Answer:
0.4kg, 1.4kg and 1.8kg
Step-by-step explanation:
Given parameters:
Mass of alloy = 3.6kg
Ratio of elements in the alloy = 2:7:9
Unknown:
Mass of each element in the alloy = ?
Solution:
To find the mass of each element in the alloy, first find the sum of the ratio;
2+7+9 = 18
Mass of nickel = 
x 3.6 = 0.4kg
Mass of zinc = 
x 3.6 = 1.4kg
Mass of copper = 
x 3.6 = 1.8kg
The mass of each metal is 0.4kg, 1.4kg and 1.8kg
Answer:
(-3, -2)
Step-by-step explanation:
1. you moved right 7 units
2. you moved left 4 units
3. you ended up in (0, -2)
if you reverse it,
1. you start in (0, -2)
2. you move right 4 units (4, -2)
3. you move left 7 units (-3, -2)
Answer:
B. 3 to 10
Step-by-step explanation:
She uses 3 scoops of hot cocoa.
She uses 10 miniature marshmallows.
The ratio of scoops of hot cocoa to miniature marshmallows is 3 to 10.
I Would Say A Is The Correct One
