If 2x+y=5, then y=5-2x, so she substituted correctly.
x+4x=5x, so she combined like terms correctly.
She didn't subtract 10 from both sides, she added 10 to both sides.
Check the solution:
The answer is: She made no mistake.
Answer:
If 12 and 14 are both side lengths then we solve for the hypotenuse:
hypotenuse^2 = 12^2 + 14^2
hypotenuse^2 = 144 + 196
hypotenuse^2 = 340
hypotenuse = sq root (340) = 18.4390889146
If hypotenuse = 14, then third side equals:
(3rd side)^2 = 14^2 - 12^2
(3rd side)^2 = 196 -144
(3rd side)^2 = 52
3rd side = sq root (52) = 7.2111025509
Step-by-step explanation:
Answer is B- you might begin to visualize the story.
The answer is 3/6.
So we know that 2/4 is equivalent to 1/2. 1/2 of 6 is 3. We can make this our numerator and our denominator as 6.
b = base length (of triangle)
h = height of triangle
s = side length of triangle
l = length of rectangle
