Answer:
75.4 inches
Step-by-step explanation:
circumference = 2πr = 24π ≅ 75.4 inches
It's really more of a tubcake than a cupcake.
Answer:
You'll need 2.8 gallons of the 80% solution.
Step-by-step explanation:
Let the volume of 30% alcohol =x gallons
Then the volume of 80% alcohol =(14-x) gallons
Since we want to obtain a 40% alcohol solution, we have:
0.3x+0.8(14-x)=0.4(14)
0.3x+11.2-0.8x=5.6
0.8x-0.3x=11.2-5.6
0.5x=5.6
x=11.2
Therefore, the volume of 80% alcohol
=14-11.2
=2.8 gallons
You'll need 2.8 gallons of the 80% solution.
Let x the age of John
Amy's age = x + 9
from question, we get,
John's age + Amy's age = 23
x+(x+9)= 23
=> x + x + 9 = 23
=> 2x = 23 - 9
=> x = 14/2
=> x = 7
Answer:
19.7ft
Step-by-step explanation:
Este problema é resolvido usando o teorema de Pitágoras (a2 + b2 = c2). Nesta fórmula, a e b são as pernas do triângulo retângulo, enquanto c é a hipotenusa.
Usando as etiquetas do nosso triângulo, temos:
o2 + a2 = h2
\ dpi {100} h ^ {2} = (10ft) ^ {2} + (17ft) ^ {2}
h2 = 100ft2 + 289ft2
h = 389ft2 −−−−− √
→ 19,7 pés
