Answer: 200
Step-by-step explanation:
since 10 is one part
10 x 20 = 200
15x = 5y divide by 3, 3x=y. I believe
Answer:
266
Step-by-step explanation:
if a 45 minute workout is 1000 calories, at the same rate, a 12 minute workout would be 266 calories and 2 thirds. 
x 1000 = 266
Answer:
Sales tax is $4.20
Step-by-step explanation:
70*6/100=4.2
Answer: B, x=20; angle measure is 30°.
Step-by-step explanation:
Opposite angles are always the same.
You can see that 30° and 3x are opposite angles therefore 3x=30°.
In algebra, when a letter and a number are next to each other, it means times.
So, 3x=30° means 3 times something equals 30.
And we know that 3×10=30 so, x=10.
Hope this helps :)
