Answer:
The cost is $75
Step-by-step explanation:
Given
Required
Cost of 3 cubic yards -- Missing from the question
The required means that: 
Plug in 
to
<em>The cost is $75</em>
THE ANSWER TO X IS 14
1-3x+15
-3x=12/3=4
2-5x-45
+5=50/5=10
3-4+10=14
I think your answer would be 4,000
Answer:
x = 4
Step-by-step explanation:
Area of a parallelogram = base times height
Given area = 40
Given height = 4
Given = x + 6
Thus,
40 = 4 * (6 + x )
Step 1 distribute the 4
4 * 6 = 24
4 * x = 4x
we now have 40 = 24 + 4x
step 2 subtract 24 from each side
40 - 24 = 16
24 - 24 cancels out
now we have 16 = 4x
step 3 divide each side by 4
4x / 4 = x
16 / 4 = 4
we're left with x = 4
To check our work, we can plug in the value of x and find the area of the parallelogram then. If it equals 40 the x = 4 is true.
(x + 6) * 4
* substitute 4 for x *
(4 + 6) * 4
4 + 6 = 10
10 * 4 = 40
40 = 40
Hence x = 4
Answer: 5.46 billion
=================================================
Explanation:
If you mean the world's population, then there are roughly 7.8 billion people on earth.
70% of that is 0.70*7.8 = 5.46 billion
The number 5.46 billion can be written as 5,460,000,000
This number is read out as "5 billion, 460 million"
