Answer:
7x^2 + 7
Step-by-step explanation:
So you collect the "like-terms". 3x^2 is not the same as 7, however, 4x^2 has the same term as 3x^2, so you add those together and then join the 7 in the expression.
Hope that explanation makes sense
Answer: 4.25
Step-by-step explanation:
2(d-3) + 22d= 120-24
2d - 6 + 22d= 96
2d +22d= 96+6
24d= 102
d= 102/24
d= 4.25
Well you do 228/12 to find your answer and that is 19 and to check you do 12*19=228
Answer:
Step-by-step explanation:
Now to find the sum of first 20 terms, substitute n=20,a=−1 and d=4 in S n = 2n [2a+ (n−1)d] as follows: S 20 = 220 [(2×−1)+(20−1)4]=10[−2+(19×4)]=10(−2+76)=10×74=740 Hence, the sum of first 20 terms is 740.
X+3=6
Subtract 3 from both sides
3-3=0
6-3=3
X=3
