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2 years ago

What is the surface area of a polyhedron?

Mathematics

2 answers:

Liono4ka [1.6K]2 years ago

6 0

Answer:

Step-by-step explanation:

That the answer Plss follow me thanks

andrezito [222]2 years ago

3 0

Answer:

The answer is D, a surface area of a polyhedron is adding up all the areas of it faces.

Not 100% sure but I think this is what the answer is.

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Find the median, first quartile, third quartile, interquartile range, and any outliers for each set of data. 111, 68, 93, 88, 74

lilavasa [31]

Answer:

Q1 = 87 ;

Q2 = 102 ;

Q3 = 115 ;

IQR = 28

OUTLIER = None

Step-by-step explanation:

Given the data:

111, 68, 93, 88, 74, 152, 119, 87, 88, 105, 84, 102, 151, 115, 112

Ordered data : 68, 74, 84, 87, 88, 88, 93, 102, 105, 111, 112, 115, 119, 151, 152

Sample size, n = 15

The first quartile, Q1 = 1/4(n+1)th term

Q1 = 1/4(15+1)th term

Q1 = 1/4(16) = 4th term

Q1 = 87

The Median , Q2 = 1/2(n+1)th term

Q2 = 1/2(15+1)th term

Q2 = 1/2(16) = 8th term

Q2 = 102

The third quartile, Q3 = 3/4(n+1)th term

Q3 = 1/4(15+1)th term

Q3 = 3/4(16) = 12th term

Q3 = 115

The interquartile range, IQR = Q3 - Q1

IQR = (115 - 87) = 28

Q1 = 87 ;

Q2 = 102 ;

Q3 = 115 ;

IQR = 28

OUTLIER = None

4 0

3 years ago

Solve the following system using the substitution, elimination, or graphing method for the x coordinate:

igomit [66]

Hey there!

To solve this system of equations, you will need to get one of the terms in both equations to cancel out to zero. If there isn't a term that you can cancel out, you can multiply either or both equations to make that term. There's no wrong way to do this, just as long as you make sure that you double check whether your should add or subtract. This is easier shown than explained, so refer below:

<span> x + y = +1
5x + y = –6

</span>–1(x + y = +1)
5x + y = –6

–x – y = –1
5x + y = –6

You can see that once we combine these equations by adding, the y term will become 0, eliminating it. This is necessary for solving the system, so make sure you do it. Also, remember to distribute the term that you need to to all of the numbers in the equation! After that, just solve for the variable that's still in the equation.

–x – y = –1
+ 5x + y = –6

4x + 0y = –7
4x = –7
x = –1.75

Now, just plug the value we found for x into either one of your equations in the original system as it's presented in your problem.

x + y = 1
–1.75 + y = 1
+1.75 +1.75

y = 2.75

All that's left to do is check your point (–1.75, 2.75). If it's true for both equations, your answer is correct!

–1.75 + 2.75 = 1
<span>5(–1.75) + 2.75 = –6

</span>(–1.75, 2.75) is the solution to your system.

Hope this helped you out! :-)

3 0

3 years ago

Samantha wants to put a fence around her backyard. She buys the fence in 6-foot sections and needs 12 sections. She spends a tot

Solnce55 [7]

6 foot =850
850÷6=141.667
then for 12 section
141.667x 12=1700 or

you find the ratio of 6:12
= 1:2
therefore 2×850=1700

5 0

2 years ago

Simplify: -5/4 divided by 2 3/5

masha68 [24]

25/52 25 is the numerator
52 is the denominator

4 0

3 years ago

Write and simplify an expression for the perimeter of each figure

kolbaska11 [484]

The picture is a bit blurry but the perimeter of a shape is the lengths added.

(4a - 2b) + (7a + 3) + (9a - 4) = perimeter, I added the sides together

Combine like terms to get:

4a + 7a + 9a = 20a

-2b is left along becuase there are no other like terms

3 - 4 = -1

The perimeter is 20a - 2b - 1

3 0

3 years ago

Read 2 more answers