Vinh needs 420 points to have a b average in math. his scores so far are 88, 89, 79, and 77. what is the minimum score he can make on the next test to maintain the b?

Vinh must get 87 in the next test to maintain grade B.

Step-by-step explanation:

Vinh needs 420 points to have a B average in math.

His scores so far are 88, 89, 79, and 77.

Addition of these scores is =

Therefore, the minimum score he can make on the next test to maintain the grade B is :

Hence, Vinh must get 87 in the next test to maintain grade B.

let's solve your equation step-by-step.

4x+2=2x+12

step 1: subtract 2x from both sides.

4x+2−2x=2x+12−2x

2x+2=12

step 2: subtract 2 from both sides.

2x+2−2=12−2

2x=10

step 3: divide both sides by 2.

2x

2

=

10

2

x=5

step-by-step explanation:

we would need a picture of the quadrilateral in order to answer the question. also, it seems that the question is missing some components.