Answer:
False
Step-by-step explanation:
If two spheres have the same center but different radii, they are NOT called concentric spheres. They would be called congruent circles if they have the same center but different radii.
There's an infinite number of equivalent ratios for 27:15, these are the ones that just came to my mind:
27:15 = 54:30 (because 27 * 2 = 54 and 15 * 2 = 30)
27:15 = 9:5 (because 27 / 3 = 9 and 15 / 3 = 5)
27:15 = 135:75 (because 27 * 5 = 135 and 15 * 5 = 75)
Y = 15
x - y = 30
We replace y with the given value:
x - 15 = 30
x = 30 + 15
x = 45
It will take Nayeli 4 days
I got this answer by dividing 50÷1/4 which equals 12.5. If Nayeli plans to swim 1/4 mile each day until she has reached 50 miles, she would've done 12.5 miles per day. To check if I am correct, multiply 12.5×4 and it will equal to 50. (also, I did 25÷2 to get 12.5. The reason I did this is because 25 is half of 50, so to split it into 4 I had to make 25 half of what it already is)
