Answer:
Step-by-step explanation:
x²+6x+9=(x+3)²
Answer:
$10.25
Step-by-step explanation:
Set up a system of equations, so 3c + 2m = 7 and 2c + 4m = 8, where c = the cost of coffees, and m = cost of muffins
To solve multiply the first equation by -2(3c + 2m=7) so you get -6c -4m = -14 now add the two equations
-6c - 4m = -14
2c + 4m = 8 notice that -6c + 2c = -4c and -4m + 4m cancels, then -14+8=-6
so we have -4c = -6 so c = $1.50
To solve for m, substitute c = 1.50 so 3(1.50) + 2m = 7, so solve for m so
4.5 + 2m = 7, 2m = 2.5, so m = $1.25
So now solve the final problem 6(1.50) + 1(1.25) = $10.25
Answer:
2.6
Step-by-step explanation:
a = x, b = 3, c = 4
a^2 + b^2 = c^2 ... pythagorean theorem
x^2 + (3)^2 = (4)^2
x^2 + 9 = 16
x^2 = 16 - 9
x^2 = 7
x = sqrt(7)
x = 2.64575131106459
x = 2.6
Brainliest plz.?
Answer:
x>1/2
Step-by-step explanation:
2x - 3 > (2x - 5)/2 Multiply by 2 on both sides
2(2x - 3)> (2x - 5) Remove the brackets
4x - 6 > 2x - 5 Subtract 2x from both sides
4x - 2x - 6> 2x-2x - 5 Combine
2x - 6 > - 5 Add 6 to both sides
2x - 6+6 > -5 + 6
2x > 1 Divide by 2
z > 1/2
