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3 years ago

15

What's the equation to find the midpoint of a right triangle?

1 answer:

Viktor [21]3 years ago

8 0

The answer is 20. You have to use the Pythagorean theorem (A^2+B^2=C^2) to find the length of the hypotenuse.

32^2+24^2=C^2
1024+576=C^2
1600=C^2
Take the square root of both sides
40=C
Since the midpoint is the middle, you divide the length of the hypotenuse by 2 and get the answer (20)

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How do you find the area of the shape?

Nata [24]

I'm pretty sure you add all the sides up together. So I think the answer to this would be 61 but I'm not 100% sure

7 0

3 years ago

Read 2 more answers

What is the conditional relative frequency of selling an item marked 50% off, provided the item sold is item 2?

sukhopar [10]

Answer:

Conditional relative frequency = 0.67

Step-by-step explanation:

50% off Buy 1, get 1 free Total

Item 1 12 8 20

Item 2 20 10 30

Total 32 18 50

Condition relative frequency table:

50% off Buy 1, get 1 free Total

Item 1 $\frac{12}{20}=0.6$ $\frac{8}{20}=0.4$ $\frac{20}{20}=1$

Item 2 $\frac{20}{30}=0.67$ $\frac{10}{30}=0.33$ $\frac{30}{30}=1$

Total $\frac{32}{50}=0.64$ $\frac{18}{50}=0.36$ $\frac{50}{50}=1$

Therefore, conditional relative frequency of selling an item marked 50% off, provided the item sold is item 2 = 0.67

8 0

3 years ago

Lifetimes of AAA batteries are approximately normally distributed. A manufacturer wants to estimate the standard deviation of th

AURORKA [14]

Answer:

95% confidence interval for the population standard deviation of the lifetimes of the batteries produced by the manufacturer.

(8.889, 11.7106)

Step-by-step explanation:

<u><em>Step(i)</em></u>:-

Given sample size 'n' = 23

Mean of the sample x⁻ = 10.3

Standard deviation of the sample (s) = 2.4

Level of significance = 0.05

Degrees of freedom = n-1 = 23-1 =22

<u><em>Step(ii)</em></u>:-

95% confidence interval for the population standard deviation of the lifetimes of the batteries produced by the manufacturer.

$(x^{-} - t_{\frac{\alpha }{2} } \frac{S}{\sqrt{n} } , x^{-} +t_{\frac{\alpha }{2} } \frac{S}{\sqrt{n} } )$

$(10.3 - t_{\frac{0.05}{2} } \frac{2.4}{\sqrt{23} } , 10.3 +t_{\frac{0.05}{2} } \frac{2.4}{\sqrt{23} } )$

(10.3 - 2.8188 (0.50043) , 10.3 + 2.8188(0.50043)

(10.3-1.4106 , 10.3+1.4106)

(8.889, 11.7106)

<u><em>final answer</em></u>:-

95% confidence interval for the population standard deviation of the lifetimes of the batteries produced by the manufacturer.

(8.889, 11.7106)

8 0

3 years ago

Plot the set of data in three different ways: a dot plot, a histogram, and a box plot: 2, 9, 5, 12, 34, 9, 5, 5, 3, 12, 14, 3.

zhuklara [117]

Answer:

huh

Step-by-step explanation:

6 0

3 years ago

Please help I’m struggling image below I will mark Brainly

ludmilkaskok [199]

Answer:

5/6

Step-by-step explanation:

The x access is on 5
The y access is on 6
Put them together: 5/6

I'm not sure if this is correct, but I still hope this helps!

3 0

3 years ago