The answer is C. You can solve these by plugging in and checking if each equation is true with the given answers. Also, you can solve by using elimination to get one of the variables removed. Then when you have two, two-variable problems, you can solve that system in any of the ways.
Answer:
14 i hope this leads you into the good
The way to figure this one out is move the 81 over to the other side so you have the equation 16x^4 = 81. Since 81 is not divisible by 16 you have to think of another way to simplify. 16 is a perfect square, x^4 is a perfect square, and 81 is a perfect square. So take the square root of both sides to begin the simplification. 4x^2 = 9. Divide both sides by 4 to get x^2 = 9/4. 9 and 4 are both perfect squares, so undo the square on the x by taking the square root of both sides: x = +/- 3/2.
Answer:
$0.75
Step-by-step explanation:
Greg spends $0.45 on a eraser and $0.30 on a pen. How much money does Greg spend?
Well first you find the key words, (How much) which means you will be using addition in this problem. The numbers you will be adding are $0.75 and $0.30 which equals, $0.75
The answer is 21.73684211
