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Ket [755]
3 years ago
15

Solve for x and y.

Mathematics
2 answers:
Elodia [21]3 years ago
6 0

Answer:

x = 24 , y = 8√3 .

Step-by-step explanation:

Given : 30- 60- 90 angled triangle.

To find : Solve for x and y.

Solution : We have given : opposite angle = y

Hypotenuses = 16√3.

Adjacent side = x.

By the 30- 60- 90 angled triangle rule : Adjacent side is √3 times of opposite side and hypotenuses is 2 times of opposite side,

Then ,

Hypotenuses = 2 * opposite side.

Plug hypotenuses = 2√3.

16√3 = 2 * y .

On dividing  by 2 both sides.

8√3 = y.

Adjacent side = √3 * opposite side.

x = √3 * y

x = √3 * 8√3 .

x = 8 * 3

x = 24.

Therefore, x = 24 , y = 8√3 .

Rus_ich [418]3 years ago
5 0

y is 8\sqrt{3}. This is because in a 30-60-90 triangle, the side facing the 30° is always half of the side facing the 90°


x is always √3 times y, so x=24. Therefore, the answer is the second answer choice.


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A study sampled 350 upperclassmen (Group 1) and 250 underclassmen (Group 2) at high schools around the city of Houston. The stud
iris [78.8K]

Answer:

-0.048

Do not reject  H_0:P_1-P_2=0

Step-by-step explanation:

From the question we are told that

Sample size n_1=350

Sample size n_2=250

Sample proportion 1  \hat P= \frac{25}{350} =>0.07

Sample proportion 2 \hat P= \frac{19}{250} =>0.076

95% confidence interval

Generally for 95% confidence level

Level of significance

 \alpha = 1-0.95=>0.05

 \alpha /2=\frac{0.05}{2} =>0.025

Therefore

Z_a_/_2=1.96

Generally the equation for confidence interval between P_1 - P_2  is mathematically given as

(\hat P_1-\hat P_2)\pm Z_a_/_2\sqrt{\frac{\hat P_1(1-\hat P_1)}{n_1}+\frac{\hat P_2(1-\hat P_2)}{n_2}  }

(0.07-0.076)\pm 1.96\sqrt{\frac{0.07(1-0.07)}{350}+\frac{0.076(1-0.076)}{250}  }

(0.07-0.076)\pm 1.96\sqrt{4.66896*10^-^4  }

(-0.006)\pm 0.042

(-0.006)- 0.042=>-0.048

(-0.006)+ 0.042=>0.036

Therefore

Confidence interval is

-0.048

Conclusion

Given the confidence interval has zero

Therefore do not reject  H_0:P_1-P_2=0

6 0
2 years ago
What is the width of a rectangle with an area of 5/8in2 and a length of 10 inches
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Hope this helps :)

3 0
3 years ago
Pleeeeeeeaaaseee help. I need to find the exterior angle measurement. I will mark brainliest
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Answer:

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Step-by-step explanation:

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lets call the unknown angle  in the triangle y

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solve this for y by subtracting 2a from each side

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y = 180 -2a

now we can substitute this into the triangle equation

a+10 + y + 44 = 180

a+10 + 180 -2a + 44 = 180

combine like terms

-a +234 = 180

subtract 234 from each side

-a = --54

divide each side by -1

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