Answer
You can multiply the first equation by 4 and the second equation by 3.
You can multiply the first equation by 4/3.
You can multiply the first equation by 3.
Explanation
When solving a system of equations by elimination, you want to add or subtract the equations to "get rid" of a variable.
To do that, one of the variables in both equations have to have the same coefficient.
The first answer possible gives x the coefficient of 12 for both equations. You would get 12x+4y=52 and 12x-9y=39. You could subtract those equations to get 13y=13.
The second way gives x the coefficient of 4. You would multiply the first equation by 4/3 to get 4x+4/3y=52/3. You can subtract to get one variable, and then solve from there. Although, multiplying for 4/3 is annoying, so it's not suggested.
You can also "get rid" the the y. Multiply the first equation by 3 to get 9x+3y=39. You can add these equations. When you add 9x+3y=39 and 4x-3y=13 you get 13x=52.
Answer:
2
Step-by-step explanation:
If you square -4 it equals 16 and if you take that number and divibe it by 8 you get 2.
Volume of a sphere = (4/3)*pi*radius^3; so
Childs = (4/3)*3.14*4^3 = 267.9 = 268
Womens = (4/3)*3.14*4.5^3 = 381.5 = 382
Mens = (4/3)*3.14*4.8^3 = 463.0 = 463
the area and circumference ones are correct. a quadrilateral has 4 sides, so that one is incorrect. hope this helps!
