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Jet001 [13]
3 years ago
15

Please answer this question, I am timed. Thank you! :)

Mathematics
2 answers:
castortr0y [4]3 years ago
8 0
The correct answer is the second one. (B) because the perimeter is when all outside numbers are added up. So, the top and bottom of the rectangle it 5 units each. The height is 3 units each. If you add all of these numbers up, you get 16. (5+5+3+3)

I hope this helps!
frutty [35]3 years ago
4 0
The perimeter of the rectangle is 16
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Sean missed 8 questions when he took his quiz for the first time. when he took it the second time he only missed 3 questions. By
Ivanshal [37]

Answer:

37.5

Step-by-step explanation:

8 0
3 years ago
I have a pile of 20 coins that includes dimes and quarters. The coins total is $2.75. How many quarters do I have?
Ilia_Sergeevich [38]
You have 5 quarters which equals 25 cents each. Which in total comes to $1.25.
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Which in total comes to $1.50.
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3 years ago
Find the value of x and y that satisfy both equalities x/5=y/3 and 12/y=4/5 HURRY!!!!
Vika [28.1K]

x=25,y=15 Not to sure abt this answer but I think I got it

7 0
3 years ago
Urgent!
boyakko [2]

Step-by-step explanation:

18.

the last one.

-4.9t² + 24.5t + 117.6 = 0

the ball starts at 117.6 meters height. then, during the first seconds the thrust upwards is adding height, until finally, with more and more seconds passing, gravity will win with a vengeance and pulls the ball down faster and faster than any other force in any other direction.

19.

the general solution for a quadratic equation

y = ax² + bx + c

is

x = (-b ± sqrt(b² - 4ac))/(2a)

in our case

x = t

a = -4.9

b = 24.5

c = 117.6

t = (-24.5 ± sqrt(600.25 - -4×4.9×117.6))/-9.8 =

= (-24.5 ± sqrt(600.25 + 2304.96))/-9.8 =

= (-24.5 ± sqrt(2905.21))/-9.8 = (-24.5 ± 53.9)/-9.8

t1 = (-24.5 + 53.9)/-9.8 = -3

t2 = (-24.5 - 53.9)/-9.8 = 8

a negative time does not make any sense, so the real solution is : the ball reached the ground after 8 seconds.

20.

now the equation is

-4.9t² + 24.5t + 117.6 = 49

but this is quickly transformed again into a "= 0" equation :

-4.9t² + 24.5t + 68.6 = 0

t = (-24.5 ± sqrt(600.25 - -4×4.9×68.6))/-9.8 =

= (-24.5 ± sqrt(600.25 + 1344.56))/-9.8 =

= (-24.5 ± sqrt(1944.81))/-9.8 = (-24.5 ± 44.1)/-9.8

t1 = (-24.5 + 44.1)/-9.8 = -2

t2 = (-24.5 - 44.1)/-9.8 = 7

again, negative time does not make sense.

the ball will be at 49 m height after 7 seconds.

5 0
2 years ago
Khan Academy btw
Irina-Kira [14]

Answer:

B and D

Step-by-step explanation:

\frac{2^{5} }{6^{5} } = (\frac{1}{3} )^{5}

\frac{2^{5} }{6^{5} } = 2^{5}*6^{-5}

3 0
2 years ago
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