Answer: 8
Step-by-step explanation: the given expression is 2n-3
so when n=1, we will get, 2(1)-3=2-3=-1
when n=2, we will get, 2(2)-3= 4-3=-1
when n=3, we will get 2(3)-3= 6-3=3
when n=4, we will get 2(4)-3 = 8-3=5
so the required result of expansion is -1+1+3+5=8
answer is 8.
hope that helped!
Answer:
12 + 2x
Step-by-step explanation:
<em>simplifying</em><em> </em><em>expression</em><em>:</em>
2(10) + 2(x-4)
2 × 10 = 20
2 × x = 2x
2 × -4 = -8
20 + 2x - 8
20 - 8 = 12
12 + 2x
<em>if you want to simplify it</em><em> </em><em>more</em><em>:</em>
(12/2) + (2x/2)
2(6 + x)
<em>if you want to solve for x:</em>
12 + 2x = 0
(12 - 12) + 2x = (0 - 12)
2x/2 = -12/2
x = -6
hope this helps you!
3.1 miles per minute
Explanation/how to do it:
You first need to know how many minutes are in an hour. Which is 60 once you get that you multiply it by 3 because there’s 3 hours with 60 minutes and you want everything converted into minutes. You should get 180 then and then you divide it 558 and you should get 3.1 and that would be your answer
