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qwelly [4]
2 years ago
15

marty saves $1 the first day of a month, $2 the second day, $4 the third day. he continues to double his savings each day. find

the amount that he will save by the 15th day. How do I solve this?
Mathematics
2 answers:
kvv77 [185]2 years ago
6 0
It seems you double the amount each day. keep doing that until you get to 15
Alex_Xolod [135]2 years ago
6 0
Simple... !,2,4,8,16,32,64,128,256,512,1024,2048,4096,8192,16384. He would have saved $16,384 by day 15. Just double each number as you go. Hope this helps!!


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The answer is 4.8feet in delta math
abruzzese [7]

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Step-by-step explanation:

6 0
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Please help!! <br><br> (Could you please show how you get the answer!)
Anna [14]

Step-by-step explanation:

when a line intersects with 2 (or more) parallel lines. then, of course, the intersection angle is the same with every of the intersected lines. otherwise they would not be parallel.

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6 0
1 year ago
In a collection of nickels, dimes, and quarters worth $6.90, the ratio of the number of nickels to dimes is 3:8. The ratio of th
dimulka [17.4K]
N=number of nickels
d=number of dimes
q=number of quarters

example
if n:d=3:8
lets say n=3 and d=8
3*8=8*3
so
8n=3d
slightly confusing but go with it, it migh make sense or it might not


n:d=3:8
8n=3d

d:q=4:5
5d=4q

solve for one of them
solve for nickels in first and quarters in second

8n=3d, n=(3/8)d
5d=4q, (4/5)d=q

5n+10d+25q=690
divide by 5 to make it easeir
n+2d+4q=138
sub (3/8)d for n
sub (4/5)d for q
(3/8)d+2d+5(5/4)d=138
(3/8)d+2d+25/4d=138

3/8+2+25/4=
3/8+16/2+50/8=
69/8

(69/8)d=138
times both sides by 8
69d=1104
divide both sides by 69
d=16

16 dimes
sub back

(5/4)d=q
(5/4)16=q
80/4=q
20=q

(3/8)d=n
(3/8)16=n
48/8=n
6=n



6 nickles
16 dimes
20 quarters
yah
8 0
3 years ago
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