38: it's a right triangle
39:
area:
circumference:
Answer:
please pretty please mark brainlist
Step-by-step explanation:
number of plants = 647
number of plants in 1 rows = 20
number of rows =
647 ÷ 20 = 32 and remainder = 7 =>
647 = 32 × 20 + 7 =>
647/20 =
(32 × 20 + 7) / 20 =
32 + 7/20 =
32 7/20
"six less" = -6
"twice the value of x" = x*2= 2x
2x-6
the discriminant formula is b^2-4ac
so plug the values from each equation into the formula and solve, the result is the value of the discriminant
if the number is negative, there are no real roots/x-int
if it is 0 there is one real root/x-intercepts
if it is positive it has 2 real roots/x-int
and to find the actual solutions you have to plug the values into the quadratic formula
