Answer:
a=-2
b=3
c=5
Step-by-step explanation:
I assume you want us to solve for te values of a, b, and c
since the last equation has eliminated b, we will eliminate b in the other 2 equations to solve
-3a-4b+2c=28
a+3b-4c=-31
eliminate b
lcm of 3 and -4 is -12 because that's math
multiply first equation by 3 and 2nd by 4 to get
-9a-12b+6c=84
4a+12b-16c=-124
add the equations together
-9a-12b+6c=84
<u>4a+12b-16c=-124 +</u>
-5a+0b-10c=-40
-5a-10c=-40
divide both sides by -5
a+2c=8
now compare this to the 3rd equation
a+2c=8 and 2a+3c=11
eliminate a from both equations
multiply first equation by -2
-2a-4c=-16
add this to other equation
-2a-4c=-16
<u>2a+3c=11 +</u>
0a-c=-5
-c=-5
c=5
subsitute back
a+2c=8
a+2(5)=8
a+10=8
a=-2
subsitute way back to find b
a+3b-4c=-31
-2+3b-4(5)=-31
-2+3b-20=-31
3b-22=-31
3b=9
b=3
a=-2
b=3
c=5
Answer:
the order is -1, 0, 1/2, 1.7
So remember that percent means parts out of 100 so
52%=52/100=0.52
26%=26/100=0.26
'of' means multily
0.52 times x=65
divide both sides by 00.52
x=125
26% of a number is 39
0.26 times y=39
divide both sides by 0.26
y=150
x=125
y=150
y is greater
you know that becuase we know that 52% is exatly twice of 26% so therefor, if x=y then 52% of x is half of 26% of y so to compare them, we just divide the 65 number by 2 to find 26% of that number to get 65/2=32.5
32.5<39 so x is smaller number
Answer:
just add all the numbers
Step-by-step explanation:
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Answer:
Step-by-step explanation:
The truck's fuel consumption is:
660 miles
---------------- = 7.33 miles per gallon.
90 gallons
Draw a set of coordinate axes, with # of gallons on the horiz. axis and distance traveled on the vertical axis. Place a black dot at (0,0). Starting at (0,0), draw in scale divisions that can accommodate 0-100 gallons. Mark scale divisions on the vertical axis such that the maximum distance traveled is 800 miles. Now draw a vertical line through 90 gallons and a horizontal line through 660 miles. Draw a black dot where these two lines intersect. Now draw a straight line through (0,0) and (90,660). These two points are your intercepts, horiz. first and vert. second.
The domain is the set of numbers on the horiz. axis for which you have a graph (meaning that your function is defined). Here your domain is
[0,90] gallons. No function is defined for less than 0 gallons or more than 90 gallons.
The origin represents no fuel yet consumed and no distance yet traveled.