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joja [24]
3 years ago
8

Find the height of the tree. FAST AS POSSIBLEEEE

Mathematics
1 answer:
Nat2105 [25]3 years ago
5 0

Answer:16

Step-by-step explanation: 3 over 4.5 = x over 24

Cross multiply and you get 4.5x=72

72/4.5= 16

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What is the factored form of the equation 2(x-1)(8x-3)=0? Which ordered pairs are solutions to the system? Check all of the boxe
vovikov84 [41]

Answer:

  The solutions to the equation are 1, 0.375.

Step-by-step explanation:

The equation is already in factored form.

The solutions to the system are the values of x that make one or the other of the factors be zero.

  x -1 = 0 . . . when x = 1

  8x -3 = 0 . . . when x = 3/8 = 0.375

There is only one variable, so no "ordered pairs" are involved.

The solutions are {1, 0.375}.

4 0
3 years ago
Read 2 more answers
Choose Yes or No to indicate whether the statement is correct.
Savatey [412]

Answer:

3rd one is no. the others are all yes

4 0
3 years ago
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An educational psychologist wishes to know the mean number of words a third grader can read per minute. She wants to make an est
nirvana33 [79]

Answer:

The 80% confidence interval for the mean number of words a third grader can read per minute is between 40.4 wpm and 40.8 wpm.

Step-by-step explanation:

We have that to find our \alpha level, that is the subtraction of 1 by the confidence interval divided by 2. So:

\alpha = \frac{1-0.8}{2} = 0.1

Now, we have to find z in the Ztable as such z has a pvalue of 1-\alpha.

So it is z with a pvalue of 1-0.1 = 0.99, so z = 1.28

Now, find M as such

M = z*\frac{\sigma}{\sqrt{n}}

In which \sigma is the standard deviation of the population and n is the size of the sample.

M = 1.28*\frac{4.1}{\sqrt{840}} = 0.2

The lower end of the interval is the sample mean subtracted by M. So it is 40.6 - 0.2 = 40.4 words per minute.

The upper end of the interval is the sample mean added to M. So it is 40.6 + 0.2 = 40.8 words per minute.

The 80% confidence interval for the mean number of words a third grader can read per minute is between 40.4 wpm and 40.8 wpm.

3 0
3 years ago
A computer code is based on the prime facttorization of 160. find the prime factorization of 160
igor_vitrenko [27]
Prime factorization of 160 = 2 x 2 x 2 x 2 x 2 x 5
3 0
3 years ago
Please help me......
MrMuchimi

Answer:

it's answer is 107

Step-by-step explanation:

firstly

x+28+45=180

x+73=180

x=180 subtract 73 = 107

5 0
3 years ago
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