To prepare for a math test eric study three times as long as kendra and 1/2 as long as geraldo. how long did geraldo study if kendra studied for 20 minutes?

Let

x> time in minutes used by Eric to study

y> time in minutes used by Kendra to study

z> time in minutes used by Geraldo to study

we know that

x=3y> equation 1

x=0.5z

z=2x> equation 2

y=20 minutes > equation 3

substitute equation 3 in equation 1

x=3*20=60 minutes

find the value of z in equation 2

z=2*60=120 minutes

therefore

the answer is

The time in minutes used by Geraldo to study was 120 minutes

step-by-step explanation:

i think something is missing in your question because y-1=(x-12) would not pass through the point (-4,-3). because if you replace x by -4 your are supposed to find y=-3 which is not the case her. if you replace x by -4 you find =-15.

i assume the right equation is y-1=1/4*(x-12) because this one is passing through both your points (if you are interested to know how i found that out i can tell you).

in this equation if i replace x by -4 i find y=-3 and if i replace x by 12, i find y=1 so the line representing this equation is passing through those 2 points.

then the standard form of the equation is finding an expression of y in function of x

y-1=1/4*(x-12)

y=x/4-3+1

y=x/4-2

hope that .

do you confirm there was a mistake in the question?

the aswere is the one with all 8's and the second one is with the 10,8 and 6

step-by-step explanation: