How do you find the surface area of "most" 3D solids?

Answers

Answer 1

Answer:

Surface area is the sum of the areas of all faces (or surfaces) on a 3D shape. A cuboid has 6 rectangular faces. To find the surface area of a cuboid, add the areas of all 6 faces. We can also label the length (l), width (w), and height (h) of the prism and use the formula, SA=2lw+2lh+2hw, to find the surface area.

Step-by-step explanation:

I hope this helps!


Related Questions

Tell whether the sequence is arithmetic. If it is, identify the common difference.
11,20,29,38,...

A. arithmetic sequence;-9
B. arithmetic sequence;9
C. arithmetic sequence;11
D. not an arithmetic sequence

Answers

Answer:

Your answer is Option B.arithmetic sequence;9

Pls mark as brainliest!

Here are the endpoints of the segments AB, CD, and EF.
A(7,4), B (2,8)
C(5,0), D (1, -5)
E (-3,5), F (-8, 1)

Answers

Answer:

this is not a question

Step-by-step explanation:

HISTORY Refer to the stem-and-leaf plot below.

Answers

Part (a)

Count the number of individual digits in the leaf category only.

For the first row, we have 3 leaves representing 3 different ages between 20 and 29. Specifically those ages are 26, 26, 29. Repeat ages are possible.

The second row has 17 leaves in it

So far we have 3+17 = 20 people accounted for.

Keep this process going until you get every row.

You should find that in total there are 56 leaves in all to represent the 56 signers of the declaration of independence.

To verify the answer, you can look it up on any history website dealing with this point in time.

Answer: 56

=======================================================

Part (b)

The youngest age is 26 because it corresponds to the smallest stem (2) and the smallest leaf (6)

Answer: 26

=======================================================

Part (c)

The oldest person on the other hand was 70 since we look at the largest stem (7) and the largest leaf of that stem. There's only one leaf here so we don't have to worry about the second aspect.

Subtract the oldest and youngest ages to get the range.

range = max - min = 70 - 26 = 44

There's a 44 year gap between the oldest and youngest person.

Answer: 44

=======================================================

Part (d)

No, the majority weren't between 30 and 39. Instead, the majority of the signers were between 40 and 49 since we have the most leaves in the stem corresponding to "4".

ASAP HELP RN
Ashley is diving in the ocean. She wants to reach a coral reef that is 60 feet below sea level; that is, the reef’s elevation is -60 feet. She decides to safely descend to the reef from the ocean’s surface in increments of 10 feet. Answer the following questions to learn more about Ashley’s rate of descent

Part B
Write a numerical expression that represents the number of increments it will take Ashley to reach -60 feet.

Part C
Is the number of increments in part B positive or negative?

Part D
Rewrite the expression from part B by distributing -1 from each of the negative numbers.

Part E
If you divide any number by itself, what is the result? How can you apply this result to the expression in part D?

Part F
Based on your work so far, how many increments of -10 feet are in -60 feet?

Part G
Copy and paste this image into the space below the correct number of times to show an elevation of -60 feet.

Part H
Suppose that Ashley’s brother, Alex, makes the same dive in 4 increments instead of 6 Write a numerical expression to represent Alex’s elevation change in feet per increment.

Part I
How many negative numbers are in the expression in part H? What will the sign of the solution be? How do you know?

Part J
What was Alex’s elevation change in feet per increment?

Answers

Answer:

Part B: is -60 divided by -10

Part C: is The number of increments is positive.

Part D: is -1 times 60 / -1 times 10

Part E: is Any number divided by itself is 1. In the expression  -1 times 60, the -1s in the numerator and the denominator cancel each other out to give the result 60/10, or 6

Part F: is There are 6 increments of -10 feet in -60 feet.

Part G is: copy and paste -10 feet 6 times

Part H: is -60 / 4 increments

Part I: is there is one negative number in the expression, so the solution will be negative. There isn't a -1 in the denominator to cancel out the -1 in the numerator.

Part J: is -60 /4 =-15     Alex’s elevation change in each increment was -15 feet.

Step-by-Step Explaination: I did the test.

Answer:

A:-10 or -10 feet

B:-60/-10 or -60 feet/-10 feet

C: The number of increments is positive.

D: -1 X 60/ -1 X 10 or -1 X 60 feet/ -1 X 10 feet

E: Any number divided by itself is 1. In the expression -1 X 60, the -1s in the numerator and the denominator cancel each other out to give the result 60/10, or 6.

F: There are 6 increments of -10 feet in -60 feet

G: copy and paste 6X

H:-60 feet / 4 increments

I: There is one negative number in the expression, so the solution will be negative. There isn't a -1 in the denominator to cancel out the -1 in the numerator.

J:-60/4 = -15 Alex's elevation change in each increment was -15 feet

Hope this helps

HELP ME PLEASEEE ASAP

A diagonal brace strengthens the wire fence and prevents it from sagging.
The brace makes a 50 degree angle with the wire as shown. Find the value
of the variable.

Answers

Answer:

y° = 130°

Step-by-step explanation:

The angel adjacent to y° corresponds with the given measure of degree that the brace makes with the wire.

Thus, the measure of the angle adjacent to y° = 50° (Corresponding angles are congruent)

y° and the angle adjacent to y° form a linear pair on a straight line.

Therefore:

y° + 50° = 180° (linear pair)

subtract 50 from each side

y° + 50° - 50° = 180° - 50°

y° = 130°

A box contains six red popsicles, two blue popsicles, and eight orange
popsicles. If a popsicle is drawn at random, what is the probability that it is
not blue?

Answers

Answer:

7/8

Step-by-step explanation:

add all the popsicles together and subtract the number of blue from the total and put that number over the total and simplify

total popsicles = 14

blue = 2

not blue = 12

12/14 × 100 = 85.71

Final answer = 85.71

A. Find the sum.

Pls help me​

Answers

Answer:

1. is 1

2. is 0.722222222222

3. is 0.56666666666

4. is 0.791666666666

5. is 1.25

PLEASE HELP IN ALGEBRA
Explain how natural logarithm is applied in real life. Please make sure to give at least two examples

Answers

Sound, earthquakes, the brightness of stars, and chemistry, such as pH balance, a measure of acidity and alkalinity, are all instances of this.

The sales tax rate is 10%. If Liam buys a wheelbarrow priced at $94, what will be the total cost including tax?​

Answers

Answer:

$9,4

Step-by-step explanation:

Multiply the number by 10 over 100

Hey there!

=> [tex]\fbox{94 × 10/100}[/tex]

=> [tex]\fbox{ 940/100}[/tex]

=> [tex]\fbox{9.4}[/tex]

[tex] We \:add\: 9.4\: to\: 94[/tex]

=> [tex]\fbox{94 + 9.4}[/tex]

=> [tex]\fbox{103.4}[/tex]

Therefore, total cost is 103.4

barbara has $80 in a savings account that earns 5% interest per year. The interest is not compounded. How much will she have in total in 1 year?​

Answers

Answer:

4$

Step-by-step explanation:

I = P*r*t

Interest = 80*0.05*1 = 0.8*5 = $4.00

A park has 2 flagpoles 20m apart. One pole is 12m high and the other is 27m high. Calculate the angle of depression from the top of the taller pole to the top of the shorter pole. Round off your answer to the nearest hundredth.

PS. Please put an illustration/drawing of the problem. Thank you!

Answers

Answer:

37°

Step-by-step explanation:

Here it is given that there are two flagpoles which are 20 m apart. One of them is 12m high and the other is 27m high .And we are interested in finding the angle of depression from the top of taller pole to the top of shorter pole .

