Answer:
837.23 cm³
Step-by-step explanation:
La fórmula para el volumen de un prisma pentagonal se da como:
1/2 (5 s × a) × h
Dónde:
s = longitud lateral
a = Apotema
h = altura
De la pregunta anterior:
s = largo de lado = 6.1 cm
a = Apotema = 4.5 cm
h = Altura = 12.5 cm
Por lo tanto:
El volumen del prisma pentagonal =
1/2 (5 × 6.1 × 4.5) × 12.5
= 1/2 × 137.25 × 12.5
= 837.225 cm³
Aproximadamente = 837.23 cm³
Four times the sum of a number and 15 is at least 120
Let ‘x’ represent the number.
"The sum of a number and 15"
This can be written mathematically as x + 15
Given that 4 times this sum is at least 120,
This means that 4 times the sum is greater than or equal to 120
This can be written mathematically as 4(x + 15) >= 120
Solving for x
4(x + 15) >= 120
4x + 60 >= 120
4x >= 120 – 60
4x >= 60
x >= 60/4
x >= 15
x is greater than or equal to 15
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Answer:
7 1/8
Step-by-step explanation:
Convert the mixed fractions to normal fractions:
(9 * 4) + 2 = 38
(1 * 3) + 1 = 4
38/4 ÷ 4/3
Reduce it down as much as possible:
19/4 ÷ 4/3
Apply the fractions formula for division:
a / b ÷ c / d = a * d / b * c
19 * 3 / 2 * 4
57 / 8
Simplify:
7 1/8
Answer:
47 stamps.
Step-by-step explanation:
If Leah bought 19 snowflake stamps, 24 truck stamps (19 + 5 = 24), and 4 rose stamps (24 - 20 = 4), the answer would come out to 47 stamps in total.
Equation: 19 + 24 + 4 = 47
