A scale model of a ramp is a right triangular prism as given in this figure. In the actual ramp, the triangular base has a height of 1.2 feet.

What is the surface area of the actual ramp, including the underside?

Enter your answer as a decimal in the box.

A Scale Model Of A Ramp Is A Right Triangular Prism As Given In This Figure. In The Actual Ramp, The

Answers

Answer 1

Answer:

16.8

Step-by-step explanation:

Answer 2

The scale factor is a ratio. The surface area of the real ramp is 16.80 ft².

What is the scale factor?

The ratio between comparable measurements of an item and a representation of that thing is known as a scale factor in arithmetic.

As we know that the height of the real ramp is 1.2 feet, while the height of the drawing is 6 cm, therefore, the scale factor can be written as,

[tex]\rm Scale\ factor = \dfrac{\text{Area of Image}}{\text{Area of pre-image}}=\dfrac{1.2 \ feet}{6\ cm} = 0.2[/tex]

Now, the area of the pre-image can be written as,

[tex]\rm \text{Area of pre-image} = 2triangles+ 2 rectangle + 1 rectangle\ at\ base[/tex]

                             [tex]= 2(0.5 \times 6 \times 16) + 2(10 \times 9) + (16 \times 9)\\\\= 2(48)+2(90)+144\\\\= 96 + 180 + 144\\\\ = 420\ cm^2[/tex]

Further, the area of the actual ramp can be written as,

[tex]{\text{Area of pre-image}} \times \rm Scale\ factor = \text{Area of Image}\\\\ \text{Area of Image}= 420 \times (0.2)^2 \\\\ \text{Area of Image}= 16.8\ ft^2[/tex]

Hence, the surface area of the real ramp is 16.80 ft².

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Related Questions

Sketch the graph:
just tell me the vertex and the points I should plot on

Answers

Answer:

SO this equation is y={4-3x}

This is an absolute value so the domain is all real numbers

For this equation, we are shifting left 3 and up 4

The vertex is (1,1) Turning point

Points:
(-1,7)

(0,4)

(1,1)

(2,2)

(3,5)

(4,8)

It will make a v shape

(if u were too do this on the ti-84, hit y=, then hit 2nd catalog and hit abs, plug in the equation; then hit 2nd graph to get the table. You will need to find the vertex by finding the number at which they are not the same)

I hope this helps!

Step-by-step explanation:

Which expression is equivalent to 5/6−1/4+(−2/3)

Answers

Answer:

the last one

Step-by-step explanation:

The graph of f (z) -x^2 was translated 4.5 units to the left to create the graph of function g.
which function represents g?

Answers

If the function is translated 4.5 units to the left to createe the graph of function g(x), hence the resuting function will be g(x) = (x + 4.5)^2

Translation of coordinates

Given the function expressed as
f(x) = x^2

If the function is translated 4.5 units to the left to createe the graph of function g(x), hence the resuting function will be:

g(x) = (x + 4.5)^2

Note that translation to the left means addition of the factor

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Subtract: (4x5 + 8x5 + 3x) from (3x2 + 6x2 + 9x)

Answers

Answer:

[tex]12x^5-9x^2-6x[/tex]

Step-by-step explanation:

[tex]\left(4x^5+8x^5+3x\right)-\left(3x^2+6x^2+9x\right)[/tex]

[tex]4x^5+8x^5+3x-\left(3x^2+6x^2+9x\right)[/tex]

[tex](4x^5+8x^5):12x^5[/tex] ( Combine like terms)

[tex]12x^5+3x-\left(3x^2+6x^2+9x\right)[/tex] (Apply the distributive law)

[tex]12x^5+3x-9x^2-9x[/tex]

[tex](3x-9x):-6x[/tex]  ( Combine like terms)

[tex]12x^5-9x^2-6x[/tex]

~

Answer:

[tex]\sf 9x^2 - 12x^5 +6x[/tex]

solving steps:

[tex]\hookrightarrow \sf (3x^2 + 6x^2 + 9x )- (4x^5 + 8x^5 + 3x)[/tex]

remove parenthesis

[tex]\hookrightarrow \sf 3x^2 + 6x^2 + 9x - 4x^5 - 8x^5 - 3x[/tex]

group variables

[tex]\hookrightarrow \sf 3x^2 + 6x^2 - 4x^5 - 8x^5 - 3x+ 9x[/tex]

simplify

[tex]\hookrightarrow \sf 9x^2 - 12x^5 +6x[/tex]

Nora is flying a kite, holding her hands a distance of 3 feet above the ground and
letting all the kite's string play out. She measures the angle of elevation from her
hand to the kite to be 23. If the string from the kite to her hand is 135 feet long, how
many feet is the kite above the ground? Round your answer to the nearest tenth of a
foot if necessary.

