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bulgar [2K]
2 years ago
12

Suppose y varies inversely as x, and y = 16 when x = 1/2. Find y when x = 17.

Mathematics
1 answer:
MArishka [77]2 years ago
5 0

<u>Finding the proportionality constant</u> :

  • y = k/x
  • 16 = k/(1/2)
  • <u>k = 8</u>

<u>Finding y when x = 17</u> :

  • y = 8/(17)
  • y = 8/17

The value of y is <u>8/17</u> when x = 17.

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A social psychologist conducts an experiment and finds a statistically significant result. This means that the a. experiment is
coldgirl [10]

Considering that the hypothesis test found an statistically significant result, it is found that the correct option is:

c. probability of obtaining this finding by chance alone is less than some quantity.

<h3>What is an hypothesis test?</h3>
  • When a hypothesis test, there are two hypothesis, the null and the alternative hypothesis.
  • There is also a significance level.
  • If the probability of obtaining the finding by chance is less than the significant value, the result is statistically significant.

Hence, according to these bullet points, option C is correct.

You can learn more about hypothesis tests at brainly.com/question/16313918

7 0
3 years ago
A plane flew 360km in 3 hrs when flying with the wind.With no change in the wind,the return trip took 4 hrs.Find the speed of th
morpeh [17]
Speed of the plane: 250 mph
Speed of the wind: 50 mph
Explanation:
Let p = the speed of the plane
and w = the speed of the wind
It takes the plane 3 hours to go 600 miles when against the headwind and 2 hours to go 600 miles with the headwind. So we set up a system of equations.
600
m
i
3
h
r
=
p
−
w
600
m
i
2
h
r
=
p
+
w
Solving for the left sides we get:
200mph = p - w
300mph = p + w
Now solve for one variable in either equation. I'll solve for x in the first equation:
200mph = p - w
Add w to both sides:
p = 200mph + w
Now we can substitute the x that we found in the first equation into the second equation so we can solve for w:
300mph = (200mph + w) + w
Combine like terms:
300mph = 200mph + 2w
Subtract 200mph on both sides:
100mph = 2w
Divide by 2:
50mph = w
So the speed of the wind is 50mph.
Now plug the value we just found back in to either equation to find the speed of the plane, I'll plug it into the first equation:
200mph = p - 50mph
Add 50mph on both sides:
250mph = p
So the speed of the plane in still air is 250mph.
6 0
3 years ago
Please helpppppppppp<br> include step by step
balandron [24]

Answer:

507

Step-by-step explanation:

As they said, I will be using 3 as pi.

3 (pi) * (\frac{26}{2})^2 (radius squared)

Without annotations: 3*\frac{26}{2}^2

3*\frac{26}{2}^2

3*13^2; 13*13=169

3*169

507



5 0
2 years ago
Help its for math will give brainly Find the area of the hexagon.
borishaifa [10]

Answer:

the area of the hexagon is 68 cm²

Step-by-step explanation:

Let us observe the image a little, we can find the area of the hexagon equals to the area of the large rectangle minus 4 small triangles surrounding the hexagon. The area of the rectangle is 8 × 12 is 96 cm². The area of 1 small triangle is 4 × 3.5 ÷ 2 = 7, there are 4 triangles, so the total area is 4 × 7 = 28. So the hexagon's area is 96 - 28 = 68 cm²

Hope this will help❤️

3 0
3 years ago
Someone help I don't get it
Gemiola [76]
The answer is the first choice. 
6 0
3 years ago
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