There are 88 green marbles!
g=numGreenMarbles
b=numBlueMarbles
g+b=104
g=5b+8
b=104-g
g=5(104-g)+8=520-5g+8
g=88
The definition of mathematics is the study of the sciences of numbers, quantities, geometry, forms, structure (algebra), and change (mathematical analysis). It has no generally accepted definition.
The full form of mathematics↓
(There are hundreds and this is just one of them)
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Answer:
c = √85
c = 9.2
Step-by-step explanation:
a² + b² = c²
7² + 6² = c²
49 + 36 = c²
85 = c²
c = √85
c = 9.2
Answer:
30 each of 23% bars and 18 each of 79% bars
Step-by-step explanation:
If x is the number of 1 kg 23% copper bars, and y is the number of 1 kg 79% copper bars, then:
x + y = 48
0.23x + 0.79y = 0.44(48)
Substituting and solving:
0.23x + 0.79(48-x) = 0.44(48)
0.23x + 37.92 - 0.79x = 21.12
16.8 = 0.56x
x = 30
y = 48 - x
y = 18
You need 30 each of 23% bars and 18 each of 79% bars.
