the answer of 0.4 is 2/5 or 2 1/5
Answer:
D
Step-by-step explanation:
x² - 81 ← is a difference of squares and factors in general as
a² - b² = (a + b)(a - b)
Here a = x and b = 9, thus
x² - 81 = (x + 9)(x - 9) → D
Answer:
X = 20 and Y = 5
Step-by-step explanation:
you're supposed to substitute the numbers it so the problem x * 2 also means 10 * 2 because x = 10 and y * 1 also means 5 * 1 because y = 5
Answer:
In math, value can either refer to the result of a calculation or a variable or constant
9514 1404 393
Answer:
24.3 ft
Step-by-step explanation:
If h is the height of the ladder up the tree, the geometry can be modeled as a right triangle with legs h and 6, and hypotenuse 25. The Pythagorean theorem gives you the relation ...
h² +6² = 25²
h² = 625 -36 = 589
h = √589 ≈ 24.3
The ladder reaches about 24.3 feet up the tree.
