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3 years ago

Which of the following graphs does not represent y as a function of x

Mathematics

1 answer:

Bogdan [553]3 years ago

7 0

Answer:

what graphs a function is a et of numbers where the x doesnt

repeat

Step-by-step explanation:

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Fraction of a minute is 42 seconds

Zarrin [17]

Here is the answer. A minute consists of 60 seconds. Therefore, we can put this in a fraction form as 42/60. Since these are still large numbers, we would simplify this fraction so the answer would be 7/10. Hope this is the answer that you are looking for. Have a great day ahead!

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3 years ago

Find the angle measures in each regular polygon

erma4kov [3.2K]

Answer:

Step-by-step explanation:

jason jumped off of a cliff into the ocean in Acapulco while vacationing, ... second, then its height h after t seconds is given by the equation h(t) = -1672 ... 3. A rocket is launched from atop a 101 - foot cliff with an initial velocity of 116 ft/s. a. ... formula h(t) = -1612 + vt+s to find how long it will take for the ball to hit the ground.

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3 years ago

on average, the U.S. produces 36.5 millions tons of fruit each year. about how much fruit does it produce in 2.25 years ?

Karo-lina-s [1.5K]

I usually break it down so 2.25 is 2 1/4 so then a 36.5 million is basically 36m 1/2 36+36 is 72+1 is 73 and a 1/4 of 36 is 9 and that's it just right your answer put using the info here and it should be right if not pls let me know so I can figure out what I did wrong and try again

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3 years ago

Read 2 more answers

You have at most 8 hours to spend at a beach and at a planetarium. You want to spend more than 2 hours at the beach and at least

AlekseyPX

Answer:

x > 2

y ≥ 2

x + y ≤ 8

Step-by-step explanation:

Here, we want to write a system of equations according to the given variables

More than means, greater than

since x is the variable we want to use;

x > 2

At least 2 hours means greater than or equal to 2

That is mathematically represented as;

y ≥ 2

At most means less than or equal to

So;

x + y ≤ 8

4 0

3 years ago

A recent national survey found that high school students watched an average (mean) of 7.2 movies per month with a population sta

VladimirAG [237]

Answer:

1. Option A

2. Option D) Reject null hypothesis if z < –1.645

3. z = -4.90

4. P-value = 0.00001

Step-by-step explanation:

We are given the following in the question:

Population mean, μ = 7.2

Sample mean, $\bar{x}$ = 6.5

Sample size, n = 49

Alpha, α = 0.05

Population standard deviation, σ = 1.0

a) First, we design the null and the alternate hypothesis

$H_{0}: \mu \geq 7.2\text{ movies per month}\\H_A: \mu < 7.2\text{ movies per month}$

Option A) is the correct answer

We use one-tailed(left) z test to perform this hypothesis.

c) Formula:

$z_{stat} = \displaystyle\frac{\bar{x} - \mu}{\frac{\sigma}{\sqrt{n}} }$

Putting all the values, we have

$z_{stat} = \displaystyle\frac{6.5 - 7.2}{\frac{1}{\sqrt{49}} } = -4.90$

b) Now, $z_{critical} \text{ at 0.05 level of significance } = -1.645$

Rejection rule:

If calculated z-statistic is less than the critical z-value, we reject the null hypothesis.

Option D) Reject null hypothesis if z < –1.645

d) Now, we calculate the p-value with the help of standard normal table.

P-value = 0.00001

Since the p-value is lower than the significance level, we fail to accept the null hypothesis and reject it.We accept the alternate hypothesis.

We conclude that the college students watch fewer movies a month than high school students.

6 0

3 years ago