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BaLLatris [955]
3 years ago
5

In how many ways can you select a president and then a Vice President from a group of 5 students.

Mathematics
1 answer:
jeyben [28]3 years ago
3 0
21 different ways............
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The square pyramid has a base area of 144 square centimeters and a height of 12 centimeters. Find the volume.
MrMuchimi

Step-by-step explanation:

the answer is 576 cubic centimetre.

5 0
3 years ago
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A rocket is fired upward from some initial distance above the ground. Its height in​ feet, h,above the​ ground, t seconds after
kirill115 [55]
Check the picture below.

\bf \textit{ vertex of a vertical parabola, using coefficients}\\\\
\begin{array}{lccclll}
h(t) = &{{ -16}}t^2&{{ +96}}t&{{ +2560}}\\
&\uparrow &\uparrow &\uparrow \\
&a&b&c
\end{array}\qquad 
\left(-\cfrac{{{ b}}}{2{{ a}}}\quad ,\quad  {{ c}}-\cfrac{{{ b}}^2}{4{{ a}}}\right)

so.. the maximum point is at   \bf {{ c}}-\cfrac{{{ b}}^2}{4{{ a}}}~~~ft

and it happened after   \bf -\cfrac{{{ b}}}{2{{ a}}}~~~seconds

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

now, when the rocket reaches the ground, as you saw on the picture, y = 0, thus

\bf h(t)=-16t^2+96t+2560\implies 0=-16t^2+96t+2560
\\\\\\
0=-16(t^2-6t-160)\implies 0=t^2-6t-160
\\\\\\
0=(t-16)(t+10)\implies t=
\begin{cases}
\boxed{16}\\
-10
\end{cases}

"t" is an amount in seconds, for this specific phenomena, it cannot be negative, so -10 is not a feasible value.

8 0
3 years ago
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Part A. I have no clue
DochEvi [55]
-4x^2+2y^2= b because you add y to the similar factors.
6 0
3 years ago
Help me I know it is easy but i just cant think rn. :/​
Ipatiy [6.2K]
A. The Answer Is 8
Multiplication: 1/4 • 8 = 2

B. The Answer Is 12
Multiplication: 1/2 • 12 = 6

C. The Answer Is 20
Multiplication: 1/4 • 20 = 5

D. The Answer Is 40
Multiplication: 1/8 • 40 = 5

E. The Answer Is 18
Multiplication: 1/3 • 18 = 6

F. The Answer Is 18
Multiplication: 1/6 • 18 = 3

G. The Answer Is 30
Multiplication: 1/5 • 30 = 6

H. The Answer Is 60
Multiplication: 1/10 • 60 = 6

Hope Im Not Too Late :)
3 0
3 years ago
Toby is installing a new storage building in the back of his yard. The building measures 10 ft. x 12 ft. He’ll need a 10 foot lo
White raven [17]

Answer:

Not sure if this is correct but i believe the price would be $20,000

Step-by-step explanation:

Yoour perimeter is 120ft and it is 1/3 of a foot. So i did 120/3 and i got 40. The 40 is how many square feet you will need. you do 40x500 and i got $20,000. Sorry if this is wrong as i was kind of confused for a moment

5 0
4 years ago
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