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Naya [18.7K]
3 years ago
10

Is surface area 3-dimensional?

Mathematics
2 answers:
ANEK [815]3 years ago
8 0
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.
masha68 [24]3 years ago
6 0
Considered as it only taking the area of flat surfaces of a 3D object, no
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Simplify the expression: show all ur steps/ wrk PLEASE,1+2x3-18/3+(5(2+2)]
Maurinko [17]
Ok let's do this*pops knuckles*



let's add the first side

1 + 2 \times 3 - 18
order of operations demands that we do multiplication first(P.E.M.D.A.S)

so
2 \times 3 = 6
now we can add the 1 from
1 + (6) - 18
into our six


6 + 1 = 7
now we substract

(7) - 18 =  - 11
now we have
- 11  \div 3 + (5(2 + 2))
now we focus on the
other side
3 + (5(2 + 2))
since 5 is in paranthesis we use something called the distributive property. it mean we will multiply the 5 by both of the 2.
(5(2 + 2)) = (((5 \times 2) + (5 \times 2) = 20
now we have
3  + 20 = 23

(the three is from the original equation)

now we plug in our final numbers

- 11 \div 23
or
\frac{ - 11}{23}
I hope this helps
4 0
3 years ago
Read 2 more answers
Can u plz help me with this
7nadin3 [17]

Answer:

x = 61, y = 29

Step-by-step explanation:

29+x = 90

x = 61

x + y = 90

y + 61 = 90

y = 29

8 0
2 years ago
Read 2 more answers
Why can't <img src="https://tex.z-dn.net/?f=x%5E2-5x-1" id="TexFormula1" title="x^2-5x-1" alt="x^2-5x-1" align="absmiddle" class
7nadin3 [17]

Answer:

Step-by-step explanation:

Discussion.

Not directly. But the quadratic formula can do it. But that's not your question.

the factors you get must contain the factors for 1 which are 1 and - 1

These factors must add to - 5. There's no way that will happen with 1 and - 1 and you would be creative math if you tried to say that you could make one of the factors (x -1-1-1-1-1-1). That creates a whole new question.

5 0
2 years ago
How can emily use the above to make an estimate for 576 ÷8
Grace [21]

Given the equation :

576\div8​

We will use estimation to find the value of the given expression

So, the best estimation for the number 576 is = 600

The best estimation for the number 8 is = 10

So, the given expression is approximately = 600 ÷ 10 = 60

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

We can calculate the error of the approximation as following :

The actual value is : 576 ÷ 8 = 72

So, the difference is = 72 - 60 = 12

so, the percentage of error will be :

\frac{12}{72}\cdot100=16.7\%

7 0
1 year ago
Helppppppppppppppppppppp
serg [7]
The first thing you should do in this case is to compose both functions:
 f (x) = x + 7
 g (x) = 1 / (x-13)
 Making the composition
 f (g (x)) = (1 / (x-13)) + 7
 f (g (x)) = (7 (x-13) +1) / (x-13)
 Answer:
 The domain of the function is:
 x other than 13
 (option 4)
4 0
3 years ago
Read 2 more answers
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