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
meriva
3 years ago
10

A cube has a volume of 2197 m^3. Its surface is to be painted. Each can of paint covers about 40 m^2. How many cans of paint are

needed? Justify your answer.
Mathematics
1 answer:
Gelneren [198K]3 years ago
8 0
<em>Volume= a³</em>
<em>a=edge</em>
<em>2197 = a³</em>
<em>=> a=13 m</em>
<em>Surface area=6a²=6*13²=6*169=1014 m²</em>
<em>\frac{1014}{40} = 25,35 ≈ 26</em>
<em>=> <u>26 cans needed</u></em>
You might be interested in
luke has $1.40 in quarters and nickels. he has 2 more quarters than nickels. how many coins of each type does he have?
Ainat [17]

Answer:

3 nickels and 5 quarters

Step-by-step explanation:

Let n = number of nickels

q = number of quarters

q = n+2

.25q + .05n = 1.40

Using the first equation and replacing q in the second equation

.25( n+2) + .05n = 1.40

Distribute

.25n+.50 +.05n = 1.40

Combine like terms

.30n +.5 = 1.40

Subtract .5 from each side

.3n +.5-.5 = 1.40-.4

.3n = .9

Divide by .3

.3n/.3 = .9/.3

n = 3

q = n+2

q=5

8 0
3 years ago
Read 2 more answers
A number greater than -5
Serggg [28]

Answer:

Hi there!

Your answers are:

1) x> 5

Some numbers that would fit this equation are 6, 7, 8, etc!

2) x<= 30

Some numbers that would fit this are 30, 29, 28, etc!

3) x>= 17

Some numbers that would fit this equation are 17, 18, 19, etc!

4) x>= 90

Some numbers that would fit this are 90, 91, 92, etc!

Hope this helps!

5 0
3 years ago
125. Albert surveyed a class of 25 students on sports. 5 kids love baseball. 7 kids love basketball. 10 kids
MAXImum [283]

Answer:

3 students

Step-by-step explanation:

since the<em> </em>total number of students is 25,when you add those that like baseball, basketball and football the total number must be 25 but in this case it's 22 meaning 2 student liked neither.

7+5+10+x=25

x=25-22

=3

I hope this helps

4 0
3 years ago
What is the mean of this data: 23, 37, 11, 58, 13, 45
nata0808 [166]

Step-by-step explanation:

Mean= Sumof all the numbers/ number of data

So,

23+37+11+58+13+45=187

Now...

187/6=31.166666667 Answer

hope it helps....

8 0
3 years ago
Read 2 more answers
$2,275 is deposited into an account that earns 4% simple interest for 5 years. What is the amount of extra money earned over thi
Cerrena [4.2K]

Answer:

455

Step-by-step explanation:

455×10²

P:$2,275

R:4%

T:5

P:$2,275

subtitle:R: 4%into formula

T:5

5×2275×0.04

5×(2275×0.04)

5×91

answer:455

5 0
2 years ago
Read 2 more answers
Other questions:
  • If triangle ABC is dilated by a scale factor of 2.5 with a center of dilation at vertex B, how does the area of A'B'C' compare w
    13·2 answers
  • Complete the pattern 444
    14·1 answer
  • How to wok out this problem 6(3-5)+7(4+2)=
    6·2 answers
  • Solve the equation <br> -x^2+50=25
    9·2 answers
  • PLEASE HELP Consider these dimensions for a cylindrical aquarium.
    11·2 answers
  • What is x + 3 = 10??
    14·2 answers
  • What is the most reasonable estimate for the measure of the angle
    15·2 answers
  • Please help, I can not figure out any of these questions.
    8·1 answer
  • A committee must be formed with 5 teachers and 4 students. If there are 6 teachers to choose from, and 15 students, how many dif
    6·1 answer
  • Which ordered pair is a solution to the equation y=3x-10​
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!