Hello,
Please, see the detailed answer in the attached files.
Thanks.
Answer:

Step-by-step explanation:
The picture shows three isosceles tirangles with the same legs. The base of each triangle is 12 units, 5x-3 units and 17 units.
Since the angles at vertex of each isosceles triangles are 27°, 28° and 29°, then the lengths of the bases satisfy the double inequality
15<5x-3<17
Add 3 to this inequality
15+3<5x-3+3<17+3
18<5x<20
Divide it by 5:

Answer:
4th option
Step-by-step explanation:
(f - g)(x)
= f(x) - g(x)
=
- (3x² - 3x - 5)
= 4x² - 3x² + 3x + 5 ← collect like terms
= x² + 3x + 5
1/5
Step-by-step explanation:
there is only one yellow bead 2 red and 3 green you add the red and green with a total of 5 getting a ratio of 1/5