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hjlf
4 years ago
11

4. SALARY Lux earns $400 for 40 hours

Mathematics
1 answer:
nevsk [136]4 years ago
8 0
Luz earns $400 for 40 hours of work
this represents :
400/40 = $10 per hour
therefore
in 6 hours, she will earn :
6 x $10 = $60
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The product of two numbers is 36 and their sum is 37. What is their difference?
hichkok12 [17]
Hello,
Let's be a the greatest number, b the smallest

Method 1:

a+b=37 ==>b=37-a
a*b=36==>a(37-a)=36
==> a²-37a+36=0
==>a²-36a-a+36=0
==>a(a-36)-(a-36)=0
==>(a-36)(a-1)=0
(a=36 and b=37-36=1) or (a=1 and b=37-1=36) but a>b ==>exclude
==>a-b=35

Method 2:

a*b=36
a+b=37 ==>(a+b)²=37²
(a+b)²-4ab=37²-4*36
==>a²+2ab+b²-4ab=1225
==>(a-b)²=35²
==>a-b=35 or a-b=-35 (to exclude since a>b)




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