It's 25 units :) I recommend desmos graphing calculator for these types of problems good luck
Answer:
9x² + 6xy + y²
Step-by-step explanation:
(a + b)² = a² + 2ab + b²
a = 3x
b = y
(3x +y)² = (3x)² + 2*3x*y + y²
= 9x² + 6xy + y²
(3x)² = 3²*x² = 3*3*x² = 9x²
Answer:
5/6-2/3=1/6
Step-by-step explanation:
You make the denominators the same. Like 5/6 and 2/3 you can make the fractions have the same denominator.
5/6-2/3 is the same as the equation 5/6-4/6 but simplified.
Answer:
A. x = (20√3)/3, y = (40√3)/3
Step-by-step explanation:
The ratios of the side lengths of a 30°-60°-90° right triangle are (shortest to longest) ...
1 : √3 : 2
In this triangle, they are ...
x : 20 : y
Multiplying the first ratio by (20√3)/3, we get ...
x : 20 : y = (20√3)/3 : 20 : (40√3)/3
Then the values of the variables are x = (20√3)/3, y = (40√3)/3.
_____
The above side length ratios correspond to sin(60°) = cos(30°) = (√3)/2, cos(60°) = sin(30°) = 1/2. These are values you might have memorized.
To find the product, we can multiply all 3 numbers.
= -6 × -7 × -1
= 42 × -1 (Anytime you multiply 2 negative numbers, it results in a positive number.)
= -42