It would help for more information
Step-by-step explanation:
- -12=12i^2, 5
- -12-=12i^2*i^2
- 12(-4)=-48=48i^2
- -12(-5)=60
2
n
−
7
=
19
Explanation:
Well first we should look at the part that says "twice a number"
This number can be anything so let's assign a variable to it
Let
n
=
a number
And we also see at the end "twice a number equals 19"
So we get
2
n
=
19
Then we see that "Seven less than"
2
n
all equals
19
So we get
2
n
−
7
=
19
Now if you would want to solve this equation you first add
7
to both sides and we get
2
n
=
26
Then we divide both side by
2
So
n
=
13
Answer:
4 years
Step-by-step explanation:
After 3 years:
400(1.1³) = 532.4
n additional years
600 = 532.4(1.2^n)
1500/1331 = 1.2^n
ln(1500/1331) = n×ln1.2
n = 0.655
5th year
Answer:
276yd^2
Step-by-step explanation:
14*12 + 9*12 = 168+108 = 276
