Divide 630 by 30 then divide 798 by 42 finally divide 864 by 54 and ur answer for the sedan is :18 mpg then the minivan : 19 then the truck is :16
Answer:
C
Step-by-step explanation:
Actually, this graph shows negative association because if u look at the direction the group of dots r slanting, it is in the negative direction (down).
To be positive the group would have to be slanting upwards and to the right.
No correlation means that all the dots r in no particular direction, but everywhere and every which way.
Answer:
The height is increasing at the rate of 0.26 ft/min
Step-by-step explanation:
Explanation with steps is in the following attachment
Answer:
10.35
Step-by-step explanation:
So we solve by cross multiplication
11 pounds---------------113.85
1 pound. --------------- ?
so ?= (113.85*1) / 11
so ?=10.35
The answer is 9
u - the unit digit
t - the tenth digit
So, the original two digit number will be: 10t + u.
<span>The reversed two-digit number will be: 10u + t
</span>
Five times the sum of the digits of a two-digit number is 13 less than the original number is: 5(u + t) = 10t + u - 13
four times the sum of its two digits is 21 less than the reversed two-digit number: 4(u + t) = 10u + t - 21
Thus, we have two equations:
5(u + t) = 10t + u - 13
4(u + t) = 10u + t - 21
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Multiply the factor:
5u + 5t = 10t + u - 13
4u + 4t = 10u + t - 21
_______________
Rearrange:
5u + 5t - 10t - u = -13
4u + 4t - 10u - t = -21
_______________
4u - 5t = -13
-6u + 3t = -21
_______________
Multiply the first equation by 3, and the second by 2:
4u · 3 - 5t · 3 = -13 · 3
-6u · 2 + 3t · 2 = -21 · 2
________________
12u -15t = -39
-12u + 6t = -42
________________
Add these two equations to make one equation:
12u - 15t - 12u + 6t = -39 - 42
________________
12u can be canceled out:
-9t = - 81
________________
t = -81/-9
<span>t = 9
________________
</span>Replace t in one of the equations:
4u - 5 · 9 = -13
4u - 45 = -13
4u = -13 + 45
4u = 32
u = 32/4
<span>u = 8
</span>
Therefore, t = 9, u = 8
The original two digit number will be: 10t + u = 10·9 + 8 = 90 + 8 = 98
The reversed two-digit number will be: 10u + t = 10·8 + 9 = 80 + 9 = 89
The difference of the original two-digit number and the number with reversed digits is 98 - 89 = 9
