Answer:
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Step-by-step explanation:
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Answer:
35 grams
Step-by-step explanation:
The ratio of zinc to copper is 3 to 11
A jar of chemical contains 385 grams if copper
Therefore the number of grams of zinc it contains can be calculated as follows
3/11= x/385
11x= 385
x= 385/11
= 35 grams
Hence the chemical contains 35 grams of zinc
Answer:
x =4.5
Step-by-step explanation:
this is an isosceles triangle
the legs are equal
4x + 6 = 6x - 3
subtract 6 from both sides
4x +6 - 6 =6x - 3 - 6
4x = 6x - 9
subtract 6x from both sides
4x -6x = 6x - 6x -9
-2x = -9
divide both sides by -2
-2x /-2= -9/-2
x =4.5