22 i think idk sorry if i’m wrong
0.12 x 70 = 8.4
12% of 70 is 8.4
Answer:
x = 3; y = -6
Step-by-step explanation:
x - 2y = 15
2x + 4y = -18
Multiply both sides of the first equation by 2. Write the second equation below it, and add the two equations.
2x - 4y = 30
(+) 2x + 4y = -18
---------------------------
4x = 12
4x/4 = 12/4
x = 3
Now we substitute 3 for x in the first equation and solve for y.
x - 2y = 15
3 - 2y = 15
-2y = 12
y = -6
Answer: x = 3; y = -6
7+4a=55
4a=55-7
4a=48
a=48/4
a=12
Answer:
let
i= simple interest
p= principal
t= time
r=rate
data given
p=$720
r=4.25%
t= 3months
i=?
from the formula
i=prt
i=$720×(4.25/100)×3
i=$720×0.0425×3
i=$91.8
therefore simple interest for 3 months is $91.8
