Answer:
m = 3(-n+2) / 5
Step-by-step explanation:
10m + 6n = 12
-6n -6n
----------------------
10m = 12 - 6n
/10 /10
-----------------------
m = 3(-n+2) / 5
Step-by-step explanation:
if I understand you correctly, then the 3 sides are
a = 20 m
b = 34 m
c = 42 m
under this assumption the best is to use Heron's Formula to get the area :
s = (a + b + c)/2
area = sqrt(s(s - a)(s - b)(s - c))
in our case
s = (20 + 34 + 42)/2 = 96/2 = 48
area = sqrt(48(48-20)(48-34)(48-42)) =
= sqrt(48×28×14×6) = sqrt(112,896) =
= 336 m²
Answer:
81
Step-by-step explanation:

Using PEMDAS/BODMAS, we will have to do the exponent first, which is
.
Substitute the variable z with 6, since z = 6.

.
Thus, we will get

Solve the multiplication next.

Finally, add/subtract the numbers:

