the picture is the working
the answer is 40
1 / 128 = (2/3) / x....1 cup to 128 grams = 2/3 cups to x grams
cross multiply
(1)(x) = (128)(2/3)
x = 256/3
x = 85.3
he went over...
85.3 - 32 = 53.3....he went over by 53.3 (or 53 1/3) grams
Answer: x = +4 or -4
Step-by-step explanation:
x² - 1 = 15
x² = 15 + 1
x² = 16
Therefore, to solve for x we take the square root of both side
√x² = +/-√16
x² = +/-4
so, x = +4 or -4
Answer:
the answer for this question is 45
Answer:
y=x\\
x=y^{2} + 12y\\
y^{2} + 12y -x = 0\\
Delta = (12^{2}) - 4.1.(-x) = 144 +4X = 36.(4+x)
\sqrt{Delta} = 6 . \sqrt{(4+x)} \\
y' = \frac{-12 + 6.(\sqrt{(4+x)}}{2} = -6 + 3.\sqrt{(4+x)}\\
y" = -6 - 3.\sqrt{(4+x)}\\\\
y' = 3.\sqrt{(4+x)} - 6\\
y''= -3.\sqrt{(4+x)} - 6\\