Answers

Answer:

[tex]55.7 feet[/tex]

Step-by-step explanation:

[tex]h=\sin{\left(23\right)\times135}[/tex]

[tex]\sin{23}\approx0.39[/tex]

[tex]h=0.39\times135=52.65\left(feet\right)\[/tex]

[tex]H=h+3[/tex]

[tex]=52.65+3[/tex]

[tex]=55.65\left(feet\right)[/tex]

[tex]55.65\ feet\approx55.7\ feet[/tex]

I hope this helps you

:)

.48 divided 9.28 round to the nearest tenth

Answers

Answer=5.2

You get a long decimal (5.17241379) but to the nearest tenth it’s 5.2
It would be 10 as 48 divided by 9.28 is 5.1724 and if you round that to the nearest 10th it would be 10!!

please help me asap i will give you 50 points

Answers

Answer:

Keep track of every 1, 2, 3, or 4. These represent the number of days the temperature is above 80 degrees F. repeat this 20 times.

is y=10x^2 a linear equation

Answers

No, it is an exponential equation. It has an exponent.

Which shapes have 4 sides and 4 vertices?

Answers

Answer:

A quadrilateral has 4 sides, 4 angles and 4 vertices.

how many diagonals does an 80-gon have?

Answers

Answer:

Step-by-step explanation:

35

Answer:

3080

Step-by-step explanation:

Select the correct answer.
What is the inverse matrix that can be used to solve this system of equations?
x-y-z=4
-x+2y+3z=-2
x+y+4x=10

Answers

The correct answer is the inverse matrix: [ 1 -3 2]

                                                                      [ 2 -5 3]

                                                                      [-1 3 -2]

                                                                     

To find the inverse matrix that can be used to solve the given system of equations, we need to represent the system in matrix form as AX = B, where A is the coefficient matrix, X is the column matrix of variables, and B is the column matrix of constants.

The given system of equations can be written as:

[1 -1 -1] [x] [ 4]

[-1 2 3] * [y] = [-2]

[ 1 1 4] [z] [10]

To find the inverse matrix, we'll set up the augmented matrix [A | I], where I represents the identity matrix:

[1 -1 -1 | 1 0 0]

[-1 2 3 | 0 1 0]

[1 1 4 | 0 0 1]

Using Gaussian elimination, we'll perform row operations to transform the left side into the identity matrix, while applying the same operations to the right side. The resulting matrix on the right side will be the inverse matrix.

After performing the row operations, the augmented matrix becomes:

[1 0 0 | 1 -3 2]

[0 1 0 | 2 -5 3]

[0 0 1 | -1 3 -2]

Therefore, the inverse matrix is:

[ 1 -3 2]

[ 2 -5 3]

[-1 3 -2]

Hence, the correct answer is the inverse matrix:

[ 1 -3 2]

[ 2 -5 3]

[-1 3 -2]

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In a class of c children,1/4 are boys. What fraction are girls?

Answers

Answer : 3/4 of the children in the class are girls

Answer:

3/4

Step-by-step explanation:

Given:

⇒ 1/4 are boys

To Solve/Find:

⇒ What fraction are girls

Solve:

well, We know that 4/4 = 1 Whole

Thus, We have to Subtract to find what fraction are girls

→ 4/4 - 1/4 = 3/4          

Hence, We can conclude that 3/4 are girls

~Learn with Lenvy~

Bella and Justin went to the bank to open new checking accounts. The equation C=0.1n+1.50 represents the monthly cost, C, in dollars, where n is the number of checks written by Bella. In Justin’s account, the monthly cost is proportional to the number of checks written. The monthly cost for Justin’s account is $1.20 for writing 3 checks. How many checks must Bella and Justin write, if any, so that the cost of the accounts is the same for one month? What is the cost, if any?



If Bella and Justin write
checks, it will cost them both $
for one month.

Answers

The cost would be the same for Justin and Bella if 500 checks are sold, costing about $200.

What is an equation?

An equation is an expression that shows the relationship between two or more variables and numbers.

Given the equation for Bella:

c = 0.1n + 150

Where C is the monthly cost for n checks.

