Answer:
x = -5/7
Step-by-step explanation:
8 1
---------- = ----------
x+3 x+1
Using cross products
8 (x+1) = 1 (x+3)
Distribute
8x+8 = x+3
Subtract x from each side
8x-x +8 = x-x+3
7x+8 =3
Subtract 8 from each side
7x +8-8 =3-8
7x = -5
Divide each side by 7
7x/7 = -5/7
x = -5/7
Givens
x = -2
y = 3
z = - 2
Expression2x - 3y - z
Substitute and solve
2(-2) - 3(3) - (-2) Notice that the 3 has 1 minus and the 2 has 2 minus signs. That means the the -3*3 = - 9 and - -2 = 2
-4 - 9 + 2
- 13 + 2
-11
Answer: 1st Choice
Answer:
Step-by-step explanation:
Use the Pythagorean Theorem to find the zeros of 6x² - 9x - 6.
x = [9±√(9²-4(6)(-6))]/[2(6)] = [9±√225]/12 = [9±15]/12 = 2, -½
To find if it's a right triangle, we use the Pythagorean Theorem of a² + b² = c² where a and b are the legs of the triangle (the shorter measurements) and c is the hypotenuse (the biggest measurement).
28² + 34² = 43²
784 + 1156 = 1849
1940 ≠ 1849
No. This is not a right triangle. The sum of the squares of the shorter measurements (AKA the legs) do not equal the square of the biggest measurement.
well I had 0.056 I'm not sure of my answer so please verify for me
