Answer:
49º
Step-by-step explanation:
Answer:
Step-by-step explanation:

BC = 15 cm
3x = 15
x = 15/3 = 5
AB =4x = 4*5 = 20 cm
Pythagorean theorem,
AC² = AB² + BC²
= 20² + 15 ²
= 400 + 225
= 625
AC = √625 = 25 cm
AC = 25 cm

I believed there is a typo error in the choices. Below I assume that the correct choices:
<span>A. 9 (3+4)
</span>B. 9 (4+5)
C. 7(4+5)
D. 7(3+6)
The answer is letter A which is 9 (3+4) the greatest common denominator of 27 and 36 is 9. The factor of 27 is 9 and 3 while for 36 is 9 and 4. To check the answer you need to solve 9 (3+4) which is 63 while 27 + 36 is also 63.
Answer:
Step-by-step explanation:
![a_{1} = 8\\a_{9} = 360 = a_{1} \cdot r^9 = 8 \cdot r^9\\r = \sqrt[9]{\frac{360}{9} } \cong 1.53](https://tex.z-dn.net/?f=a_%7B1%7D%20%3D%208%5C%5Ca_%7B9%7D%20%3D%20360%20%3D%20a_%7B1%7D%20%5Ccdot%20r%5E9%20%3D%208%20%5Ccdot%20r%5E9%5C%5Cr%20%3D%20%5Csqrt%5B9%5D%7B%5Cfrac%7B360%7D%7B9%7D%20%7D%20%20%5Ccong%201.53)
By the formula of a geometric series:
