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2 years ago

Evaluate the following expression when k=8. Enter your answer as a fraction in the form a/b.

Mathematics

1 answer:

Allushta [10]2 years ago

5 0

9514 1404 393

Answer:

512/5

Step-by-step explanation:

Put the number where the variable is and do the arithmetic

k^3/5 = 8^3/5 = 512/5

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2 years ago

Rewrite each equation to solve for m.

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Answer:

1. M = 7-5n

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2 years ago

About 70,000 people live in a 6-mile radius of a city's town hall. Find the population density in people per square mile. Round

nika2105 [10]

Answer:

The population density is 618.93 per square mile.

Step-by-step explanation:

It is given that,

No. of people, N = 70,000

The radius of a city's town hall, r = 6 miles

We need to find the population density. It can be calculated by the formula i.e. number of people divided by area of land such that,

$P=\dfrac{N}{A}\\\\P=\dfrac{N}{\pi r^2}\\\\P=\dfrac{70000}{\pi (6)^2}\\\\P=618.93\ \text{per square mile}$

So, the population density is 618.93 per square mile.

7 0

2 years ago

Find the value of the variable if P is between J & K. A) JP = 8z - 17 B) PK = 5z + 37 C) JK = 17z - 4

Daniel [21]

We cannot deduce about the exact location of P between J and K. But we can conclude: segment JP + segment PK = line JK.
JP + PK = JK.
Substitute first each.
(8z - 17) + (5z + 37) = 17z - 4
Combine like terms.
13z + 20 = 17z - 4
Isolate the variable z.
4z = 24
z = 6
The value of the variable z is then 6 units.

3 0

2 years ago

Read 2 more answers