**Answer:**

9. -4

10. 24

**Step-by-step explanation:**

48/-12=-4

27-3=24

**Answer:**

The surface area of a solid object is a measure of the total area that the surface of the object occupies. ... Their work led to the development of geometric measure theory, which studies various notions of surface area for irregular objects of any dimension.

**Step-by-step explanation: And we pop out at your party**

**Answer: (1, 2)**

**Concept:**

There are three general ways to solve systems of equations:

- Elimination
- Substitution
- Graphing

Since the question has specific requirements, we are going to use <u>**elimination**</u>

**Solve:**

<u>Given expressions</u>

x + 5y = 11

-x + 4y = 7

<u>Add both equations together to elimination [x] variable</u>

(x + 5y) + (-x + 4y) = 11 + 7

x - x + 5y + 4y = 18

9y = 18

<u>Divide 9 on both sides</u>

9y / 9 = 18 / 9

<u>Find the x value</u>

x + 5y = 11 ⇔ <em>Given equation</em>

x + 5(2) = 11 ⇔ <em>Substitute values of y</em>

x + 10 = 11 ⇔ <em>Simplify by multiplication</em>

x + 10 - 10 = 11 - 10 ⇔ <em>Subtract 10 on both sides</em>

Hope this helps!! :)

Please let me know if you have any questions

**Answer: 2**

**Step-by-step explanation:**

**Answer:**

length of a rectangular is 4x

breadth of a rectangular is 3x

perimeter is 140m

perimeter of rectangular is

<h3>

**140**** ****= 2(l + b)**</h3>

put the value and you got the value of x

then;

find area

then put the value of length and breadth and x also

then you got the answer...