For illustration, refer to the attachment or below ,

Illustration :-

[tex]\setlength{\unitlength}{1cm}\begin{picture}(0,0)\thicklines\put(0,0){\line(0,1){6}}\put(0,0){\line(1,0){4}}\put(4,0){\line(0,1){4}}\multiput(0,4)(0.6,0){7}{\qbezier(0,0)(0,0)(0.5,0)}\qbezier(0,6)(0,6)(4,4)\put(0,6){\vector(1,0){3}}\qbezier(0.8,6)(1,5.8)(0.6,5.7)\put(1,5.6){$\theta$}\qbezier(3.2,4.42)(3,4.1)(3.25,4)\put(2.4,4.15){$\theta$}\put(-0.5,-0.5){A}\put(-0.5,6){E}\put(-0.5,3.8){D}\put(-0.8,5){15m}\put(4.3,-0.5){B}\put(-1.2,2){$ 27m $}\put(3.2,6){$ F $}\put(4.5,2){$ 12m $}\put(4.3,3.8){C}\put(-1,1.8){\vector(0,-1){1.8}}\put(-1,2.4){\vector(0,1){3.7}}\put(2,-0.5){$ 20m$}\put(2,3.5){$ 20m$}\end{picture} [/tex]

Here the angle of depression will be ,

[tex]\longrightarrow\sf \angle_{of \ depression}=\angle FEC [/tex]

Also ,

[tex]\sf\longrightarrow \angle FEC =\angle ECD \ (alternate \ interior \ angles)[/tex]

Let ,

[tex]\sf\longrightarrow \angle FEC =\angle ECD = \theta \ ( say ) [/tex]

Now in ∆ EDC , we have;

[tex]\sf\longrightarrow tan\theta =\dfrac{perpendicular}{base}\\ [/tex]

[tex]\sf\longrightarrow tan\theta =\dfrac{15m}{20m}\\[/tex]

[tex]\sf\longrightarrow tan\theta =\dfrac{3}{4}\\ [/tex]

[tex]\sf\longrightarrow \theta =tan^{-1}\bigg\lgroup \dfrac{3}{4}\bigg\rgroup\\ [/tex]

[tex]\sf\longrightarrow \underline{\boxed{\textsf{\textbf{$\boldsymbol{\theta}$= 37$^{\bf o }$ }}}} [/tex]

And we are done!

Answer:

θ = 37°

Step-by-step explanation:

In the figure,

Distance between the poles = DC = 20 m

Height of the smaller pole = ED = 12 m

Height of the larger pole = AC = 27 m

Now, by using the properties of a rectangle,

DC = EB = 20 m

ED = BC = 12 m

Then,

AB

= AC - BC

= 27 - 12

= 15 m

We know that,

tan (θ) = opposite side / base side

Then, in △ ABE,

(Here, θ = missing angle)

tan (θ) = AB / BE

tan (θ) = 15/20

tan (θ) = 3/4

=》 θ = 37°

___________

Note:

Ray A & BE are parallel horizontal lines with AE as the transversal, so both the angles are equal to each other as then they will be alternate interior angles & they are represented in this question as 'θ'.

[Refer to the attachment for the figure]

____________________

Hope it helps ⚜

Viola is putting stamps in a book. She has 1,488 stamps. Each page in the book can hold 62 stamps. How many pages will she need for all of her stamps.
A 12
B 18
C 24
D 32

Answers

Answer:

Answer is C. 24

Step-by-step explanation:

1488 ÷ 62 = 24

Answer:

Yes, I agree with other person it is 24

Step-by-step explanation: 1488/62=24

So, your answer is C

༼ つ ◕_◕ ༽つ

Keith's chocolate bar is 39% cocoa. If the weight of the chocolate bar is 76 grams, how many grams of coca does it contain? Round your answer to the nearest tenth.

Answers

Answer:

29.64

Step-by-step explanation:

76 x 0.39 =29.64

Have a great day!

Please rate and mark brainliest!!

Select the correct answer.
What is 75 equal to?.
A.7 x 5

B.5x5x5x5 x 5 x 5 x 5

C:7 x 7 x 7 x 7 x 7
D.5’7

Answers

C , the little 5 at the top represents how many times 7 is multiplied.

multiply (5y+x)(5y-x)

Answers

Answer:

25y²-x²

Step-by-step explanation:

At the end of December, Justus and Eduardo both earned a one-time bonus at work, plus their hourly wages.

