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inysia [295]
3 years ago
5

I WILL GIVE THE BRAINIEST

Mathematics
2 answers:
miskamm [114]3 years ago
6 0

Answer:

the answer is A

Step-by-step explanation:

A. the product of two irrational numbers.

miv72 [106K]3 years ago
4 0

Answer:

A.

Step-by-step explanation:

the product of two irrational numbers

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krek1111 [17]
In 5 months. In five months joy will have 25 and john will have 25
6 0
3 years ago
We are standing on the top of a 1680 ft tall building and throw a small object upwards. At every second, we measure the distance
MAVERICK [17]

Answer:

a) The height of the small object 3 seconds after being launched is 2304 feet.

b) The small object ascends 128 feet between 5 seconds and 7 seconds.

c) The object will take 6 and 10 seconds after launch to reach a height of 2640 feet.

d) The object will take 21 seconds to hit the ground.

Step-by-step explanation:

The correct formula for the height of the small object is:

h(t) = -16\cdot t^{2}+256\cdot t+1680 (1)

Where:

h - Height above the ground, measured in feet.

t - Time, measured in seconds.

a) The height of the small object at given time is found by evaluating the function:

h(3\,s)= -16\cdot (3\,s)^{2}+256\cdot (3\,s)+1680

h(3\,s) = 2304\,ft

The height of the small object 3 seconds after being launched is 2304 feet.

b) First, we evaluate the function at t = 5\,s and t = 7\,s:

h(5\,s)= -16\cdot (5\,s)^{2}+256\cdot (5\,s)+1680

h(5\,s) = 2560\,s

h(7\,s)= -16\cdot (7\,s)^{2}+256\cdot (7\,s)+1680

h(7\,s) = 2688\,s

We notice that the small object ascends in the given interval.

\Delta h = h(7\,s)-h(5\,s)

\Delta h = 128\,ft

The small object ascends 128 feet between 5 seconds and 7 seconds.

c) If we know that h = 2640\,ft, then (1) is reduced into this second-order polynomial:

-16\cdot t^{2}+256\cdot t-960=0 (2)

All roots of the resulting equation come from the Quadratic Formula:

t_{1} = 10\,s and t_{2}= 6\,s

The object will take 6 and 10 seconds after launch to reach a height of 2640 feet.

d) If we know that h = 0\,ft, then (1) is reduced into this second-order polynomial:

-16\cdot t^{2}+256\cdot t +1680 = 0 (3)

All roots of the resulting equation come from the Quadratic Formula:

t_{1} = 21\,s and t_{2} = -5\,s

Just the first root offers a solution that is physically reasonable.

The object will take 21 seconds to hit the ground.

8 0
2 years ago
1. Evaluate the following expression. Write your answer WITHOUT any exponents. (52)8 x 5-9​
lara31 [8.8K]

Answer:

The answer is 2080x - 9

Hope this helps

7 0
3 years ago
PLEASE HELP MEEEE <br><br><br> and ty :)
polet [3.4K]

Step-by-step explanation:

did you try to apply 2 for all the x's in the problem

6 0
2 years ago
1. Tickets to the school musical cost $3 for students and $5 for
Gre4nikov [31]

Answer:

Your answer.

3x + 5y = 1790

y= 2x -100

X= 176.15

Y= 252.3

Thank you. And give my answer as Brainlist answer. Follow me for more

Step-by-step explanation:

7 0
3 years ago
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