Scored a 45% on a grade but I have a 81 grade what would by grade be now

a

step-by-step explanation:

care to share were the trapezoid shown is ?

d. 145*2 is 290 than the total angle is 360 then minus 290 then divide by two

if y=4x then you will substitute 4x in for y in the second equation.

8x + 4x = 18 combine like terms

12x = 18 divide by 12 on both sides

x = 18/12 or 3/2

now replace x in the first equation with 3/2 to get

y = 4 3/2

y = 6

the answer is a

(3/2,6)

hope that .

brainliest is always apprectiated