The correct answer is 4p+1. hope this helps...Hit that thanks button!!
Answer:
ī=80; s = 10
Step-by-step explanation:
When the standard deviation is from a finite group it is denoted by s. The number of transactions from an atm are countable in a day. So the standard deviation will be represented by s.
and ī represents the mean.
The other choices are incorrect because mean is usually represented by a bar over the alphabet such as x.
a simple alphabet does not denote the mean of the sample or population.
Answer:
The answer is -1 or 9
The quadratic equation is ax² + bx + c = 0. But, by completing the square we turn it into: a(x + d)² + e = 0, where:
d = b/2a
e = c - b²/4a
Our quadratic equation is x² - 8x = 9, which is after rearrangement:
x² - 8x - 9 = 0
So, a = 1, b = -8, c = -9
Let's first calculate d and e:
d = b/2a = -8/(2 * 1) = -8/2 = -4
e = c - b²/4a = -9 - (-8)²/(4 * 1) = -9 - 64/4 = -9 - 16 = -25
By completing the square we have:
a(x + d)² + e = 0
1(x + (-4))² + (-25) = 0
(x - 4)² - 25 = 0
(x - 4)² = 25
⇒ x - 4 = √25
Since √25 can be either -5 or +5 , then:
x - 4 = -5 or x - 4 = 5
x = -5 + 4 or x = 5 + 4
x = -1 or x = 9
Step-by-step explanation:
1. 1.5x < = 51
x < = 51/1.5
x < = 34
2. 2.50x < = 20
x < = 20/2.5
x < = 8
3. x/5 < = 4
x < = 4 * 5
x < = 20...the maximum would be $ 20
4. not sure how to make this into an inequality...it looks like an equation.
13/(3 1/4) = x
13 / (13/4) = x
13 * 4/13 = x
4 = x...she can make 4 batches
5. cant see all of it....cant see how many pictures she wants framed
6. 5L < 55
L < 55/5
L < 11...
7. 4h > = 100
h > = 100/4
h > = 25 hrs babysitting
8. x + 125 + 20 < = 180
x + 145 < = 180
x < = 180 - 145
x < = 35 minutes listening to music
