Answer:
yes rachel is correct
Step-by-step explanation:
because 10%+20%=30%
Answer:
D) -6
Step-by-step explanation:
• solve x + 56+40= 90 90 because the triangle is a 90 degrees angle
• x+96=90
-96. -96
x=-6
Answer:
You need to add 30+21=51 Students
Answer:
C
Step-by-step explanation:
The volume of the regular pyramid is ![V=\dfrac{1}{3}A_{base}H.](https://tex.z-dn.net/?f=V%3D%5Cdfrac%7B1%7D%7B3%7DA_%7Bbase%7DH.)
The base of given pyramid is regular hexagon with side 12 cm. The are of this hexagon consistsof area of 6 equilateral triangles and is equal to
![A_{base}=6\cdot \dfrac{1}{2}\cdot 12\cdot 10.4=374.4\ cm^2.](https://tex.z-dn.net/?f=A_%7Bbase%7D%3D6%5Ccdot%20%5Cdfrac%7B1%7D%7B2%7D%5Ccdot%2012%5Ccdot%2010.4%3D374.4%5C%20cm%5E2.)
Hence, the volume of the pyramid is
![V=\dfrac{1}{3}\cdot 374.4\cdot 36=4,492.8\ cm^3.](https://tex.z-dn.net/?f=V%3D%5Cdfrac%7B1%7D%7B3%7D%5Ccdot%20374.4%5Ccdot%2036%3D4%2C492.8%5C%20cm%5E3.)
X = 0 ; y = 5 / 2 ;
y = 0 ; x = -5 ;
The right answer is C Z ;