Mixed nuts sell for $7.89 a pound. Leticia fills a bag and weighs it. The bag weighs 2.3 pounds.

Mathematics

1 answer:

Maurinko [17]3 years ago

8 0

Answer:

i think the answer is 18.15

Step-by-step explanation:

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A spherical block of ice melts so that its surface area decreases at a constant rate: ds/dt = - 8 pi cm^2/s. calculate how fast

sveticcg [70]

The rate a which the surface area, S, decreases is
$\frac{dS}{dt} =-8 \pi \, cm^{2}/s$

The surface area is
S = 4πr²
where r = the radius at time t.

Therefore
$\frac{dS}{dt} = \frac{dS}{dr} \frac{dr}{dt} =8 \pi r \frac{dr}{dt} \\\\ -8 \pi = 8 \pi r \frac{dr}{dt} \\\\ \frac{dr}{dt} =- \frac{1}{r}$

When r = 3 cm, obtain
$\frac{dr}{dt}]_{r=3} = - \frac{1}{3} \, cm/s$

Answer: -1/3 cm/s (or -0.333 cm/s)

5 0

3 years ago

What is the smallest 6 digit palindrome that is divisible by 99

Scorpion4ik [409]

Answer:

108801

Step-by-step explanation:

6-digit palindrome is the number n the form of:

xyzzyx

This is divisible by 11 by default as the sum of the digits in odd placed is same as sum of the number in even places (remember the divisibility rule by 11):