Answer:
In mathematics, a set is closed under an operation if performing that operation on members of the set always produces a member of that set. For example, the positive integers are closed under addition, but not under subtraction: 1 − 2 is not a positive integer even though both 1 and 2 are positive integers.
Step-by-step explanation:
I hope this helps you out.
<h3>4x-4+12=20°+35°</h3><h3>4x+8=55°</h3><h3>4x=55°-8</h3><h3>4x=47°</h3><h3>x=47÷4</h3><h3>x=11.75</h3><h3>x=12</h3>
<h2> or</h2>
<h3>4x-4=12</h3><h3>4x=12+4</h3><h3>4x=16</h3><h3>x=16÷4</h3><h3>x=4</h3>
please mark this answer as brainlist
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
Answer:
she can fill 42 6-ounce glasses with the punch mixture
Step-by-step explanation:
1 cup = 8 ounces
15 cups = 120 ounces
132+120 = 252 ounces of punch mixture
252/6 = 42
42 glasses (each glass 6 ounces)
