This is a systems of equations.
s = stamp, e = envelope
Substitute e + 9 for s.
.1(e + 9) + .13e = 2.51
Simplify.
.1e + .9 + .13e = 2.51
Simplify.
.14e + .9 = 2.51
Subtract .9 from both sides.
.14e = 1.61
Divide both sides by .14.
e = 11.5
Now, you can input e into the other equation.
11.5 + 9 = s
Simplify.
20.5 = s
s = 20.5, e = 11.5
Answer:
26 weeks i think
Step-by-step explanation:
Are you sure about your solves??
I think correct answer is 6,
I don't know but the standard way is in the photo:
In a 30-60-90 degree triangle, the ratio of the side lengths is 1:√3:2
if the hypotenuse is h, the legs are h/2 and h/√3 respectively
the area is (1/2)(h/2)(√3h/2)=√3h²/8
Answer:
Yes.
Step-by-step explanation:
Step 1: Write out expressions
1(b + 6) = b + 6
Step 2: Distribute 1
b + 6 = b + 6
