What is the difference in height between 30 m down a cliff and 87 m up a cliff? Use the first number given in problem to write the number sentence. Choose the correct number sentence and answer that matches this situation. A. 30 - 87 = -57 B. -30- (-87) =57 C. 30 - (-87) = 117 D. -30 - 87 = -117

what do you need me to answer?

step-by-step explanation:

35-60 students are taking math.

system of linear equation

step-by-step explanation:

as given in the data

a= 20 , b= -12

let us suppose that it is a straight line equation

now we know the formula for the system of linear equation

b= ma + c )

here m is slope of a straight line which is equal to formula

m=   (ii)

and here c is a constant

now putting the value of a and b in equation (ii)

m=

m=

putting the value of a,b and m in equation (i) gives us

-12 = + c

-12=-12 + c

adding 12 to both sides

-12 +12 = -12 +12 +c

0 =c

or c=0

as the value of the constant is zero which gives us that it is a linear equation and this order pair satisfies the system of linear equations.

okey so the slope is -3/5 and the y -intercept is 7/5

hope this if needed hmu