Answer: The decreasing interval is
Step-by-step explanation:
Step-by-step explanation:
90*8.25=742 rounds to 675 because its the closest. 85-95=10 divided by 2=5+85=90. 9-7.5=1.5 divided by 2=0.75+7.5=8.25. thats how i got those numbers. THE ANSWER IS C
Answer:
Null hypothesis is rejected. Standard deviation is > 8 miles per hour
Step-by-step explanation:
σ [Population standard deviation] = 8 , s [sample standard deviation] = s
n [no of items] = 8
H0 [Null] : σ = 8 ; H1 [Alternate - Right Tail] : σ > 8
χ2 = (n - 1) . s^2 / σ^2
= 49 x (10.5)^2 / 82 = 5402.25 / 64
χ2 = 84.410
df [degree of freedom] = n -1 = 50 - 1 = 49
P value (χ^2 49 > 84.410) = 0.00125
p = 0.0013
p < α ie 0.05
So, H0 is rejected
Hence we state that standard deviation is > 8 miles per hpur
Answer:
Hollow-circle rightward-facing arrow with start point number 1.
Step-by-step explanation:
x/8 > 2/(3 + 2^2 + 1) * 2
Multiply both sides by 2:
x/4 > 2/(3 + 2^2 + 1)
Resolve bracket:
x/4 > 2/(3 + 4 + 1)
x/4 > 2/8
x/4 > 1/4
Multiply both sides by 4:
x > 1
To graph this on the number line, you must draw an arrow facing to the right starting from the number 1. It is important that the circle with the arrow is hollow - this is because a hollow circles means more/less than, whereas a filled circled means more/less than or equal to, and this inequality is only more than, not more than or equal to.
Answer:
See below ~
Step-by-step explanation:
<u>Question 18</u>
- Diameter = Difference in y-coordinates
- Diameter = 12 - 2 = 10
- We know : Radius = Diameter/2
- Radius = 10/2
- Radius = 5 cm
- <u>(1) 5 cm</u>
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<u>Question 19</u>
- 3x² - 34x - 24 = 0
- (3x + 2)(x - 12) = 0
- Solution set = {-2/3, 12}
- <u>(3) {-2/3, 12}</u>
