Answer:
Factor
5 out of 5
x^
2
+
10x
−
15
.
5
(
x^
2
+
2
x
−
3
)
5
(
x
−
1
)
(
x
+
3
)
answer^
2/9
5/10 *4/9=2/9
ask if you have any more questions
When a triangle has angles 30°, 60°, and 90°, its side lengths are related to each other by a special ratio.
This ratio is such that the side opposite the 30°-angle is 1, the hypotenuse is 2, and the side opposite the 60°-angle is √3. This gives a ratio 1:2:√3.
Now, if we put in 7 for the side length opposite the 30°-angle, then the hypotenuse y must be 2 · 7, or 14, and the unknown leg x must be 7√3.
In sum:
,
.
Estimation is 1,200 cause 400 x 3 = 1200 so that’s what I would estimate