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4 years ago

Oliwia made a scale copy of the following triangle she used a scale factor greater than 1 whats the height

Mathematics

1 answer:

Mariana [72]4 years ago

8 0

Answer:

Is this the complete question? is there a figure for this?

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6.6.1. Rao (page 368, 1973) considers a problem in the estimation of linkages in genetics. McLachlan and Krishnan (1997) also di

ikadub [295]

Answer:

Step-by-step explanation:

find attached the solution

7 0

3 years ago

To qualify for a police academy, candidates must score in the top 10% on a general abilities test. The test has a mean of 200 an

kolbaska11 [484]

Answer:

z = 1.28 < a - 200/20

And if we solve for a we got

a = 200 + 1.28 * 20 = 225.6

So the value of height that separates the bottom 90% of data from the top 10% is 225.6.

Step-by-step explanation:

Let X the random variable that represent the scores of a population, and for this case we know the distribution for X is given by:

X ~ N (200,20)

For u = 200 and o = 20

For this case we can use the z score in order to solve this problem, given by this formula:

Z = x-u/o

For this part we want to find a value a, such that we satisfy this condition:

P (X > a) = 0.1 (a)

P (X < a) = 0.9 (b)

Both conditions are equivalent on this case. We can use the z score again in order to find the value a.

As we can see on the figure attached the z value that satisfy the condition with 0.9 of the area on the left and 0.1 of the area on the right it's z=1.28. On this case P(Z<1.28)=0.9 and P(z>1.28)=0.1

If we use condition (b) from previous we have this:

P ( X < a) = P (X-u/o < a - u/o) = 0.9

P (z < a-u/o) = 0.9

But we know which value of z satisfy the previous equation so then we can do this:

z = 1.28 < a - 200/20

And if we solve for a we got

a = 200 + 1.28 * 20 = 225.6

So the value of height that separates the bottom 90% of data from the top 10% is 225.6.

3 0

3 years ago

Find the value of x (4x+7) 97 (17x+13)

zysi [14]

Answer:

4x^2 +1656x + 1261

Step-by-step explanation:

X multiply by 4x is 4x^2 (4x squared)

x multiply by 7 is 7x

4x^2+7x

97 x 17x is 1649x

97 x 13 is 1261

1649x+1261

4x^2 + 7x + 1649x + 1261

1649x + 7x is 1656x

4x^2 +1656x + 1261

4 0

2 years ago

Read 2 more answers

The formula A=P(1+r)t is used to show the total amount owed for a loan with a simple annual interest rate.

vodka [1.7K]

We are asked to express r in terms of A, P, and t.

We first divide both sides of the equation by t, which gives us

$\displaystyle{ \frac{A}{t}=P(1+r)$ ,

then, dividing both sides by P, we have

$\displaystyle{ \frac{A}{Pt}=1+r$ .

Swap the sides:

$\displaystyle{ 1+r= \frac{A}{Pt}$

Finally subtracting 1 from both sides gives us

$\displaystyle{ r=\frac{A}{Pt}-1$ .

5 0

3 years ago

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Write the following phrase as an algebraic expression. Use n for “a number.”

saveliy_v [14]

“Increased” signifies addition, while quotient is division. Since n and 2 are grouped together by the word “and”, you can infer that they will be divided and 3 will be added to that value.

5 0

3 years ago

Read 2 more answers