Justus’ earnings are modeled by the function J(x) = 38.25x + 50.00.
Eduardo’s earnings are modeled by the function E(x) = 30.20x + 52.00.
Justus and Eduardo worked the same number of hours.
If x represents hours worked, which function represents the total monthly earnings of Justus and Eduardo, M(x)?

Answers

By directly adding the two given linear equations, we will see that the function that represents the total monthly earnings is:

M(x) = 68.45*x + 102.00

How to get the total earnings of Justus and Eduardo?

We know that Justus' earnings are given by:

J(x) = 38.25x + 50.00.

While Eduardo's earnings are given by:

E(x) = 30.20x + 52.00.

The earnings of both together will be given by the direct sum of the two earnings above, so we have:

M(x) = E(x) + J(x) = 38.25x + 50.00 + 30.20x + 52.00

Now we can simplify this to get:

M(x) = (38.25 + 30.20)*x + 50.00 + 52.00

M(x) = 68.45*x + 102.00

This linear equation represents the total monthly earnings of Justus and Eduardo.

If you want to learn more about linear equations, you can read:

https://brainly.com/question/1884491

Select all of the algebraic expressions that could represent the phrase below.

nine more than the product of 5 times the number of tires t
9 + 5t
5 ▪ t + 9
(9 + 5)t
(5 × t) + 9
5 + 9t

Answers

5t + 9

Step-by-step explanation:

"The product of five times the number of tires t" means that you need to multiply 5 and t. "Nine more" means you need to add 9 to the product of 5 and t.

Answer:

[tex]5 \: times \: the \: number \: of \: tires \: t \: = 5t. \\nine \: more \: than \: that \: is \: 9 + 5t.[/tex]

hence the statement is represented by the expression 9 + 5t.

Need help with this, super confused on the last question. Please anything helps!

Answers

Answer:

On Wednesday they sold 5, over the four days they sold 19, and the third I believe it is 26.32 . Please rate me and mark me brainliest!

Step-by-step explanation:

sin7x - sin3x
cos 7x - cos3x

Answers

Answer:

= -cot5x

Step-by-step explanation:

sin7x - sin3x = sin(5x + 2x) - sin(5x - 2x)

= [sin5x cos2x + cos5x sin2x] - [sin5x cos2x - cos5x sin2x]

= 2 cos5x sin2x

cos7x - cos3x = cos(5x + 2x) - cos(5x - 2x)

= [cos5x cos2x - sin5x sin2x ] - [cos5x cos2x + sin5x sin2x]

= -2 sin5x sin2x

so

(sin7x - sin3x)/(cos7x - cos3x)

= -cos5x/sin5x = -cot5x

The histogram shows the scores of students on their most recent history test. How many students scored 80% or better on the test?

Answers

Answer:

i cant see it clearly to give you a propper answer

Find the value of n.
8 x n = 5 x 8

Answers

Answer:

n=5

Step-by-step explanation:

Solve and isolate n.

8 x n = 5 x 8

8 x n = 40      Divide out the 8

n=5

Factor 48e + 180 using gcf

Answers

Answer:

Hello!!! Princess Sakura here ^^

Step-by-step explanation:

The gcf is 12, so you'll divide 12 to both the 48 and the 180.

So it'll look like this...

[tex]12(4e+15)[/tex]

P.S. don't forget to the "e"

If you want to check if you're right just distribute the 12 and you should get 48e + 180 if you didn't you did something wrong.

The cost of 4 baseball bats and 3 softball bats is $389. If the baseball bats
cost $10 less than the twice the hat, write an equation to model the
situation so that we can find the cost of the hat and the baseball bat.

Answers

Answer:

    the price of a softball bat is 143 dollars, and the price of a baseball bat is 296 dollars.

