If your final is worth 15% of your grade and you have an 85 you need to score 118.33%. If you have an 85 and the final is worth 20% you need a 110%. If you have an 86 and the final is worth 15% you need 112.67%. If you have an 86% and the final is worth 20% you need a 106%. Good luck
the area and volume of the Pyramid of Gaza are 139, 840 m²
and 52950 m³ respectively.
<h3>How to determine the parameters</h3>
The formula for volume and area of a square pyramid are given thus;
Volume, V= ![a^2\frac{h}{3}](https://tex.z-dn.net/?f=a%5E2%5Cfrac%7Bh%7D%7B3%7D)
Area , ![A=a^2+2a \sqrt{\frac{a^2}{4}+ h^2 }](https://tex.z-dn.net/?f=A%3Da%5E2%2B2a%20%5Csqrt%7B%5Cfrac%7Ba%5E2%7D%7B4%7D%2B%20h%5E2%20%7D)
Where
- a is the base length
- h is the height
Substitute the values;
Area = ![230^2 + 2(230) \sqrt{\frac{230^2}{4}+ 150^2 }](https://tex.z-dn.net/?f=230%5E2%20%2B%202%28230%29%20%5Csqrt%7B%5Cfrac%7B230%5E2%7D%7B4%7D%2B%20150%5E2%20%7D)
Area = ![52900 + 460 + \sqrt{13225 + 22500}](https://tex.z-dn.net/?f=52900%20%2B%20460%20%2B%20%5Csqrt%7B13225%20%2B%2022500%7D)
Area = ![52900 + 460(189)](https://tex.z-dn.net/?f=52900%20%2B%20460%28189%29)
Area = 52900 + 86, 940
Area = 139, 840 m²
Volume , v = ![230^2 + \frac{150}{3}](https://tex.z-dn.net/?f=230%5E2%20%2B%20%5Cfrac%7B150%7D%7B3%7D)
Volume = 52900 + 50
Volume = 52950 m³
Thus, the area and volume of the Pyramid of Gaza are 139, 840 m²
and 52950 m³ respectively.
Learn more about a square pyramid here:
brainly.com/question/9071478
#SPJ1
Answer:
Step-by-step explanation:
I used Cramer's Rule to find y, since we can isolate and solve for individual variables using Cramer's Rule. Do that by finding the determinant of the matrix, |A|. The matrix A looks like this:
2 -2 1
-1 3 2
1 -4 -3
and we find the determinant of a 3x3 by expanding it. Do that by picking up the first 2 columns and throw them on at the end, like this:
2 -2 1 2 -2
-1 3 2 -1 3
1 -4 -3 1 -4
and find the determinant by multiplying along the 3 major axes and subtract from that the product of the 3 minor axes:
[(2*3*-3)+(-2*2*1)+(1*-1*-4)] - [(1*3*1)+(-4*2*2)+(-3*-1*-2)] which simplifies to
-18 - (-19) = 1
So the determinant of the matrix A is |A| = 1.
Now to find the determinant of Ay, we replace the y column with the solutions and so the same thing by expansion and then multiplying and subtracting:
2 -7 1 2 -7
-1 0 2 -1 0
1 1 -3 1 1
and find the determinant of y:
[(2*0*-3)+(-7*2*1)+(1*-1*1)] - [(1*0*1)+(1*2*2)+(-3*-1*-7)] which simplifies to
-15 - (-17) = 2
So the detminant of y is |Ay| = 2
We can solve for the variable now by dividing Ay by A:
2 / 1 = 2
So the solution for y = 2
Answer:
im too dumn
Step-by-step explanation: (1x-21)
Answer:
a and c are the correct answers
brainliest please
Step-by-step explanation:
simplify each equation and look for ones which solve to a simple numeric equality:
First equation solves to -3/7=-18/42...take a 6 from 18 and 42, and you get -3/7. -3/7=-3/7 which is true - that means that, no matter what value is inserted for x, a true equation will result = infinite number of solutions
Second equation simplifies to 3x=-30. Nope
Third equation simplifies to -18=-18 = infinite number of solutions
Fourth eq: 5=-7/2 = No solution
5th eq: 6.2x=-3.5-16.2 = nope