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
Igoryamba
3 years ago
15

The mass of 4.5 cm3 of iron and 8 cm3 of copper is equal to 101.5g. The mass of 3 cm3 of iron is 6.8g greater than the mass of 2

cm3 of copper. Find the density of iron and the density of copper.
Mathematics
1 answer:
tangare [24]3 years ago
5 0
Let m be the density of iron
Let M be the density of copper
So, m = M = 101.5 grams

We know that the formula for mass is:
m = d x v
where:
m is mass
d is density
v is volume

the density of iron is calculated by d = m / v, we derived this formula from the mass formula.
So d = 6.8g/ 3.3cm^3 = 2.26 g/cm^3

It was said that the density of iron is more than the density of copper, so 6.8 should be greater than 2xd, it indicates that d is less than 3.4.

Therefore, the density of copper is more likely less than 3.4g/cm^3
You might be interested in
a pentagon is a regular pentagon that has 5 sides, so each side has the same length that is (x - 1.5)cm. The perimeter is 22.5 c
Ivanshal [37]

Answer:

Step-by-step explanation:

5(x - 1.5) = 22.5

5x - 7.5 = 22.5

5x = 15

x = 3

8 0
3 years ago
ILL MARK BRAINLY!!
Finger [1]

Answer:

D

Step-by-step explanation:

When you put something in parenthesis by a number, your multiplying each individual number by the number outside of parenthesis. Therefore, 5(2) = 10 and 5(7) = 35 and that equals 45, and 5(2+7) you distribute the 5 to both numbers and get 10+35 which equals 45 aswell.

7 0
3 years ago
Read 2 more answers
Factor y 2 + 10z - 10y - yz. 1. (z - y)(y - 10) 2. (y - z)(y - 10) 3. (y - z)(10 - y)
Iteru [2.4K]

Answer:

y²+10z-10y-yz

Reaaranging the terms

=y²-yz+10z-10y

taking common

=y(y-z)+10(y-z)

=(y+10)(y-z) is the right option

i hop this will help you :)

5 0
3 years ago
On average, college graduates spend more money on the lottery than those with only a high school education. True or false?
Anettt [7]
True. College graduates often spend more money on lottery tickets than those with only a high school education, hoping to win big to pay off student loans. Hope this helps!
5 0
3 years ago
Read 2 more answers
Solve h(x) = 5 - 9x Find h(8)
Alex_Xolod [135]

h(x) = 5 - 9x

h(8) = 5 - 9×8 ( putting value x = 8)

h(8) = 5 - 72

h(8) = -67

Answer is -67.

4 0
3 years ago
Read 2 more answers
Other questions:
  • Can a Equilateral rectangle be a square
    8·2 answers
  • Question 13-14.<br> Thanks
    14·1 answer
  • What is:<br><br> 8-3x=128 <br><br> Please solve this :)
    6·2 answers
  • A line has a slope of 2 and a y-intercept of -9, what is the equation of the line?
    12·1 answer
  • Which expression can be used to determine the total weight of b baseballs that weight 5.25 ounces each and s softballs that weig
    6·2 answers
  • In a recent year, the ACT scores for the math portion of the test were normally distributed, with a mean of 21.1 and a standard
    8·1 answer
  • PPPPPPPPPPPPPPPPLLEASE HELP I GOT LIKE 1 MIN!!!!!
    14·1 answer
  • Syyshshdhehqvswwpwurxwittau
    9·1 answer
  • Please help me with this math problem!! :)
    7·1 answer
  • ok i have a chart that i have to right the line of best fit for and I don't know how to do that please help
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!