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S_A_V [24]
3 years ago
14

Which expression is equivalent to 1/4x+3-1/3x+(2)

Mathematics
1 answer:
Simora [160]3 years ago
4 0

Answer:

5 - 1/12x.

Step-by-step explanation:

1/4x + 3 - 1/3x + (2)

= 1/4 x - 1/3 x + 3 + 2

=  3/12 x - 4/12 x + 5

= -1/12 x + 5.

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Hello! How do I find the surface area of this prism? Thanks!
Studentka2010 [4]
Answer: Choice C) 124 square cm

------------------------------------------------------------------

Explanation:

Let's calculate the area of the trapezoid shown
b1 and b2 are the parallel bases; h is the height of the 2D trapezoid
b1 = 2
b2 = 5
h = 1.5

A = h*(b1+b2)/2
A = 1.5*(2+5)/2
A = 1.5*7/2
A = 10.5/2
A = 5.25
The area of one 2D trapezoid is 5.25 sq cm
There are two of these trapezoids that form the base faces of the trapezoidal prism. So the total base area is 2*5.25 = 10.5 sq cm
Keep this value (10.5) in mind. We'll use it later.

------------

Now onto the lateral surface area (LSA)
It turns out that the formula for the LSA is
LSA = p*d
where 
p = perimeter of the trapezoid shown
d = depth or height of the 3D trapezoid (I'm not using h as it was used earlier)
This formula works for any polygonal base. It doesn't have to be a trapezoid.

In this case the perimeter is,
p = 1.7+2+2.65+5
p = 11.35

So
LSA = p*d
LSA = 11.35*10
LSA = 113.5

Add this LSA to the base area found earlier
10.5+113.5 = 124

The total surface area is 124 square cm
8 0
4 years ago
What is 1/5 into a decimal?
andrey2020 [161]

Answer:

0.2

Step-by-step explanation:

it just is. look it up they will have an explanation

6 0
3 years ago
4a^2 - 8a = 24. I need help with this
nignag [31]

The answer is a=3.646

6 0
3 years ago
The side lengths 9, 13, and 17 form a triangle.<br><br><br> TrueFalse
kiruha [24]

Answer:

Yes.  As long as the sum of two sides is greater than the third side a triangle can be formed.

Step-by-step explanation:

7 0
3 years ago
Michael wants to take French or Spanish, or both. But classes are closed, and he must apply and get accepted to be allowed to en
Brums [2.3K]

Answer:

80%.

Step-by-step explanation:

Given the following probabilities:

  • P(Micheal Being admitted to French), P(F)=50%
  • P(Micheal Being admitted to Spanish), P(S)=50%

In Probability Theory, when we have BOTH , we mean the intersection of the probabilities. Therefore:

  • P(Micheal Being admitted to BOTH French and Spanish), P(F \cap S)=20\%

We want to determine the probability that he will be enrolled in either French or Spanish (or possibly both).

Probability of either A OR B =P(F \cup S)

From Probability Theory:

P(F \cup S) = P(F)+P(S)-P(F \cap S)\\P(F \cup S) =50+50-20\\P(F \cup S) =80

The probability that he will be enrolled in either French or Spanish (or possibly both) is 80%.

3 0
4 years ago
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