Answer:
a
Step-by-step explanation:
the equation for a circle centered at orgin is x^2+y^2=r where r is the radius. multiplying, adding, or subtracting any numbers to the x and y components such as the other choices here causes the circle to be translated about the graph.
Answer:
Final alloy
- weighs grams
- contains grams of cooper
- percent of cooper in alloy is
Step-by-step explanation:
Suppose that a certain alloy is made by mixing 90 grams of an alloy containing 50% of copper with 70 grams of an alloy containing 35% copper.
50% alloy contains
grams of cooper
35% alloy contains
grams of cooper
Final alloy
- weight grams
- contains cooper grams
- percent of cooper in alloy
x/240 = 82/100
240 : 100 = 2.4
so 240 is divided with 2,4 giving 100, this will work with 82 too. So, 82 × 2.4 = 196,8
Answer : x = 196,8
prove :
196,8/240 = 82/100 = 41/50
see the picture
You can divide the total number of outcomes.