If you are buying 32 copies of a book and each copy costs 12.34 you should multiply $12.34 by the amount of copies being bought in this case 32 so
12.34x32= 394.88
The total cost of the books is $394.88
"Goes downwards from left to right" is basically saying that the slope of this line is negative. We go downhill from left to right.
y = 2x+5 has a positive slope because m = 2 is the slope (b = 5 is the y intercept)
So choice A is out
Similarly choice B is eliminated as well because the slope is also m = 2
Choice C is false as well. The slope here is m = 2 (think of y = 2x as y = 2x+0)
The only choice with a negative slope is choice D. The slope is m = -2
This is why the answer is choice D
Side Note: I'm using slope intercept form y = mx+b where m is the slope and b is the y intercept
Answer: C. 0.3
Step-by-step explanation:
<em>To convert 1/3 so you can write it as a decimal, simply divide the numerator by the denominator, like this:</em>
<em></em>
<em>= 1/3</em>
<em>= 1 ÷ 3</em>
<em>≈ 0.3333333</em>
<em></em>
<em>Therefore, the solution to 1/3 as a decimal is as follows:</em>
<em></em>
<em>1/3 ≈ 0.3333333</em>
To get the solution, we are looking for, we need to point out what we know.
<span>1. We assume, that the number 42.5 is 100% - because it's the output value of the task. </span>
<span>2. We assume, that x is the value we are looking for. </span>
<span>3. If 42.5 is 100%, so we can write it down as 42.5=100%. </span>
<span>4. We know, that x is 76.8% of the output value, so we can write it down as x=76.8%. </span>
5. Now we have two simple equations:
1) 42.5=100%
2) x=76.8%
where left sides of both of them have the same units, and both right sides have the same units, so we can do something like that:
42.5/x=100%/76.8%
6. Now we just have to solve the simple equation, and we will get the solution we are looking for.
7. Solution for what is 76.8% of 42.5
42.5/x=100/76.8
<span>(42.5/x)*x=(100/76.8)*x - </span>we multiply both sides of the equation by x
<span>42.5=1.30208333333*x - </span>we divide both sides of the equation by (1.30208333333) to get x
<span>42.5/1.30208333333=x </span>
<span>32.64=x </span>
x=32.64
<span>now we have: </span>
<span>76.8% of 42.5=32.64</span>
The amount eroded at millimetre per hour is 0.002283
In order to determine the answer, take the following steps :
1. determine how many hours are in a year
there are 24 hours in a day
There are 365 days in a year
Number of hours in a year = number of days in a year x number of hours in a day
24 x 365 = 8760 hours
2. convert centimetre to millimetre
1 cm = 10mm
2cm x 10 = 20mm
3. Amount eroded per hour in millimetres = amount eroded per year / total number of hours in a year
20 / 8760 = 0.002283 millimetre / hour
To learn more, please check : brainly.com/question/13118179?referrer=searchResults
