Answer:
x=3
Explanation:
Let's write an equation for the area of this figure.
This figure can be divided into 2 rectangles, a vertical and horizontal rectangle.
Area of rectangle= length× breadth
Area of vertical rectangle= 6x
Length of horizontal rectangle= (7 -x) cm
Area of horizontal rectangle= x(7-x)
Since total area= 30 cm^2,
6x+ x(7-x)= 30
6x +7x -x^2= 30 (expand)
-x^2 +13x-30= 0 (bring all terms to one side)
x^2 -13x +30= 0 (divide by -1)
(x -10)(x -3)= 0 (factorise)
x -10= 0 or x -3= 0
x= 10 or x= 3
(reject)
We reject x=10 since from the diagram, x cm is less than 6cm.
Answer:
3.14cm^2
Step-by-step explanation:
A= πr^2
A= 3.14x1^2
A= 3.14cm^2
<em>Answer:</em>
<em>x = 1/2</em>
<em>Step-by-step explanation:</em>
<em>24x - 3 = 9</em>
<em>24x = 9 + 3</em>
<em>24x = 12</em>
<em>x = 12/24</em>
<em>x = 1/2</em>
The formula for the height of a triangle is h=2(A/b)
So the answer is 4
Answer: 100m = 10^8 or 100000000 micrometer.
Step-by-step explanation:
1m = 10^6 or 1000000 micrometers.
Therefore, 1000000 × 100
= 100000000 or 10^8 micrometers.
Hope this helps. Please mark as brainliest if possible! ❤️