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lana66690 [7]
2 years ago
10

What value of t is a solution for the following equation 1/2(t+4)=32

Mathematics
1 answer:
SIZIF [17.4K]2 years ago
5 0
1/2(t+4)=32

Multiply by 2:
t + 4 = 64

Subtract 4:
t = 60

Check by plugging in:
1/2(60 + 4) = 32
1/2(64) = 32
32 = 32 :)
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Matt has 43 coins in his piggy bank. He only has quarters and nickels and the total amount of money he has saved thus far is $5.
nikitadnepr [17]
The answer is 18.


He has 575 cents.

25q + 5n = 575
q + n = 43

(575-q*25)/5=n
Listing some points in the form (q,n), until we find that q+n is 43:
(0,115); q+n=115
(1,110); q+n=111
(2,105); q+n=107
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(11,60); q+n=71
(12,55); q+n=67
(13,50); q+n=63
(14,45); q+n=59
(15,40); q+n=55
(16,35); q+n=51
(17,30); q+n=47
(18,25); q+n=43
(19,20); q+n=39
(20,15); q+n=35
(21,10); q+n=31
(22,5); q+n=27
(23,0); q+n=23
(24,-5); q+n=19

When q+n is 43, he had 18 quarters!
18*25+(43-18)*5=575
There was a much easier way to do this.
7 0
3 years ago
The graph below shows the distance (y) in kilometers of two cars from their destination at different times (x) in minutes. The t
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