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
Vilka [71]
2 years ago
14

Please help with this

Mathematics
1 answer:
lana66690 [7]2 years ago
4 0
Alright, let's convert to decimals for these calculations: fractions could get messy.
1/5 = .2
1/2 = .5

Imagine a rectangular solid in your mind. How many sides does it have?
6. In the image shown you have 3 facing you. In addition to those, there are 3 not shown. They will correspond to the calculations you make on the front, though, so all you have to do is double the values you get.

Area is length * width, or length * height, or width * height. So:
A = 3.2 (length) * 4.5 (height) for the front face of the rectangular solid(as well as the back face.)
A = 5 (width) * 4.5 (height) for the right face of the rectangular solid (and the one on the left, away from you.)
A = 3.2 (length) * 5 (width) for the top of the solid(and the bottom).

Calculating these values, we get that 
A=14.4
A=22.5
A= 16
So that's 3 out of 6 values for the full surface area.
Like I said though, these values can merely be doubled for the complete area.
Add these three together:
14.4+22.5+16=52.9
multiply by 2 to account for the other 3 sides
52.9 * 2 = 105.8
105.8 is the surface area.
You might be interested in
Which term describes the set of all possible output values for a function?
Firdavs [7]

The <em><u>correct answer</u></em> is:

C. Range

Explanation:

The definition of domain is the set of all possible input values, or x-values, of a function.

The definition of range is the set of all possible output values, or y-values, of a function.

3 0
3 years ago
Read 2 more answers
Devon invests $9,000 in a savings account that pays 1.5% simple interest. How much will be in the account after 6 years if Devon
MAVERICK [17]
$810 because if you use the simple interest formula (s=p*r*t), you get $810 hope this helped!
4 0
3 years ago
In which situation is the distance traveled proportional to time? A car moving in stop-and-go traffic A person biking on a trail
Sindrei [870]
For this case, what you must do is to see in which scenario the speed of keeping constant during a certain time.
 "A person biking on a trail at 1212 miles per hour for 2020 minutes"
 We observe that the distance in this case is proportional to the time and the constant of proportionality is the speed.
 In other words:
 d = v * t
 Answer:
 the distance traveled is proportional to time in:
 "A person biking on a trail at 1212 miles per hour for 2020 minutes"
5 0
3 years ago
You have D dollars to buy fence to enclose a rectangular plot of land (see figure at right). The fence for the top and bottom co
alex41 [277]

The perimeter of the rectangular plot of land is given by the expression below

P=2x+2y

On the other hand, since the available money to buy fence is D dollars,

\begin{gathered} D=4(2x)+3(2y) \\ \Rightarrow D=8x+6y \\ D\rightarrow\text{ constant} \end{gathered}

Furthermore, the area of the enclosed land is given by

A=xy

Solving the second equation for x,

\begin{gathered} D=8x+6y \\ \Rightarrow x=\frac{D-6y}{8} \end{gathered}

Substituting into the equation for the area,

\begin{gathered} A=(\frac{D-6y}{8})y \\ \Rightarrow A=\frac{D}{8}y-\frac{3}{4}y^2 \end{gathered}

To find the maximum possible area, solve A'(y)=0, as shown below

\begin{gathered} A^{\prime}(y)=0 \\ \Rightarrow\frac{D}{8}-\frac{3}{2}y=0 \\ \Rightarrow\frac{3}{2}y=\frac{D}{8} \\ \Rightarrow y=\frac{D}{12} \end{gathered}

Therefore, the corresponding value of x is

\begin{gathered} y=\frac{D}{12} \\ \Rightarrow x=\frac{D-6(\frac{D}{12})}{8}=\frac{D-\frac{D}{2}}{8}=\frac{D}{16} \end{gathered}<h2>Thus, the dimensions of the fence that maximize the area are x=D/16 and y=D/12.</h2><h2>As for the used money,</h2>\begin{gathered} top,bottom:\frac{8D}{16}=\frac{D}{2} \\ Sides:\frac{6D}{12}=\frac{D}{2} \end{gathered}<h2>Half the money was used for the top and the bottom, while the other half was used for the sides.</h2>

7 0
10 months ago
45% of what number is 9?<br> Your answer
larisa [96]
The answer is 5
45/9=5
4 0
2 years ago
Read 2 more answers
Other questions:
  • Whats the diffrence of 2 2/3 - 1 2/5 write answer in simplest form
    10·2 answers
  • The number of letters in Stephanie's full name is sixteen less than twice the number of letters in Amy's full name. If the numbe
    6·1 answer
  • You roll a fair 6 sided die. what is p (roll less than 4)
    10·1 answer
  • Perimeter of triangle? <br>need some help please!​
    12·1 answer
  • Jake is skipping stones onto a pond. Each time he flings a stone in, he counts
    10·2 answers
  • Insert parentheses in expression 2 so that it has a value of 4. Then show why your expression has a value of 4.
    9·1 answer
  • Use the given information to find the minimum sample size required to estimate an unknown population mean mu. How many students
    11·1 answer
  • (d <br> 2<br> +6d+9)+(d <br> 3<br> +6d+9)
    10·2 answers
  • PLEASE, NO LINKS OR FILES. If the diameter of a cylinder is 6 yards, then the value of r 2 is 9 square yards. True False
    8·2 answers
  • Please help fast, thank you! I only have 20 minutes! I always appreciate your help!
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!