Hi there!
equation:521+479=1000..
<em><u>If your subtract 479 from 1,000, in addition form it should be the opposite..</u></em>
we also know that adding’s oppsite is subtracting and multiplyin’s opposite is dividing..
Therefore, the equation Erin used to check his answer would be 521+479=1,000..
Answer:
ln(x)/ln(11)
Step-by-step explanation:
You have to make an inequality:
1.2x + 6 ≤ 20
- 6 - 6 isolate x
1.2x ≤ 14
÷1.2 ÷1.2 isolate x
x ≤ 11.666
Since you can't buy 2/3 of a pack, she can only buy 11 pieces of gum.
Hope this helps!
Answer:
254.34 cm^2
Step-by-step explanation:
Volume of cylinder = 
We know that the diameter is 6, which means that the radius is 3 cm.
Now, it also tell us that that the height is triple the radius, this means that we multiply it by 3. Therefore, the height is 9 cm.
Now we know r = 3 cm and h = 9 cm, pi is assumed to 3.14 as well.
Substituting into the formula we will end up with 254.34 cm^2.