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rosijanka [135]
4 years ago
14

15 x squared minus 4X minus 4 ​

Mathematics
1 answer:
Murrr4er [49]4 years ago
4 0

Answer:

the answer would be 15x^2-4x-4

Step-by-step explanation:

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Need help ASAP for a Assignment
victus00 [196]

Answer:

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Step-by-step explanation:

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3 years ago
A school has two kindergarten classes. There are 21 children in Ms. Toodle's kindergarten class. Of these, 17 are "pre-readers"
Maru [420]

Answer:

Answer : D

Step-by-step explanation:

A school has two kindergarten classes. There are 21 children in Ms. Toodle's kindergarten class. Of these, 17 are "pre-readers" children on the verge of reading. There are 19 children in Mr. Grimace's kindergarten class. Of these, 13 are pre-readers. Using the plus four confidence interval method, a 90% confidence interval for the difference in proportions of children in these classes that are pre-readers is â0.104 to 0.336.  

Which of the following statements is correct?

A) This confidence interval is not reliable because the samples are so small.  

B)This confidence interval is of no use because it contains 0, the value of no difference between classes.  

C)This confidence interval is reasonable because the sample sizes are both at least 5.  

D) This confidence interval is not reliable because these samples cannot be viewed as simple random samples taken from a larger population.

The Answer is D - This confidence interval is not reliable because these samples cannot be viewed as simple random samples taken from a larger population.

In this setup, all the students are already involved in the data. This is not a sample from a larger population, but probably, the population itself.

4 0
3 years ago
The symmetry of a hyperbola with a center at (h, k) only occurs at y = k and x = h.
allsm [11]
The correct answer is false. The symmetry of a hyperbola with a center at (h, k) do not occurs only at y = k and x = h. The axis of symmetry occurs through each focus making right angles to the directrix. The axis of symmetry is a line  that divides a graph or something into two congruent figures. 
8 0
3 years ago
The explicit rule for a sequence is given.
LenaWriter [7]

Answer:

a_{1} = 1/2

a_{n} = a_{n-1} * \frac{4}{3}

Step-by-step explanation:

plug 1 into a_{n}=1/2(4/3)^n−1  to find a_{1}

=1/2(4/3)^1−1

a_{1} = 1/2 (4/3)^0

a_{1} = 1/2 * 1

a_{1} = 1/2

a_{n} = a_{n-1} * r where r is the ratio

since (4/3) is being taken to an exponent, (4/3) is r

a_{n} = a_{n-1} * \frac{4}{3}

3 0
3 years ago
Read 2 more answers
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