Step-by-step explanation:

This is a problem that needs a set of equations because you are solving for two variables. The price of a baseball bat, and the price of a softball bat. To find the two equations in this sentence you take the context clues that are given to you. The first clue is that the cost of 4 baseball bats and 3 softball bats equals 389. Let's make b stand for the cost of a baseball bat, and s stand for the cost of a softball bat. The equation we can get from this piece of information is 4b +3s = 389 dollars. The second piece of information we get is that the baseball bats cost ten dollars less than twice the softball bat price. This is another equation that is b-10 = 2s.

    Now that we have both of the hidden equations, we can solve them to find the cost of baseball bats, and softball bats.

    First step is to solve one of the equations to get either one of the variables by themselves. I chose the second one, because it takes less steps. b-10 = 2s. If you add ten to both sides you get the variable b by itself in the equation: b = 2s - 10. Now we go back to the first equation, and substitute in 2s - 10 wherever there is a b. This makes equation one look like this: 4(2s - 10) +3s = 389. Now it is a solvable equation.  First you distribute the 4 to (2s - 10) you get 8s - 40 +3s = 389. Then you can add 8s and 3s together since they are the same variable. 11s - 40 = 389. Next, add the 40 to both sides to cancel it out, and you get that 3s = 429. Finally, divide both sides by 3 to get what s equals. s = 143.

    Now that we have the value of s, we can go back to the first equation and plug that value in to solve for b. This makes the first equation: b - 10 = 2(143).

Multiply the 2 and 143 first. Then, your equation looks like: b - 10 = 286. Finally, add the 10 to both sides to cancel it out and you get that b = 296.

    Putting this back into context: the price of a softball bat is 143 dollars, and the price of a baseball bat is 296 dollars.

If angle 1 is not congruent to angle 2, which conclusion must be true?

Answers

that they are not congruent

You start a new job. After w weeks, you have (10w+120) dollars in your savings account and (45w+25) dollars in your checking account. Write an expression in simplest form that represents the total in both accounts and how much money did you have before you started your job and how much money do you have save each week

Answers

Answer:

see below! :)

Step-by-step explanation:

total in both accounts: add both the expressions together

(10w+120) + (45w+25) = 55w+145

divide the expression by 55 to get it in simplest form.

w + 2.63

money i had before i started my job:

plug in 0 for w (0 weeks of having my job - means i just started my job and didn't receive my paycheck :c)

10(0) + 120 = 120                 <- savings account

45(0) + 25 = 25                   <- checking account

money i save each week:

compare when you plug in 1 for w and 2 for w into the "savings account" expression.

10(1) + 120 = 130

10(2) + 120 = 140

i save $10 a week (140-130 = 10)

hope this helped!! xoxoxo

.....................

Answers

Answer: 3

Explanation:
There’s models equal 3 1/2 and the whole number of that fraction is 3

What is another way to write 300 + 20 + 5

Answers

Answer:

25+300

320+5

305+20

Step-by-step explanation:

Answer:

Your answer is: 1) 150+160+15 2) 45+200+80 3) 300+5+20

Step-by-step explanation:

Hope this helped : )

Velocity If a stone is dropped from a height of 350 feet, its height after t seconds is given by
s = 350 − 16t2.
Find its instantaneous velocity function.
v(t) =

Find its velocity at time t = 3.
v(3) =

Answers

See picture for math work and answer.

Jacob can take any one of three routes from school to the mall, and one of five possible routes from the mall to his
house. If he doesn't retrace his steps, how many different ways can Jacob walk from school to home?
O 7
O 8
O 10
O 15

Answers

Answer:

8

Step-by-step explanation:

Answer:

D, 15

Step-by-step explanation:

1/2 divided 3/5 (also please explain how you did)

Answers

Answer: 5/6

Step-by-step explanation:

1/2 / 3/5 (you have to divide so you invert the 3/5 and multiply)

1/2 x 5/3 (then you multiply the upper numbers and write them up, and multiply the lower numbers and write them down

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