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BigorU [14]
2 years ago
15

The sum of two numbers is 24. Their difference is 15. What are the two numbers?

Mathematics
1 answer:
ipn [44]2 years ago
5 0
X+y = 24x-y = 15 Thus, x=15+y Substitute for x in first equation becomes 15 +y + y = 24. 2y=9; therefore y=4.5, and since x = 24-y, x= 19.5 Check answer: 4.5 + 19.5 = 24; 19.5-4.5 = 15

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3 x 16 divided by 2-1
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4 0
2 years ago
Simplify the following radical:<br> 84
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3 0
3 years ago
Read 2 more answers
Help!!!!!!!!!!!!!!!!
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3 0
2 years ago
Read 2 more answers
Two numbers have a difference of 0.7 and a sum of 1 . What are the numbers
Crank
First number is f
Second number is s
f-s=.7
f+s=1
Using elimination, you could solve this.
-1(f-s=.7); eliminate the first number.
-f+s= -.7
f+s=1
2s=.3
s=.15
Now find the second number by plugging it in:
.15+s=1
1-.15=.85
The numbers are .15 and .85.


5 0
2 years ago
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