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
kenny6666 [7]
3 years ago
12

O E. $68.00

Mathematics
2 answers:
vovangra [49]3 years ago
7 0
The answer to your question is E
PilotLPTM [1.2K]3 years ago
7 0
Answer is E 2 hours and 26 min
You might be interested in
A pyramid has a square base of length 8cm and a total surface area of 144cm². Find the volume of the pyramid. (Please use Pythag
Sveta_85 [38]

Answer:

\displaystyle V_{ \text{pyramid}}= 64 \:  {cm}^{3}

Step-by-step explanation:

we are given surface area and the length of the square base

we want to figure out the Volume

to do so

we need to figure out slant length first

recall the formula of surface area

\displaystyle A_{\text{surface}}=B+\dfrac{1}{2}\times P \times s

where B stands for Base area

and P for Base Parimeter

so

\sf\displaystyle \: 144=(8 \times 8)+\dfrac{1}{2}\times (8 \times 4) \times s

now we need our algebraic skills to figure out s

simplify parentheses:

\sf\displaystyle \: 64+\dfrac{1}{2}\times32\times s = 144

reduce fraction:

\sf\displaystyle \: 64+\dfrac{1}{ \cancel{ \: 2}}\times \cancel{32}  \: ^{16} \times s = 144 \\ 64 + 16 \times s = 144

simplify multiplication:

\displaystyle \: 16s + 64 = 144

cancel 64 from both sides;

\displaystyle \: 16s = 80

divide both sides by 16:

\displaystyle \: \therefore \: s = 5

now we'll use Pythagoras theorem to figure out height

according to the theorem

\displaystyle \:  {h}^{2}  +  (\frac{l}{2} {)}^{2}  =  {s}^{2}

substitute the value of l and s:

\displaystyle \:  {h}^{2}  +  (\frac{8}{2} {)}^{2}  =  {5}^{2}

simplify parentheses:

\displaystyle \:  {h}^{2}  +  (4 {)}^{2}  =  {5}^{2}

simplify squares:

\displaystyle \:  {h}^{2}  +  16  =  25

cancel 16 from both sides:

\displaystyle \:  {h}^{2}   =  9

square root both sides:

\displaystyle \:   \therefore \: {h}^{}   =  3

recall the formula of a square pyramid

\displaystyle V_{pyramid}=\dfrac{1}{3}\times A\times h

where A stands for Base area (l²)

substitute the value of h and l:

\sf\displaystyle V_{ \text{pyramid}}=\dfrac{1}{3}\times  \{8 \times 8 \}\times 3

simplify multiplication:

\sf\displaystyle V_{ \text{pyramid}}=\dfrac{1}{3}\times  64\times 3

reduce fraction:

\sf\displaystyle V_{ \text{pyramid}}=\dfrac{1}{ \cancel{ 3 \: }}\times  64\times \cancel{ \:  3}

hence,

\sf\displaystyle V_{ \text{pyramid}}= 64 \:  {cm}^{3}

8 0
3 years ago
"!I NEED HELP WITH MY MATH PROBLEMS, PLEASE!" (27 POINTS)
Len [333]
25. yes it's direct variation
26. yes

5 0
3 years ago
Read 2 more answers
Which expression is equivalent to (x'2-2)'5​
Greeley [361]

Answer: D = x'10 − 10x'8 + 40x'6 − 80x'4 + 80x'2 − 32

Step-by-step explanation:

3 0
3 years ago
What is the meaning of meters
horsena [70]

Answer:

the fundamental unit of length in the metric system, equal to 100 centimeters or approximately 39.37 inches.

5 0
4 years ago
Helppppp! What is the value of 5^3i^9
Irina-Kira [14]

Answer:

125i.

Step-by-step explanation:

5^3 is 125 i^2 is -1 so i^8 is positive and you have 1 i left.

5 0
3 years ago
Other questions:
  • If one third of a gallon covers one eight of a wall , how much paint is needed to cover the entire wall A: 8 2:3 / B: 8 1/3 / C:
    7·1 answer
  • Fill in the bubble next to all the doubles facts you could use to find the sum of 3+2? () 1+1
    7·1 answer
  • In your own words, describe how to graph the linear equation y = -1/5x + 3. Step by step
    8·1 answer
  • How to make a square root spiral​
    12·1 answer
  • A square is cut in half on the diagonal, creating two equal triangles. each triangle has an area of 0.32 square units. what is t
    14·2 answers
  • If p=7,q=5,r=3 find value of p2+q2-r2<br>​
    13·2 answers
  • WILL MARK AS BRAINLIEST Write a complete Spanish sentence to indicate what the following people
    14·1 answer
  • Sylvia asked a random sample of students whether they prefer eating vegetables or fruits as a snack, and whether they prefer to
    5·2 answers
  • Cuanto es en total de 6000x1
    13·1 answer
  • Pleaseeeeeee help me this is a test for geometry, please read carefully before answering.
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!