Answer:
Step-by-step explanation:
2 and 1/4 + 2 and 1/5 + 3 and 5/8
Answer:
327 children and 318 adults
Step-by-step explanation:
The x be the amount of children and y be the amount of adults that were at the swimming pool. We can use this to set up a system of equations:
x+y=645
1.75x+2.50y=1367.25
Move y to the other side in the first equation to isolate x and solve the system using substitution:
x=645-y
1.75(645-y)+2.50y=1367.25
Distribute
1128.75-1.75y+2.50y=1367.25
1128.75+0.75y=1367.25
Subtract 1128.75 from both sides
0.75y=238.5
Divide both sides by 0.75
y=318
x=645-y
x=645-318
x=327
327 children and 318 adults swam at the pool that day
Answer:
A = 4 units²
Explanation:
S(-5, -8), T(-3, -6), U(-6, -5)
Area of triangle given coordinates:
= 1/2 [x₁(y₂ - y₃) + x₂(y₃ - y₁) + x₃(y₁ - y₂)]
= 1/2 [-5(-6 - (-5)) + -3(-5 - (-8)) + -6(-8 - (-6))]
= 1/2 [5 - 9 + 12]
= 1/2 [ 8 ]
= 4
Answer:
<em>Survival of the Fittest</em>
- There has been gradual evolution of life forms with new forms arising at different periods of history. Any population has built-in variations in characteristics which adapt it better to environment.
- The characteristics which enable some population or individuals to survive better in natural conditions (climate, food, physical factors) would out-breed others (Survival of the fittest).
- Adaptability is inherited and fitness is the end result of ability to adapt and get selected by nature.
