Let l = 22.5 cm, b = 10 cm and h = 7.5 cm
Surface area of each brick
= 2(lb + bh + lh)
= 2(22.5 × 10 + 10 ×7.5 + 7.5 × 22.5 cm²
= 2 (225 + 75 + 168.75) cm²
= 2(468.75) cm² = 937.5 cm²
Area that can be painted using the paint of container = 9.375 m² = 9.375 × 100 × 100 cm²
Number of bricks that can be painted
Hence, 100 bricks can be painted out of the paint given in the container.
Answer:
In order: 7.5, 7.5061, 7.56, 9.213
Step-by-step explanation:
Cookies: $13.40 divided by 2.5 = $5.36
Crackers: $24.75 divided by 4.5 = $5.50
Therefore, Cookies are less.
Doubling time
A=final amount
P=initial amount
n=number of days
d=number of days to double
so
given initial is 40 ants
doubling time is 10 days
and days we want is 20 then
A=160
the population is 160
Answer:
P= (3x-1)+(x+2)+(3x^2-11x)+(x^2-3x)
= 4x^2-10x+1