Answer:
there is no solutions.
Step-by-step explanation:
replace y in 2y=4x+6 with 2x+6
2(2x+6)=4x+6
mulitply the terms
4x+12=4x+6
subtract 4x from both sides or the equal sign.
the answer is 12=6 which is not equal to each other
there's not solutions.
Answer:
battery costs $5, tax is $1.20, and so the total is $26.20
Step-by-step explanation:
In constructing the equation, you need to know the following:
1. What don't we know? How many minutes you must talk to have the same cost for both calling plans. So, let x be the number of minutes.
2. What do we know? Plan 1 charges $17.50 per month plus $0.17 per minute used and Plan 2 charges $32 per month plus $0.07 per minute used.
So the equation must look like this: 17.50 + .17x = 32 + 0.07x
Solving the equation:
1. Multiply both sides by 100
(100) 17.5 + .17x = 32 + 0.07x (100)
1750 + 17x = 3200 + 7x
2. Subtract 1750 from both sides
1750 + 17x - 1750 = 3200 + 7x - 1750
17x = 7x +1450
3. Subtract 7x from both sudes
17x - 7x = 7x + 1450 - 7x
10x = 1450
4. Divide both sides by 100
10x / 10 = 1450/10
x= 145 minutes
145 minutes is the number of minutes you must talk to have the same cost for both calling plans.
Answer:
12.25
sq m
Step-by-step explanation:
if circumference is 7 then the diameter is 7
Area = r²
A = (3.5)²
A = 12.25
