C. 5
Step-by-step explanation:
The coeff of
Is 15.
So by that we can write 3m = 15
m is 5.
We can calculate the speed to be
.. (36 mi)(0.75 h) = 48 mi/h
or we can just assume that is what it is based on the fact that 48 is the only number in any of the offered answers.
distance = speed * time
.. y = 48 * x . . . . . . . . . . . . . . . . corresponds to selection A
_____
There is no question 17.
_____
15. All sections of the graph are linear. All sections except Q show the function increasing (left to right, which is how we talk about it). Thus selection B is the only sensible one.
Answer:
11 cm
just find the ½ of the circumference of the full circle
Hey there, first, we simplify, 3/4x+3=27, second, subtract 3 from both sides, 3/4x+3-3=27-3=3/4x=24, third, multiply both sides by 4/3, 4/3*3/4x=4/3*24=32. Therefore, x=32
Number of jobs=1
Time:
<span>Since ‘x’ is given as a variable in the choices, we should reserve it for Kate and use ‘y’ for Jean as follows: </span>
<span>
Kate: => x </span>
<span>Jean: => y </span>
<span>But y = x - 5 </span>
<span>Combined rate: </span>
<span>1/x+ 1/y </span>
<span>= (x + y)/(xy) </span>
<span>Number of jobs done: </span>
<span>
Number of days X combined rate = number of jobs </span>
<span>6 [(x + y)/(xy)] = 1 </span>
<span>6x + 6y = xy </span>
<span>6x + 6(x - 5) = x(x - 5) </span>
<span>6x + 6x - 30 = x² - 5x </span>
<span>12x - 30 = x² - 5x </span>
<span>x² - 17x + 30 = 0
</span>
Therefore, the answer would be A.
