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4 years ago

Which of the objects shown below could be sliced to create a circular cross-section?

2 answers:

7 0

I think a cylinder and sphere, because a cone would have a triangular cross section, cube would have a square cross section, triangular prism would have a triangular cross section, and a right pyramid would have a square cross section

Llana [10]4 years ago

4 0

Answer:

I know that the answer is triangular equilateral base on Khan Academy

Step-by-step explanation:

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Courtney walks 4 laps around 1/4 mile back. 1 mile is 5280 feet, how far did she walk

Alika [10]

Answer:

5280 feet

Step-by-step explanation:

one loop is 1 fourth of a mile

she walked 4 times, making it a full mile.

So, she walked 5,280 feet in total

8 0

4 years ago

Question 3 Unsaved

bazaltina [42]

Answer:

Step-by-step explanation:

DE given is

y''+8y'+15y=0, y(0)=0, y'(0)=1

Take Laplace on the DE

We get

$s^2 Y(s) -sY(0) -y'(0)+8(sY(s)-y(0))+15Y(s) =0\\s^2 Y(s) -s(0) -1+8(sY(s)-0)+15Y(s) =0\\Y(s)(s^2+8s+15)-1=0\\Y(s) = \frac{1}{s^2+8s+15}$

Simplify to get

Y(s) = $\frac{1}{2}[ {\frac{1}{s+3} -\frac{1}{s+5} }]$

Take inverse

$y(t) = \frac{e^{-3t} -e^{-5t}}{2}$

8 0

3 years ago

please help A hologram projection of Leia is 5.5 feet tall. The angle from the ground to the top of the hologram is 25°. How far

olya-2409 [2.1K]

Answer:

11.7947881

depends now how you wanna round it

Step-by-step explanation:

tan(25)=5.5/x

x=5.5/tan(25)

x=11.7947881

this is how we round it in my school

x≈11.8

3 0

3 years ago

What decimal is equal to 7/9

nekit [7.7K]

7/9 = 0.77777778

honestly i just googled this

6 0

3 years ago

Read 2 more answers

X is all of the following except.<br> a constant<br> a varlable<br> an expression

DanielleElmas [232]

Answer:

a constant

Step-by-step explanation:

6 0

3 years ago

Read 2 more answers