Theres not really enough information to work from here. Is there anymore to this problem???
5(7x - 15) + 2x ≥ 13x - 3 <em>multiplied both sides by 2 to clear the denominator</em>
35x - 75 + 2x ≥ 13 x - 3 <em>distributed 5 into 7x-15</em>
37x - 75 ≥ 13x - 3 <em>added like terms (35x and 2x)</em>
24x - 75 ≥ -3 <em>subtracted 13x from both sides</em>
24x ≥ 72 <em>added 75 to both sides</em>
x ≥ 3 <em>divided both sides by 24</em>
Answer: x ≥ 3 Notation: [3, ∞)
Answer:
c) Statement i) is correct
Step-by-step explanation:
Experiment designed to compare relief from hay fever symptoms, by a low or high dose of a drug or placebo, with different hay fever patient volunteers given 3 different treatments (with sufficient gap) :
If the properly randomised experiment design reveals statistical difference between treatments - It states that study concludes, treatments have significantly different impacts on hay fever symptoms, & so treatment is the cause of the difference in hay fever symptoms. (i)
However, it doesn't necessarily state that these study results can be generalized to the population of all hay fever sufferers. (ii)
Rational is the number that cam be represented by an ordinary fraction, as:
2/5
0.6
1.3333....
Irrational is the number that cannot be represented by an ordinary fraction. It have infinity decimals after decimal point and it is non-periodic, as
0,01001000100001...
If we were to draw a best fit line, the y-interest would be near 15, and the slope would be negative.
In the options given, the slope is either -3 or -13. If we imagine a line through the plotted points, the rise would be about 15 while the run would be about 5. This means the slope is about -3.
The best answer is y = -3x + 15