Adding three consecutive odd or even numbers is the same as multiplying the middle value by 3
Answer:
Step-by-step explanation:
3x - 7 = 2x + 7
3x - 2x = 7 + 7
x = 14
2x + 7 + 12y + 1 = 180
2(14) + 7 + 12y + 1 = 180
12y + 36 = 180
12y = 144
y = 12
Answer
x = 14 and y = 12
A right triangle has one 90°angle, and the sum of the 2 other angles equals 90.
an equilateral triangle has all sides and angles of the triangle congruent. each angle will equal 60°
an isosceles triangle has 2 congruent sides and 2 congruent angles.
a scalene triangle has no equal sides or equal angles.
an obtuse triangle has one angle that is greater than 90°
an acute triangle has all angles that are less than 90°
Hope this helps you classify your triangles!
Answer:
4r^3+8r^2-5r-10
= 4r^2(r+2)-5(r+2) [Factorise out like terms; distributive law of multiplication to check]
=(4r^2-5)(r+2) [Combine expressions]
