1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Debora [2.8K]
2 years ago
12

Mass = 100g, volume = 20cm^3, what is the density?

Mathematics
1 answer:
adoni [48]2 years ago
4 0

Step-by-step explanation:

density= mass / volume

= <u> </u><u> </u><u>100g</u><u> </u>

20cm^3

= 50g/cm^3

You might be interested in
HELP ME!!!!! I really need the answer to this!!!!!!!
larisa86 [58]

Answer:

12x^8y^8

Step-by-step explanation:

taking numbers in one side and multiplying and taking the variables in other sides and adding the power

5 0
2 years ago
Read 2 more answers
Find the geometric mean between the pair of numbers 9 and 36
Degger [83]

Answer:18

Step-by-step explanation:

9/x = x/36

x^2 = 324

x=18

5 0
2 years ago
Solve this problem on paper using all four steps. A girl scout troop sold cookies. If the girls sold 5 more boxes the second wee
Varvara68 [4.7K]
This is a problem where you should make an equation.
Let's say x is the first week. It would mean
First Week : x
Second Week : x + 5
Third Week : 2(x+5)
You need to add these up to make your equation. Your equation will look something like this :
x+x+5+2(x+5) = 431
Now you simplify.
2x+5+2x+10 = 431
4x+15 = 431
4x = 416
x = 104
That means they sold 104 Boxes in the First Week.
104+5=109
So they sold 109 Boxes the Second Week.
109 x 2 = 218
And they sold 218 Boxes the Third Week.

I hope I was useful!
3 0
3 years ago
Read 2 more answers
a taxi service charges an initial fee of $5 plus $1.80 per mile. How many miles can you travel for $12
user100 [1]
First you need to write an equation or an inequality.

5+1.80x<=12 
the x here is how many miles you are paying for, now you just solve for x. 

5+1.80x<=12
-5                 -5

1.80x<=7
/1.80         /1.80
x<=3.8

you can travel only three whole miles, you do not have enough money to go four full miles.
4 0
3 years ago
1. A student took 60 minutes to answer a combination of 20 multiple-choice and extended-response questions. She took 2 minutes t
Darina [25.2K]

Answer:

1) m=15 and r =5

2) 4 and 2 ml

3) x= 0.5 and y = -1

Step-by-step explanation:

given that m multiple choice questions and r extended response questions.

Also given that a) m+r = total no of questions =20 ... i and

                        2m+6r = total time taken = 60  ... ii

b) Divide second equation by 2, m+3r = 30  ... iii

                                                  m+r  = 20   ... i

Subtract to get 2r =10 or r =5

m = 20-5 = 15

Verify: m+r = 15+5 =20

and     2m+6r = 30+30 = 60 minutes.  

Hence verified

--------------------------------------

2) Let a litres of 20% solution and b litres of 50% solution be mixed

a) Then total volume = 6 ml = a+b  ... i

Resulting solution = 30% of 6 ml = 1.8 = 0.2a+0.5b ... ii

b) Solve i and ii

b = 6-a: substitute in ii.

0.2a + 3-0.5a = 1.8

Or a = 4 ml and b = 2ml

Verify: Total volume = a+b =6ml and

concentration = 0.2(4)+0.5(2) = 1.8 = 30% of 6 ml.

Thus verified

---------------------------------

3) 2x-3y=4 ...i

  2x-5y =6... ii

Because x term has the same coefficient in both the equations, elimination is easier.

i-ii gives 2y =-2 or y =-1

Substitute in i, 2x+3 =4 or x = 0.5

So answer is x = 0.5 and y =1


6 0
2 years ago
Other questions:
  • A triangle with sides 7.5, 10, and 12.5 is a right triangle.
    12·1 answer
  • Select the equivalent expression
    6·1 answer
  • NEED HELP!!! WILL GIVE BRAINLIEST FOR EXPLAINING ANSWERS.
    15·1 answer
  • Adele is 5 years older than Timothy. In three years, Timothy will be of Adele’s age. What is Adele’s current age?
    5·1 answer
  • Kevin's car can go 315 miles on one tank of gas he used just under 40% of a full tank of gas to get to a sporting event travelin
    11·2 answers
  • to make 2 batches of nut bars jayda needs to use 4 eggs how many eggs are used in each batch of nut bars 1/2 eggs per batch 2 eg
    7·1 answer
  • Pleaseee help <br><br> 6(3 - 7x) = -192
    15·2 answers
  • Patrick made a cake for his mother's birthday. He started making the
    8·1 answer
  • A linear function forms a line. true or false​
    6·1 answer
  • Write 4 1/7 as an improper fraction?
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!