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brilliants [131]
3 years ago
8

PR is represented by which sketch?

Mathematics
1 answer:
solniwko [45]3 years ago
8 0

Answer:

B.

Step-by-step explanation:

The direction of the arrow has to go the same way as the one in the question, from P to R. Also, the question only has one arrow, so the answer only has one arrow.

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12-9+c=12 what value makes the equation true?
ElenaW [278]

Answer: c = 9

Step-by-step explanation:

12-9=3+9=12

3 0
3 years ago
If now Lina is three times as old as Nick, and in 6 years she will be twice as old as he, how old are they now?\
Kitty [74]

Answer:

Step-by-step explanation:

Nick's age = x years

Lina's age =3*x = 3x

After 6 years,

Lina's age = 3x + 6

Nick's age = x + 6

3x + 6 = 2*(x+6)

3x + 6 = 2*x + 2*6

3x + 6 = 2x + 12      {Subtract 6 form both sides}

3x +6 - 6 = 2x + 12 - 6

3x  = 2x + 6    {subtract 2x from both sides}

3x - 2x = 2x + 6 - 2x

x = 6

Nick's age = 6 years

Lina's age =3*6 = 18 years

8 0
3 years ago
Mathematical Statistics with Applications Help Homework
Mars2501 [29]

7.43: Let X denote the random variable for height and \overline X for the sample mean. Then if \mu is the mean of

So the probability that the difference between the sample and population means does not exceed 0.5 inch is

P(|\overline X-\mu|\le0.5) = P\left(\left|\dfrac{\overline X-\mu}{0.25}\right|\le\dfrac{0.5}{0.25}\right) = P(|Z|\le 2) \approx \boxed{0.95}

per the empirical or 68/95/99.7 rule.

7.44: For a sample of size <em>n</em>, the sample standard deviation would be \frac{2.5}{\sqrt n}. We want to find <em>n</em> such that

P(|\overline X-\mu| < 0.4) = 0.95

Comparing to the equation from the previous part, this means we would need

\dfrac{0.4}{\frac{2.5}{\sqrt{n}}} = 0.16\sqrt n = 2 \implies \sqrt n = 12.5 \implies n = 156.25

so a sample of at least 157 men would be sufficient.

7 0
3 years ago
I have no clue how to do this n it’s in f tmrw pls help lol
Fofino [41]

Area = w × h

w = width

h = height

6 0
3 years ago
Parallelogram ABCD is similar to the parallelogram EFGH. What is the length of GH? 
laiz [17]

Answer:

2 in

Step-by-step explanation:

3 0
3 years ago
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