Five times a certain number plus 5 is 45
1 answer:
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(a) Truck carries 90 gallons of diesel fuel to 660 miles.
So, 1 gallon of diesel fuel to 660/90 = 22/3 miles.
30 gallons of diesel fuel to = 220 miles.
Hence, if x-axis represents the number of miles and y-axis represents the number of gallons, then, (660, 90) and (220, 30) are points on the graph.
Join (660, 90) and (220, 30), we get the graph of a line.
Note that (0, 0) is also a point on the line.
Equation of the line is .
(b) x represents the number of miles. Therefore, the possible values for x is the closed interval [0, 660].
Hence, the domain of the function is [0, 660].
(c) Origin represents that the truck is not moving and there is no diesel fuel loaded in the truck.
Data:
$50 dollars in bills → 50 coins of one dollar
<span>Estimate the mass of one dollar coin
</span>Solving:
50 coins → 405 grams
1 coin → x
<span>The rule of three
</span>
50*x = 405*1
50x = 405
We have:
$50 dollars in bills → 50 coins of one dollar
<span>Estimate the mass of one dollar coin
</span>Solving:
50 coins → 405 grams
1 coin → x
<span>The rule of three
</span>
50*x = 405*1
50x = 405
We have:
Answer:
Step-by-step explanation:
To convert an equation into standard form, we want to get into the form .
If we have , our first step is to get the x term on the left side. We can do this by subtracting 3x from both sides.
I find it easier now to just divide both sides by -1, so that we have a more consistent equation.
Hope this helped!