Answer:
See below.
Step-by-step explanation:
4(18-3k)=9(k+1)
72-12k=9k+9
+12k +12k
72=21k+9
-9 -9
63=21k
/21 /21
3=k
-hope it helps
D which means you add 12 plus 12
Answer:
14
Step-by-step explanation:
All you need to do is turn 70% into a decimal which is .70
Then multiply .70 and 20
.70*20
which gives you 14
Hi there,
I used the Desmos graphing calculator to graph the point -3≥x-y and this is what i got
Your coordinate points will be (0,3) and (-3,0)
Hope this is correct :)
Have a great day
Answer:
The amount invested at 4% is $20,500 and the amount invested at 10% is $500
Step-by-step explanation:
Let
x -----> the amount invested at 4%
(21,000 -x) ----> the amount invested at 10%
we know that
The interest of the amount invested at 4% plus the interest of the amount invested at 10% must be equal to $870


so

Solve for x





therefore
The amount invested at 4% is $20,500 and the amount invested at 10% is $500