Answer:
180
Step-by-step explanation:
2 times 30 equals 60 which is an hour so 6 times 30 equals 180.
Answer:
3.456E + 14= ![3.456X10^{14](https://tex.z-dn.net/?f=3.456X10%5E%7B14)
Step-by-step explanation:
The river discharges
cubic feet of water into the Pacific Ocean each second.
There are 86,400 seconds in one day.
Amount of water discharges each day
![=4X10^6X86400\\=345600000000\\=3.456X10^{11](https://tex.z-dn.net/?f=%3D4X10%5E6X86400%5C%5C%3D345600000000%5C%5C%3D3.456X10%5E%7B11)
Since this differs from what you have, I will explain the scientific notation.
3.456E + 14 simply means ![3.456X10^{14](https://tex.z-dn.net/?f=3.456X10%5E%7B14)
The options are not well laid out but you can pick the appropriate option.
So.... notice the picture below
now, we know what the "height" or "altitude" is
now, we also know the perimeter is 18cm
so, k + k + b = 18
or 2k + b = 18
thus
![\bf k=\cfrac{18-b}{2}](https://tex.z-dn.net/?f=%5Cbf%20k%3D%5Ccfrac%7B18-b%7D%7B2%7D%20)
so... one can say that
![\bf \textit{area of a triangle}=A=\cfrac{1}{2}bh\qquad \begin{cases} b=b \\\\ h=\sqrt{k^2-\left( \frac{b}{2} \right)^2} \\\\ h=\sqrt{k^2-\frac{b^2}{4}}\\ --------------\\ k=\frac{18-b}{2}\qquad thus\\ --------------\\ h=\sqrt{\left( \frac{18-b}{2} \right)^2-\frac{b^2}{4}} \end{cases}\\\\ -----------------------------\\\\ A=\cfrac{1}{2}\cdot b\cdot \sqrt{\left( \frac{18-b}{2} \right)^2-\frac{b^2}{4}}](https://tex.z-dn.net/?f=%5Cbf%20%5Ctextit%7Barea%20of%20a%20triangle%7D%3DA%3D%5Ccfrac%7B1%7D%7B2%7Dbh%5Cqquad%20%0A%5Cbegin%7Bcases%7D%0Ab%3Db%0A%5C%5C%5C%5C%0Ah%3D%5Csqrt%7Bk%5E2-%5Cleft%28%20%5Cfrac%7Bb%7D%7B2%7D%20%5Cright%29%5E2%7D%0A%5C%5C%5C%5C%0Ah%3D%5Csqrt%7Bk%5E2-%5Cfrac%7Bb%5E2%7D%7B4%7D%7D%5C%5C%0A--------------%5C%5C%0Ak%3D%5Cfrac%7B18-b%7D%7B2%7D%5Cqquad%20thus%5C%5C%0A--------------%5C%5C%0Ah%3D%5Csqrt%7B%5Cleft%28%20%5Cfrac%7B18-b%7D%7B2%7D%20%5Cright%29%5E2-%5Cfrac%7Bb%5E2%7D%7B4%7D%7D%0A%5Cend%7Bcases%7D%5C%5C%5C%5C%0A-----------------------------%5C%5C%5C%5C%0AA%3D%5Ccfrac%7B1%7D%7B2%7D%5Ccdot%20b%5Ccdot%20%5Csqrt%7B%5Cleft%28%20%5Cfrac%7B18-b%7D%7B2%7D%20%5Cright%29%5E2-%5Cfrac%7Bb%5E2%7D%7B4%7D%7D)
and you can simplify it if you wish.. not sure you have to
Answer:
Sí, 7 es un número natural
Step-by-step explanation:
Answer:
Step-by-step explanation:
18=2(3)3
36=2(2)3(3)
The GCF will be the product of their common factors, specifically 2(3)3=18