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DedPeter [7]
2 years ago
6

1. Calculate the density of a substance with a mass of 5.788 g in a volume of 4.22 mL

Mathematics
1 answer:
Alenkinab [10]2 years ago
8 0

Answer:

1.37g/ml

Step-by-step explanation:

What is density?

Density (ρ) is simply the mass (m) per given volume (V) of a substance

The formula is therefore:

ρ = m/V

Just as speed is distance covered per a given period of time;

We have a mass and we have a volume, all we need to do is plug into the formula:

ρ = 5.788/(4.22)

ρ = 1.37156398104 → 1.37 (rounded to 3 significant figures)

Finding the units is easy, the mass is in g and the volume is in ml and the mass is divided by volume so the units are: g/ml

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Suppose that a certain college class contains students. Of these, are juniors, are mathematics majors, and are neither. A studen
ipn [44]

Answer:

<h2>2/5</h2>

Step-by-step explanation:

The question is not correctly outlined, here is the correct question

<em>"Suppose that a certain college class contains 35 students. of these, 17 are juniors, 20 are mathematics majors, and 12 are neither. a student is selected at random from the class. (a) what is the probability that the student is both a junior and a mathematics majors?"</em>

Given data

Total students in class= 35 students

Suppose M is the set of juniors and N is the set of mathematics majors. There are 35 students in all, but 12 of them don't belong to either set, so

|M ∪ N|= 35-12= 23

|M∩N|=  |M|+N- |MUN|= 17+20-23

           =37-23=14

So the probability that a random student is both a junior and social science major is

=P(M∩N)= 14/35

=2/5

7 0
2 years ago
Negative solution for Multi-step equations
nydimaria [60]

Answer:

\frac{1}{2}(4x+6)+3x=7x+9

\frac{1}{2}(4x+8)+3x=7x+9

Step-by-step explanation:

By putting the numbers in the given equation,

\frac{1}{2}(4x+6)+3x=7x+9

2x + 3 + 3x = 7x + 9

5x + 3 = 7x + 9

(5x + 3) - 7x = (7x + 9) - 7x

(5x - 7x) + 3 = 9

-2x + 3 = 9

(-2x + 3) - 3 = 9 - 3

-2x = 6

-\frac{2x}{2}=\frac{6}{2}

-x = 3

x = -3

Therefore, our equation is correct which has a negative result.

In place of 6 if we use 8, value of x will be negative again.

3 0
3 years ago
Can someone help me solve this equation 5-x=12
RSB [31]
In order to solve you get x by itself:
5-x=12
-5     -5
-x=7
divide by negative 1
7 0
2 years ago
A flower box is 3 ft. Long, 2 3/4 ft. Wide, and 1/2 ft. Deep. How many cubic feet of dirt can it hold? A. 4 1/8 B. 5 3/4 C. 6 1/
pochemuha

Answer:

The box can hold 4 1/8 cubic feet of dirt

Step-by-step explanation:

What we simply have to find here is the volume of dirt it can take

To get this, we have to multiply the dimensions of the box

We have this as follows

Volume or box = length * width * height

Volume of box = 2 3/4 * 1/2 * 3

Volume of box = 11/4 * 3 * 1/2 = 33/8 = 4 1/8 cubic feet

5 0
3 years ago
Pls help ASAP I DONT have time
Paul [167]

Answer:

B: y = 3x + 6

5 0
2 years ago
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