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3 years ago

If a:b=2:3 b:c=4:5 and c:d=6:7 find a:d

Mathematics

1 answer:

Studentka2010 [4]3 years ago

7 0

Hope it is useful!!....

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drug sniffing dogs must be 95% accurate in their responses because their handlers don't want them to miss durgs and also don't w

GenaCL600 [577]

Answer:

95% Confidence interval: (0.8449,0.9951)

Step-by-step explanation:

We are given the following in the question:

Sample size, n = 50

Number of times the dog is right, x = 46

$\hat{p} = \dfrac{x}{n} = \dfrac{46}{50} = 0.92$

95% Confidence interval:

$\hat{p}\pm z_{stat}\sqrt{\dfrac{\hat{p}(1-\hat{p})}{n}}$

$z_{critical}\text{ at}~\alpha_{0.05} = 1.96$

Putting the values, we get:

$0.92 \pm 1.96(\sqrt{\dfrac{0.92(1-0.92)}{50}})\\\\ = 0.92\pm 0.0751\\\\=(0.8449,0.9951)$

(0.8449,0.9951) is the required 95% confidence interval for the proportion of times the dog will be correct.

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3 years ago

What’s the answer?????? #10

Marizza181 [45]

Answer:

1024 or A

Step-by-step explanation:

64 x4 is 256 x4 it's a 1024

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2 years ago

Help Me! ASAP! Determine whether each equation has no solution, one solution or infinitely many solutions. Choose No Solution, O

ladessa [460]

Answer:

Step-by-step explanation:

(1). One solution

(2). Infinitely Many Solutions

(3). One solution

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3 years ago

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The function g(x) is the inverse of the function f (x) = (x + 1)2 + 2, when x < -1

kondaur [170]

9514 1404 393

Answer:

g(x) = -√(x -2) -1

Step-by-step explanation:

We note the domain of f(x) is x ≤ -1. The is the range of the function g(x).

The inverse function is the solution to ...

x = f(y)

x = (y +1)² +2

x -2 = (y +1)²

-√(x -2) = y +1 . . . . . . . we are interested only in the negative values

y = -√(x -2) -1

The inverse function is ...

g(x) = -√(x -2) -1

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3 years ago

Which theorem or postulate proves the two triangles are similar?

Papessa [141]

Answer:

sss i think

Step-by-step explanation:

uh im not 100% sure

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4 years ago

If a:b=2:3 b:c=4:5 and c:d=6:7 find a:d​

If a:b=2:3 b:c=4:5 and c:d=6:7 find a:d