#4)
cross multiply
2(8x+10) = 4 * 5x
16x + 20 = 20x
4x = 20
x = 5
I believe that the answer is 1845
the surface area of the cube is 1350
the surface area of the pyramid is 495
the total surface area is :
![1350 + 495 = 1845](https://tex.z-dn.net/?f=1350%20%2B%20495%20%3D%201845%20)
good luck
If I've read this correctly, it looks like this.
![\dfrac{(x + 1)}{2 - \dfrac{(x + 2)}{3x}}](https://tex.z-dn.net/?f=%20%5Cdfrac%7B%28x%20%2B%201%29%7D%7B2%20-%20%5Cdfrac%7B%28x%20%2B%202%29%7D%7B3x%7D%7D%20%20%20)
If that is correct, then the first step is to put the top part of the denominator over 3x
The next part is to flip a three tier fraction. I'm afraid I have to show what happens. My latex is not that strong.
What you get is
![\dfrac{3x*(x + 1)}{(5x - 2)}](https://tex.z-dn.net/?f=%20%5Cdfrac%7B3x%2A%28x%20%2B%201%29%7D%7B%285x%20-%202%29%7D%20%20)
This is just about your final answer. You could write it as
![\dfrac{3x^2 + 3x}{(5x - 2)}](https://tex.z-dn.net/?f=%20%20%5Cdfrac%7B3x%5E2%20%2B%203x%7D%7B%285x%20-%202%29%7D%20%20)
Answer:
![\approx74796](https://tex.z-dn.net/?f=%5Capprox74796)
Step-by-step explanation:
GIVEN: In the
school year in country A, there were
foreign students from country B. This number is
more than the number of students from country C.
TO FIND: How many foreign students were from country C.
SOLUTION:
Total foreign students from country B ![=92000](https://tex.z-dn.net/?f=%3D92000)
let the foreign students from country C be ![x](https://tex.z-dn.net/?f=x)
As the students from country B is
more than the country C
Students from country B
![92000=\frac{123}{100}x](https://tex.z-dn.net/?f=92000%3D%5Cfrac%7B123%7D%7B100%7Dx)
![x=\frac{9200000}{123}](https://tex.z-dn.net/?f=x%3D%5Cfrac%7B9200000%7D%7B123%7D)
![x\approx74796](https://tex.z-dn.net/?f=x%5Capprox74796)
Hence the number of students from country C are ![74796](https://tex.z-dn.net/?f=74796)
Answer:
The answer is 91/10
Step-by-step explanation:
hope this helps
Solutions:
2 3/5÷2/7
13/5÷2/7
13/5×7/2
=13×7=91
=5×2=10
That's why the answer is 91/10