Answer:
- 3b(10a - 3b)
Step-by-step explanation:
Given
(5a - 3b)² - 25a² ← this is a difference of squares and factors in general as
a² - b² = (a - b)(a + b), thus
(5a - 3b)² - 25a²
= (5a - 3b)² - (5a)²
= (5a - 3b - 5a)(5a + 3b + 5a) ← simplify parenthesis
= - 3b(10a + 3b)
Answer:
one triangle
Step-by-step explanation:
hope this helps
Answer:
30 degrees
Step-by-step explanation:
Angle B is an inscribed angle -- its vertex is on the circle and it intersects the circle in two points, <em>A</em> and <em>C</em>.
The measure of an inscribed angle is always one half the measure of the intercepted arc. The intercepted arc has measure 60 degrees, so the measure of angle B is 30 degrees.
Answer:
D
Step-by-step explanation:
point-slope form is y-y1=m(x-x1) . since the slope is 2 and not -2, you can automatically eliminate choices A and C. since the y-value in the point, (1,-1), is -1, you will add it to y because you are subtracting a negative. (- - = +) therefore, the final equation, in point-slope form, is y+1=2(x-1), or answer choice D.
