So we have
which, as the above manipulation showed, is equivalent to
Answer:
The correct answer is the first solution set.
Step-by-step explanation:
If we substitute -20 into the equation we get
-20+17≤-3
-3≤-3
So,the inequality is right.
We can check the second one
14+17≤-3
31≤3 The inequality is false.
We can check the last one
-20+17≤-3
-3≤3 It works however there is a difference between the first one and the last one and that is the sign.For the first one there x≤-20 meaning the greatest number x can be is -20.For the last one x≥-20 which means -20 is the least value x can be.
If we substitude -21 into the equation we get
-21+17≤-3
-4≤-3
The inequality is false because -4 is not smaller than -3.
So,the right answer is the first solution set.
<h2>
P(E) = 
or, 0.6092</h2>
Step-by-step explanation:
Given,
There are 348 identical plastic chips numbered 1 through 348 in a box.
To find, the probability of reaching into the box and randomly drawing a chip number which is smaller than 213 = ?
Total number of possible outcomes = 348
Let E be the event of getting randomly drawing a chip number that is smaller than 213.
Favourable outcomes are:
1, 2, 3, .............., 212
Number of favourable outcomes = 212
∴ Probability =
P(E) =
= or, 0.6092
Thus, P(E) = or, 0.6092
Answer:
<h2>18.15</h2>
Step-by-step explanation:
Add what they say to add. The first equation they give you is the answer.
X^4=256
x^4-256=0
(x^2)^2-(16)^2=0
(x^2+16)(x^2-16)=0
either x^2+16=0
it gives complex roots.
or x^2-16=0
or x^2-4^2=0
(x+4)(x-4)=0
either x+4=0,x=-4
or x-4=0
x=4
