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
Dvinal [7]
3 years ago
15

PLZ HELP ASAP SOLID GEOMETRY WORD PROBLEMS

Mathematics
1 answer:
yan [13]3 years ago
8 0
The volume of the candle initially is:
V=Ab*h
Area of the base of the cylinder: Ab=pi*r^2
pi=3.14
Radius of the base: r=4 cm
Height of the cylinder: h=6 cm

Ab=pi*r^2
Ab=3.14*(4 cm)^2
Ab=3.14*(16 cm^2)
Ab=50.24 cm^2

V=Ab*h
V=(50.24 cm^2)*(6 cm)
V=301.44 cm^3

The candle melts at a constant rate of:
r=(60 cm^3)/(2 hours)=(120 cm^3)/(4 hours)=(180 cm^3)/(6 hours)
r=30 cm^3/hour

The amount of candle melted off after 7 hours is:
A=(30 cm^3/hour)*(7 hours)
A=210 cm^3

The percent of candle that is melted off after 7 hours is:
P=(A/V)*100%
P=[(210 cm^3)/(301.44 cm^3)]*100%
P=(0.696656051)*100%
P=69.66560510%
Rounded to the nearest percent
P=70%

Answer: 70%

You might be interested in
Sue had $100.00 in her wallet. She spent 23% of that money on notebooks and folders how much money did she spent?
ruslelena [56]

Answer: 23$

Step-by-step explanation: 100*.23=23$

7 0
3 years ago
Read 2 more answers
Jackie has a square wall that she covered using 130.5 square feet of fabric without any overlap . Whic measurement is closest to
dem82 [27]

Answer:

32.625

Step-by-step explanation:

a square has all equal side so u divieded the amount of she used by 4

5 0
3 years ago
I need help with number 16 i need the answer by 8:45 please. Thank you
Nadusha1986 [10]
Type o ( ii)        =   6 . 25 

Type A ( l^A l ^A    or l ^A i )    = 18 . 75 

Type B   ( l ^b l^b  or l ^ bi )   = 18.75

Type AB ( l ^ A l^ B)    = 56.25 

3 0
3 years ago
Solve the system of equations y = x + 5 and y = 5x - 11 using a graphical method.
tresset_1 [31]

You can use substitution for this.

x+5 = 5x -11

Combine like terms

16=4x

Divide 4 on both sides to isolate the x

x=4

Plug x=4 to one of the equations

y= 4 +5

Combine like terms

y=9

So the answer is A. (4,9)

I hope this helps you out a bunch hun :)

4 0
3 years ago
I've been trying to get an answer for this all day and don't know where to begin what is the answer like I have no clue ​
Shtirlitz [24]

so, we have two 54x18 rectangles, so their perimeter is simply all those units added together, 54+54+54+54+18+18+18+18 = 288.

we know the circle's diameter is 1.5 times the width, well, the width is 18, so the diameter of the circle must be 1.5*18 = 27.

\bf \stackrel{\textit{circumference of a circle}}{C=d\pi }~~ \begin{cases} d=diameter\\[-0.5em] \hrulefill\\ d=27 \end{cases}\implies C=27\pi \implies C=\stackrel{\pi =3.14}{84.78} \\\\[-0.35em] ~\dotfill\\\\ \stackrel{\textit{perimeter of the rectangles}}{288}~~~~+~~~~\stackrel{\textit{perimeter of the circle}}{84.78}~~~~=~~~~372.78

6 0
3 years ago
Other questions:
  • Select the function that represents a geometric sequence.
    11·2 answers
  • C=5/9(F-32) convert 12°C to Fahrenheit​
    10·1 answer
  • Given that ∫61f(x)dx=1,∫63f(x)dx=6 and ∫71f(x)dx=7 find ∫73f(x)dx.
    8·1 answer
  • Verify that the points are the vertices of a parallelogram and find its area. (2,-1,1), (5, 1,4), (0,1,1), (3,3,4)
    9·1 answer
  • Given two points how would you create a linear equation?
    7·1 answer
  • Choose the single logarithmic expression that is equivalent to the one shown.
    11·2 answers
  • Find the difference of 24.7 and 20.5​
    7·2 answers
  • .
    13·1 answer
  • Whats y'alls answer streak, mine is 10. Highest gets brainiest! (not how many questions you have answered.
    12·2 answers
  • A number tripled and tripled again is 576. What is the number?
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!