Answer:

Step-by-step explanation:
All numbers in scientific notation or standard form are written
,
where m is a number between 1 and 10.
Almost positive isosceles triangle
What do you need help on.
The two congruent base angles tell us that this is an isosceles triangle, meaning the triangle has two congruent sides. Therefore, we can set these two expressions equal to each other and solve from there.
15x + 7 = 23x - 17
7 = 8x - 17
8x = 24
x = 3
Side = 15(3) + 7 = 45 + 7 = 52
Hope this helps!