For Justin:

1.2 = 3k

k = 0.4

C = 0.4n

To have the same cost:

0.1n + 150 = 0.4n

n = 500

c = 0.4(500) = 200

The cost would be the same for Justin and Bella if 500 checks are sold, costing about $200.

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SOMEONE PLSS HELP WITH MY ZEARN ITS 5TH GRADE MATH BTW! can be decimal or mixed number!!

Answers

Answer:

[tex]64 \frac{1 3}{21} ft {}^{2} [/tex]

Step-by-step explanation:

Area of the garden:

[tex](8 \frac{3}{7} \times 7 \frac{2}{3} )ft {}^{2} \\ \\ ( \frac{59}{7} \times \frac{23}{ 3} )ft {}^{2} \\ \\ = \frac{1357}{21} ft {}^{2} \\ \\ = 64 \frac{13}{21} ft {}^{2} \: (ans)[/tex]

the width of the garden is 8 3/7 and the length is 7 2/3.

to find the area you multiply the length by the width.

so 8 3/7 * 7 2/3

you just multiply both. so you get 64 13/21 or 64.619

HELPPPPP I WILL GIVE BRAINLIEST TO THE CORRECT ANSWER (see attachment)

Answers

Step-by-step explanation:

(b) since a negative number added to a positive one it will be positive

Answer:

2x² + 5x - 12

steps:

→ (x+4)(2x-3)

By distributive method:

→ (x)(2x) +4(2x) +x(-3) +4(-3)

simplifying:

→ 2x² + 8x - 3x - 12

final answer:

→ 2x² + 5x - 12

what is the expanded form of 648.297? ​

Answers

Answer:

600 + 40 + 8 + .2 + .09 + .007 = 648.297

an oil spill spreads 25 square meters every 1/6 hour. How much area does the oil spill cover after 2 hours?

Answers

Answer:

300 [tex]m^{2}[/tex]

Step-by-step explanation:

The spread has a rate of 25 [tex]m^{2}[/tex] per every 1/6 hour.  That can be expressed as   25 [tex]m^{2}[/tex] per every 1/6 hour:

25 [tex]m^{2}[/tex]/ (1/6 hour), or

150 [tex]m^{2}[/tex]/hour

After 2 hours, the spread would be (150 [tex]m^{2}[/tex]/hour)*(2 hours) = 300 [tex]m^{2}[/tex]

Solve for x to the nearest tenth.

Answers

Answer: the answer to your question is 8.0

Step-by-step explanation:

Sin theta = opposite /hypotenuse sin 53 = x/10

Multiply each side by 10

10 sin 53 = x

7.9863551

To the nearest tenth

x = 8.0

Which of the following
represents this inequality?
|3x – 4| < 6x

Answers

Answer:

x>

4

9

Step-by-step explanation:

|3x−4|<6x

Let's find the critical points of the inequality.

|3x−4|=6x

We know either3x−4=6xor3x−4=−6x

3x−4=6x(Possibility 1)

3x−4−6x=6x−6x(Subtract 6x from both sides)

−3x−4=0

−3x−4+4=0+4(Add 4 to both sides)

−3x=4

−3x

−3

=

4

−3

(Divide both sides by -3)

x=

−4

3

3x−4=−6x(Possibility 2)

3x−4+6x=−6x+6x(Add 6x to both sides)

9x−4=0

9x−4+4=0+4(Add 4 to both sides)

9x=4

9x

9

=

4

9

(Divide both sides by 9)

x=

4

9

Check possible critical points.

x=

−4

3

(Doesn't work in original equation)

x=

4

9

(Works in original equation)

Critical points:

x=

4

9

Check intervals in between critical points. (Test values in the intervals to see if they work.)

x<

4

9

(Doesn't work in original inequality)

x>

4

9

(Works in original inequality)

Answer:

x>

4

9

Which type of local wind is shown below and what causes this type of wind?



Question 23 options:

At night, cooler air over land replaces rising warmer air over water causing a land breeze.


At night cooler air over water replaces rising warmer air over land causing a land breeze.


During the day, cooler air over land forces warmer air over water to rise causing a sea breeze.

Answers

Answer:

A

Step-by-step explanation:

because me smart

The perimeter of a square is 1/7 yard. Find the length of each side in feet.

1 yd=3 feet


*MY LITTLE SISTER NEEDS HELP*

Answers

a square has four equal sides, and we know the perimeter or namely the sum of all those four sides is 1/7 yard, so

s = length of one side.

