I’m not sure what the choices are so I don’t know what the correct answer is but expressions that could be equivalent are
r+r+t+r
3r+t
Answer:
D: II,I,III
Step-by-step explanation:
The areas are:
I 9 + 6/2 = 12
II 8/2 + 6/2 + 4 = 11
III 10/2 + 10 = 15
Basically, cut every shape up in a combination of rectangles and triangles, and remember that the area of the triangle is base*halfheight.
12 is 60% of 20. You can make 60% into a fraction (60/100) and set that fraction equal to 12/x. You then cross multiply (12*100 and 60*x) to get 1200=60x. You then divide both sides by 60 to get x, which equals 20.
Use PEMDAS:
P Parentheses first
E Exponents (ie Powers and Square Roots, etc.)
MD Multiplication and Division (left-to-right)
AS Addition and Subtraction (left-to-right)
-----------------------------------------------------------------------
Answer:
x=1/5
Step-by-step explanation:
To solve this question we will have to open the bracket first
So let's go back to the given question
-2(5x-1)+7(5x-1)-3(-5x+1)
We can actually equate the equation to zero
Let's solve
-10x+2+35x-7+15x-3=0
Let's collect like terms
-10x+35x+15x=-2+7+3
40x=8
Let's make x the subject of formula by dividing both sides by 40
x=1/5
So the final answer is 1/5
