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3 years ago

13

What is the least number of congruency statements needed to be stated in a triangle congruency proof to prove triangles are cong

ruent?
really not sure what the answer is

1 answer:

amm18123 years ago

6 0

Answer:

3

Step-by-step explanation:

The answer should be 3? Geometry.

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Evaluate the expression Z/8, or z 8 for each of the following values for Z:

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Answer:

huh

Step-by-step explanation:

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3 years ago

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Which fraction is closest to 0.39 <br> 1/3, 2/5, 3/8, 9/25

Rom4ik [11]

Answer: 2/5 is the closest one.

Step-by-step explanation:

1/3 (0.333,,,) is 0.05666... away from 0.39 .

2/5 (0.4) is 0.01 away .

3.8 (0.375) is 0.015 away .

9/25 (0.36) is 0.3 away .

2/5 is the closest one.

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polynomial formula with a degree of 7 and has roots 1,4,-1. at zero of 1 the graph is tangent, at the zeroes of 4 and -1 the gra

svlad2 [7]

Formula degree of 7 = 78

8 0

3 years ago

The following random sample was selected from a normal distribution: 4.5, 6.4, 2.3, 1.8, 5.3, then the 95% confidence interval t

kap26 [50]

Answer:

the 95% confidence interval to estimate the population mean is between 1.62 and 6.50

Step-by-step explanation:

given data

distribution = 4.5, 6.4, 2.3, 1.8, 5.3

so n = 5

confidence interval = 95%

to find out

the population mean is between

solution

first we calculate the mean i.e.

mean = $\frac{1}{n}\sum_{i=1}^{n}x(i)$

mean = 4.5+ 6.4+ 2.3+ 1.8+ 5.3 / 5

mean = 4.06

now we calculate the standard deviation i.e.

standard deviation = $\sqrt{\frac{1}{n-1}\sum (x(i)-mean)^2}$

standard deviation = $\sqrt{\frac{1}{5-1}\sum (x(i)-mean)^2}$

standard deviation = $\sqrt{\frac{1}{5-1} (4.5-5)^2+(6.4-5)^2 +(2.3-5)^2+(1.8-5)^2+(5.3-5)^2}$

standard deviation = $\sqrt{\frac{1}{4} (4.5-5)^2+(6.4-5)^2 +(2.3-5)^2+(1.8-5)^2+(5.3-5)^2}$

standard deviation = 2.226544

so 95 % confidence interval is i.e. mean +/- t(5) * standard deviation/ $\sqrt{n}$

here t(5) will be 2.45

so

95 % confidence interval= 4.06 +/- 2.45 * 2.226 / $\sqrt{5}$

95 % confidence interval= 1.62 and 6.50

4 0

3 years ago

If 6 – 2x – 8x = 16, then 5x = ?<br> a. 10<br> b. -2<br> c. -1<br> d. -5

Archy [21]

6 - 10x = 16
-10x = 10, x = -1
5(-1) = -5
The answer is d

7 0

3 years ago