[tex]s + s + s + s = \cfrac{1}{7}\implies 4s=\cfrac{1}{7}\implies s=\cfrac{~~ \frac{1}{7}~~}{4}\implies s=\cfrac{~~ \frac{1}{7}~~}{\frac{4}{1}} \\\\\\ s=\cfrac{1}{7}\cdot \cfrac{1}{4}\implies s=\cfrac{1}{28}~yd\qquad \stackrel{\textit{how many feet is that?}}{s = \cfrac{1~yd}{28}\cdot \cfrac{3~ft}{yd}}\implies s=\cfrac{3}{28}~ft[/tex]

Kristen is paid $8.25 per hour. how much would her paycheck be for 39 hours? show your work.

Answers

Answer:

$321.71

Step-by-step explanation:

To do this problem, we have to multiply 8.25 by 39 because Kristen gets paid $8.25 per hour, and she worked for 39 hours. Here is my work below:

[tex]8.25 X 39=321.71[/tex]

So, Kristen gets paid $321.71 for working 39 hours.

Hope this helps! :)

Have a blessed day! :)

PLEASE MARK ME AS BRAINLIEST I REALLY WANT TO LEVEL UP

Which line is a line of symmetry for the figure below?


A.
Line A
B.
Line C
C.
Line B
D.
Line D

Answers

Answer:A

Step-by-step explanation:

Because as you look around we notice line A. We can see that when we look at it there is symmetric. The line divide both of the parts equal

Daina gives 2/3 of his money to Carol. Carol gives 6/7 of this money to Zak.
What fraction of Daina's money does Zak get?

Answers

Answer: I think he gets 1/2 of something

Step-by-step explanation:

How do i solve this.

Answers

Let us set up some variables:

L: LengthW: Width

Now let us set up some equations based on the facts:

length of rectangle is 4 times its width --> L = 4Wperimeter of rectangle is 80 --> 2L + 2W = 80

Equations:

   L = 4W     -- equation 1

   2L + 2W = 80 -- equation 2

   Plug the value of L from equation 1 into equation 2

    2(4W) + 2W = 80

     8W + 2W = 80

        10W = 80

           W = 8 -- equation 3

   

   Plug the value of W from equation 3 into equation 1:

    L = 4W = 4 * 8 = 32

Therefore the length is 32 and the width is 8.

Hope that helps!

     

   

HELP PLEASE HELP HELP
f(x) = 1 / x + 2 - 4

(-1.5 , ___)
(-1 , ___)
0, ___)
(-3, ___)
(-2.5, ___)
(-4 , ___)​

Answers

I think it’s 0but not s

One week, Daniel earned $554. 30 at his job when he worked for 23 hours. If he is paid the same hourly wage, how many hours would he have to work the next week to earn $939. 90?

Answers

Answer:39 hours

Step-by-step explanation:First, let's find the rate of money per hour:$554.30 / 23 hour= $24.1 / 1 hourDaniel earns $24.10 every hour he works.To find the hours that Daniel has to work to earn $939.90, divide it by 24.10:$939.90 / 24.10= 39Now, we can check:$24.10 * 39= $939.90

please help me,

Find the value of x that will make A parallel to B

the answer isn't 1, I've tried that

Answers

Which expression is equivalent to 4012Vr12 : 10-2/29[8 ifx+0
OA
4,2/29
O
30=2/29
or
OD
413/29
452/29

Kate has 7 apples and she eats 5 how many does she have left

Answers

7-5=2

Kate has 2 apples left.

Which of the following are among the basic postulates of Euclidean Geometry?
A) Any straight line segment can be extended indefinitely.
B) All right triangles are equal.
C) A straight line segment can be drawn between any two points.
D) All right angles are equal.

Answers

The answer would be C

Any straight line segment can be extended indefinitely and straight line segment can be drawn between any two points can apply. Therefore, options A and D are the correct answers.

What is Euclidean geometry?

"Euclidean geometry is the study of plane and solid figures on the basis of axioms and theorems employed by the Greek mathematician Euclid"

As per the five basic postulates of Euclidean geometry

A straight line can be drawn from any point to another point.

A terminated line can be further produced indefinitely.

A circle can be drawn with any Centre and any radius.

All right angles are equal to one another.

If two lines are drawn which intersect a third in such a way that the sum of the inner angles on one side is less than two right angles , then the two lines inevitably must intersect each other on that side if extended far enough.

Therefore, options A and D are the correct answers.

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