The following formula is used to determine semester grades: 0.5F+0.5S=T. F is the first marking period grade and S is the second marking period grade. T is the total semester grade. Rewrite the formula in terms of the second quarter grade, S.

38.5

step-by-step explanation:

lets say, first number = r

second number = 3r+7

total = 49

(r)+(3r+7)= 49

4r+7 = 49

4r = 42

r = 42/4

r= 10.5

3r+7 = 3(10.5)+7 = 38.5

hope this

29.5977692753

step-by-step explanation:

for this case we have by definition, if two lines are perpendicular, then the product of their slopes is -1.

then, given the following line:

so,

we are looking for m_ {2}:

then, the line is given by:

we find "b" replacing the given point:

finally, the equation is:

option c

b

step-by-step explanation: