Answer:
4 cm²
Step-by-step explanation:
Area = ½.bh
b = base (cm²)
h = perpendicular height, i.e. BD (cm²)
1) 1.2756 x 10^4
2) 1.16464 x 10^5
3) 1.42984 x 10^5
4) 1.392 x 10^6
5) 5.977 x 10^7
6) 9.035 x 10^8
7) 2.6448 x 10^9
Answer:
101 degrees
Step-by-step explanation:
the sum of all angles in a triangle is always 180 degrees.
the other not-shaded angle in the lower triangle is also 42 degrees.
the shaded angle is therefore
180 - 37 - 42 = 101 degrees
Use f and m for "female" and "male." Then f = m + 16, and f + m = d (total)
So now we have the system of linear equations
f = m + 16
f + m = d
We can eliminate f by subst. m + 16 for f in the second equation:
d-16
m + 16 + m = d, or 2m + 16 = d. Find m. 2m = d - 16, so that m = --------
2
Assuming that the male horses are either brown or black, and that 25% of these are brown, then the rest must be black. This number is
d-16
0.75 [ --------- ] .
2