Can someone help me with the questions in the picture?

7)equilateral

8 and 9)scalene

10,11 and 12) isosceles

Step-by-step explanation:

Equilateral triangle has three equal angles and sides

scalene triangle has unequal angles and sides

isosceles has two equal angles and sides

25

step-by-step explanation:

3< x< 5

step-by-step explanation:

|x - 4| < 1

there are two solutions, one positive and one negative.   remember to flip the inequality when taking the negative solution

x-4 < 1       x-4 > -1

add 4 to each side

x-4+4 < 1+4       x-4+4 > -1+4

x< 5                 x> 3

3< x< 5