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3 years ago

What is the density of water?

2 answers:

8 0

1 g/cm3Water has its maximum density of 1g/cm3 at 4 degrees Celsius. When the temperature changes from either greater or less than 4 degrees, the density will become less then 1 g/cm3. Water has the maximum density of 1 g/cm3 only when it is pure water.

user100 [1]3 years ago

6 0

It has a density of 997 kg/m³

You might be interested in

A lock has 3 digits and can have any number from 0-9 how many combinations are there

tatiyna

Ten choices for the first digit, 10 for the second, 10 for the third,

10 × 10 × 10 = 1000 combinations

Answer: 1000

8 0

3 years ago

X Which of the following equations is correct?

Tanya [424]

Answer:

Option A is correct

Step-by-step explanation:

Given:

There are four option is given.

We need to find correct option.

Now we check the given option.

Option A.

$10^{5}\times 2.4 = 240,000$

Now we simplify the left side of the equation.

Simplify $10^{5} = 10\times 10\times 10\times 10\times 10 = 100,000$

And 2.4 replaced by $\frac{24}{10}$

$100,000\times \frac{24}{10} = 240,000$

$\frac{100,000\times 24}{10} = 240,000$

$\frac{2400000}{10} = 240,000$

$240,000 = 240,000$

So the value of left side of the equation is equal to the value of right side of the equation.

Therefore, option A is correct

4 0

3 years ago

Suppose that the members of a student governance committee will be selected from the 40 members of the student senate. There are

Len [333]

Answer:

The total number of ways to form a student governance committee is 1,211,760.

Step-by-step explanation:

The students senate consists of a total of 40 students.

The students are either Sophomores or Juniors or Seniors.

The number of students in each of these categories are as follows:

Sophomores = 18

Juniors = 12

Seniors = 10

A governance committee have to be selected from the students senate.

The committee have to made up of 2 sophomores, 2 juniors and 3 seniors.

Combinations can be used to select 2 sophomores from 18, 2 juniors from 12 and 3 seniors from 10.

Combinations is a mathematical technique used to determine the number of ways to select k items from n distinct items.

The formula is:

${n\choose k}=\frac{n!}{k!(n-k)!}$

(1)

Compute the number of ways to select 2 sophomores from 18 as follows:

${n\choose k}=\frac{n!}{k!(n-k)!}$

${18\choose 2}=\frac{18!}{2!(18-2)!}=\frac{18\times 17\times 16!}{2\times 16!}=153$

Thus, there are 153 ways to select 2 sophomores from 18.

(2)

Compute the number of ways to select 2 juniors from 12 as follows:

${n\choose k}=\frac{n!}{k!(n-k)!}$

${12\choose 2}=\frac{12!}{2!(12-2)!}=\frac{12\times 11\times 10!}{2\times 10!}=66$

Thus, there are 66 ways to select 2 juniors from 12.

(3)

Compute the number of ways to select 3 seniors from 10 as follows:

${n\choose k}=\frac{n!}{k!(n-k)!}$

${10\choose 3}=\frac{10!}{3!(10-3)!}=\frac{10\times 9\times 8\times 7!}{2\times 3\times 7!}=120$

Thus, there are 120 ways to select 3 seniors from 10.

The total number of ways to form a student governance committee that must have 2 sophomores, 2 juniors and 3 seniors is:

Total number of ways = ${18\choose 2}\times {12\choose 2}\times {10\choose 3}$

$=153\times 66\times 120\\=1211760$

Thus, the total number of ways to form a student governance committee is 1,211,760.

7 0

3 years ago

Simplify (5a2bc3) abc4

Tatiana [17]

$(5a^{2}bc^{3}) abc^{4}=5*(a^{2}*a)*(b*b)*(c^{3}*c^{4})=5*a^{3}*b^{2}*c^{7}\\\\
5a^{3}b^{2}c^{7}\ is\ your\ answer.$

5 0

3 years ago

1/2^-2 2^-3 -4^5 What is the value of for x = 2 and y=-4?

Vinil7 [7]

value of x=2 is-8 and y=-4 is -1024

6 0

3 years ago