Answer:
There area 14 one cent stamps
Step-by-step explanation:
Let
x -----> the number of 1 cent stamps
y -----> the number of 8 cent stamps
z -----> the number of 12 cent stamps
we know that
0.01x+0.08y+0.12z=1.78 -------> equation A
x=y+4 ------> y=x-4 -----> equation B
x=2z -----> z=0.5x ------> equation C
substitute equation B and equation C in equation A and solve for x
0.01x+0.08(x-4)+0.12(0.5x)=1.78
0.01x+0.08x-0.32+0.06x=1.78
0.15x=1.78 +0.32
0.15x=2.10
x=14
therefore
There area 14 one cent stamps
Answer:
24
Step-by-step explanation:
i used calculator. it is so easy
If you estimate it the equation is -10+12=9+12=21 or 2=21=21 so the answer is false<span />
Answer:
its 323 so you were right :) if 323 is your answer lol
Step-by-step explanation:
abs(T-50)=323 Where T is in degrees Kelvin.
abs () means absolute value.
So T=323 plus or minus 50
Answer:
.
Step-by-step explanation:
is the equation for a circle with center (h,k) and radius r.
You are given center (6,2) and radius 4.
So we will replace h with 6 and k with 2 and r with 4.
This gives us:
Simplify:
.
