Answer:
3/5 c + 70 = 1650.
Step-by-step explanation:
If c is the number of calories in the cheeseburger, we can see that the entire number of calories for the meal is 3/5 c + 70 = 1650.
If we want to isolate c, we can subtract both sides by 70.
3/5 c = 1580
2x-y=32
y-5x=13
transform the second equation to make the elimination possible
2x-y=32
-5x+y=13
now, our ys match, and we can drop them out
2x-y=32
+
<u>-5x+y=13
</u> -3x+0=45
<u>x= -15
</u>
Now we use the meaning of x in one of the original equations
2*(-15)-y=32
-y=32+30
y=-62
The answer is (-15;-62)
If you need more help, please, see
http://www.domymathhomework.net/
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Step-by-step explanation:
Old Railroad Car:
- 1 day of coal in 15 hours
- 1/15 days of coal in 1 hour
New Railroad Car:
- 1 day of coal in 10 hours
- 1/10 days of coal in 1 hour
Total number of days of coal in 1 hour
= 1/15 + 1/10 = 1/6.
Since there is 1/6 days of coal in 1 hour,
there will be 1 day of coal in 6 hours.
It will take them 6 hours to transport the supply.
A straight line is 180°, so you add these two angles together because they make a straight line:
3x° + 75° = 180°
To find "x", isolate/get the variable "x" by itself in the equation. Subtract 75° on both sides
3x° + 75° - 75° = 180° - 75°
3x° = 105° Divide 3 on both sides to get "x" by itself
x = 35°
PROOF
3x° + 75° = 180° Substitute/plug in 35 into "x" since x = 35°
3(35)° + 75° = 180°
105° + 75° = 180°
180° = 180°
Answer:
$381.25
Step-by-step explanation:
15.25*25=381.25
