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3 years ago

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The function f(x) = –0.3(x – 5)2 + 5 is graphed. What are some of its key features? Check all that apply. The axis of symmetry i

s x = 5. The domain is {x| x is a real number}. The function is increasing over (–∞, 5). The minimum is (5, 5). The range is {y| y ≥ 5}.

1 answer:

kompoz [17]3 years ago

4 0

Answer:

The answer is option 1 , 2 and 3 or A , B and C

Step-by-step explanation:

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Is the mean age at which American children learn to walk less than 15 months? A study of 40 American children found a mean walki

Sonbull [250]

Answer:

We define the random variable X as the walking age and we are interested if American children learn to walk less than 15 months so then that would be the alternative hypothesis and the complement would be the null hypothesis.

Null hypothesis: $\mu \geq 15$

Alternative hypothesis: $\mu$

And for this case the best answer would be:

H 0 : μ ≥ 15 vs. Ha : μ < 15

Step-by-step explanation:

We define the random variable X as the walking age and we are interested if American children learn to walk less than 15 months so then that would be the alternative hypothesis and the complement would be the null hypothesis.

Null hypothesis: $\mu \geq 15$

Alternative hypothesis: $\mu$

And for this case the best answer would be:

H 0 : μ ≥ 15 vs. Ha : μ < 15

And the data given from the sample is:

$\bar X = 13.2$ represent the sample mean

$\sigma$ represent the population deviation

$n = 40$ represent the sample size

And the statistic would be given by:

$z = \frac{\bar X -\mu}{\frac{\sigma}{\sqrt{n}}}$

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3 years ago

The coordinates of point A are (6, 2). The coordinates of point B are (2, 6). AB¯¯¯¯¯is transformed to form A′B′¯¯¯¯¯¯¯, shown

postnew [5]

Answer:

AB¯¯¯¯¯ is reflected across the y- axis to form A′B′¯¯¯¯¯¯¯ .

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3 years ago

your school is planning to bring 193 students to watch the competition cheerleaders perform in hershey. there are eight drivers

Vinil7 [7]

Answer:

7 buses

Step-by-step explanation:

51 divided by 8 = 6 and you still have 3 students letf so you have to use one more bus

5 0

3 years ago

The sum of one-third of a number and three-fourths of the number exceeds that number by one. Which equation could be used to fin

Marrrta [24]

$\frac{n}{3} + \frac{3n}{4} = n+1 
$
$4n + 9n = n+1$
$13n = n+1$
$13n-n = 1$
$12n = 1$

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3 years ago

Read 2 more answers

A box weighs 23.7 pounds. Another box weighs 6.91 pounds. What is the combined weight of the two boxes? Draw and label a bar dia

Sophie [7]

Answer:

30.61

Step-by-step explanation:

<h3>Add</h3><h3></h3><h3>23.7+6.91=30.61</h3><h3 /><h3>hope this helped!=)</h3>

8 0

4 years ago