Which two-dimensional shape cannot be used to create a pyramid?

Mathematics

2 answers:

gizmo_the_mogwai [7]3 years ago

5 0

Answer:

A,C,D

Step-by-step explanation:

The only one you might use it the triangle

alexgriva [62]3 years ago

4 0

The answer is A, C , d

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The price of rail tickets increased by 5%

Arte-miy333 [17]

5% = 2.30pounds
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Solve the equation -2( 1 - 5v)

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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

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4 years ago

6th grade math (3x-2)5 simplified

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Answer:

15x−10

Step-by-step explanation:

=(3x+−2)(5)

=(3x)(5)+(−2)(5)

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3 years ago

Read 2 more answers

You need a 30-year, fixed-rate mortgage to buy a new home for $225,000. your bank will lend you the money at an apr of 5.5 perce

bulgar [2K]

Loan amount, P = 225000
interest = 5.5%/12 per month
Monthly payment, A = 1000

At the end of 30 years,
Future value of loan (with zero repayment)
F1=225000*(1+.055/12)^(30*12)
=1167162.264

Future value of repayment, A=1000 per month
F2= $\frac{A((1+i)^n-1)}{i}$
= $\frac{1000((1+.055/12)^{360}-1)}{.055/12}$
=913611.893

Therefore balloon payment
= F1-F2
=1167162.264-913611.893
=253550.37 (to the nearest cent)

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3 years ago