    = 4x² + 7x² + 2x – 5x – 5 + 2

                    = 11x² – 3x – 3

Sum of 4x² + 2x – 5 and 7x² – 5x + 2 is 11x² – 3x – 3.

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.

ome people is not even worth it to even try it in the air.

step-by-step explanation: