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Brut [27]
3 years ago
10

Which interval for the graphed functions has a local minimum of 0

Mathematics
2 answers:
Mkey [24]3 years ago
5 0
(2,4) is the interval minimum for 0
Mamont248 [21]3 years ago
5 0

Answer: D) [2,4]

Step-by-step explanation:

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The claim is that the standard deviation of the speeds of drivers in Bradford is 8 mph. An experienced driver feels that this is
Irina-Kira [14]

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

6 0
4 years ago
What is 65% of 47? Please help me fast.
liubo4ka [24]
'of' in math implies that the values are being multiplied together, so multiply 47 and 65%;
47 * 65% = 47 * .65 = 30.55 
6 0
3 years ago
Consider the given right triangle. If a=20 and b=20, then angle B=
gtnhenbr [62]

Answer:

Angle B is 45°

Step-by-step explanation:

Since a and b are both of length 20, this is an isosceles right triangle, and the angle opposite side b must be 45°.

4 0
4 years ago
What are the variables<br>in <br>2x-y+4z+1?​
Black_prince [1.1K]

Answer:

X Y and Z are the variables.

Step-by-step explanation

6 0
3 years ago
Read 2 more answers
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Viktor [21]

Answer:

Step-by-step explanation:

Rate of change= slope/gradient (Constant of proportionality, slope, unit rate)

7 0
3 years ago
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