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Free_Kalibri [48]
2 years ago
9

A ball is dropped from a height of 12 feet and returns to a height that is one-

Mathematics
2 answers:
Nataly_w [17]2 years ago
8 0

Answer:

0.375ft

Step-by-step explanation:

Initial height: 12ft

First bounce: 12/2=12/2¹

Second bounce: (12/2¹)/2=12/2²

Third bounce: (12/2²)/2=12/2³

....

Fifth bounce: (12/2⁴)/2=12/2⁵

12/2⁵=12/32=0.375ft

nasty-shy [4]2 years ago
7 0

Answer:

0.375

Step-by-step explanation:

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The sum of two numbers is 87. if three times the smaller number is subtracted from the larger number the result is seven. find t
Stolb23 [73]
\left \{ {{a+b=87} \atop {a-3b=7}} \right.



a-3b=7
a=7+3b

a+b=87
(7+3b)+b=87
7+4b=87
4b=87-7
4b=80
b=20

a=7+3b
a=7+3*20
a=7+60
a=67
5 0
2 years ago
X²=9 determine if x belongs to Q or belongs to Q dash​
Elis [28]

x = 3 is the answer can you pls add me brainliest answer

4 0
2 years ago
Alaina has 7 in her bank account and earns 6 each day . joel has 48 in his banck account and earn 8 earch day in how many days w
Elis [28]

Answer:

I think you wrote something wrong.

Step-by-step explanation:

If Alaina has $7 in her bank account and Joel had $48 in his Joel already has more then Alaina but I will attempt to teach you how to solve these types of problems.

for this example I'm giving Alaina 79 dollars.

First we know were starting with 79 dollars and increasing 6 dollars each day so the equation for this is; y = 6x + 79 that is Alaina's equation.

For Joel our equation will be; y = 8x + 48.

Since they already have 79 and 48 dollars in their bank we put those as our B in the equation cause they are our y-intercepts. (Y = mx + b) Next we know their increasing by 6 and 8 dollars a day so we make those our m. Once we have these equations we can plot them and see where the lines meet. (thats our answer) I plotted them on desmos graphing calculator.

They crossed at (15.5, 172) Which means it will take 16 days for Joel to catch up they will both have 172 dollars in the bank account on the 16th day.

Hope this helps!

8 0
2 years ago
Sierra’s book has 200 pages. If she reads 20% of her, she will have read 40 pages. If Sierra has read 120 pages of her 200 pages
marysya [2.9K]

Answer:

60%

Step-by-step explanation:

Multiply 40 by 3 and you get 120 so then you multiply 20% by 3 and get 60%

5 0
2 years ago
I need help please :)
Mice21 [21]

Answer:

Um sorry if its wrong but I think its that it gets bigger as you go on.

Step-by-step explanation:

8 0
2 years ago
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