30. In February, Calvin's school used 4,920 pounds of rock salt to melt ice on its sidewalks. One bag contains 40 pounds of rock salt. Choose Yes or No to tell which of the following equations can be used to find how many bags of rock salt, b, Calvin's school used in February 30a. 4,920b = 40 0 Yes Ο Νο 30b. 40b = 4,920 30c. 4,920 + 40 = b 0 Yes Ο Νο 30d. 4,920 = b = 40 0 Yes Ο Νο O Yes Ο Νο​

-8/2y-8=5/y+4-7y+8/y^2-16

we move all terms to the left:

-8/2y-8-(5/y+4-7y+8/y^2-16)=0

we can not solve this equation

the answer is 1030 it's very simple math.

18 units²

step-by-step explanation:

first let's find altitude bd using the distance formula

d = √((y₂ - y₁)² + (x₂ - x₁)²)

bd = √((0 - -3)² + (0 - 3)²)

bd = √18

given the placement of points a and c, we can denote that point d bisects segment ac.

we will call ac the base.

using the distance formula

ac = √((0 - 6)² + (-6 - 0)²)

ac = √72

knowing our base and our height, we can plug these into our triangle area formula

area = (b * h)/2

area = (√18 * √72) / 2

area = (√1296) / 2

area = 36 / 2

area = 18 units²

the equation is going to be