Geometry help please

Mathematics

1 answer:

Leokris [45]2 years ago

7 0

Opposite sides of a rectangle are congruent

QT = RS
45 = 5x - 5
50 = 5x
10 = x

D is the answer

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A process produces batches of a chemical whose impurity concentrations follow a normal distribution with a variance of175. A ran

Tom [10]

Answer:

the probability that the sample variance exceeds 3.10 is 0.02020 ( 2,02%)

Step-by-step explanation:

since the variance S² of the batch follows a normal distribution , then for a sample n of 20 distributions , then the random variable Z:

Z= S²*(n-1)/σ²

follows a χ² ( chi-squared) distribution with (n-1) degrees of freedom

since

S² > 3.10 , σ²= 1.75 , n= 20

thus

Z > 33.65

then from χ² distribution tables:

P(Z > 33.65) = 0.02020

therefore the probability that the sample variance exceeds 3.10 is 0.02020 ( 2,02%)

8 0

3 years ago

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I really really need this answer PLSSSSSSSSS

ikadub [295]

Answer: x=112

Step-by-step explanation: If you add 35 and 33 you would get 68 and if you subtract 68 from 180 you will get 112. I hope this helps!

5 0

2 years ago

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URGENT!!! The figure below shows two triangles EFG and KLM:

Ipatiy [6.2K]

Triangle EFG can also be proven to be a right triangle by using the following: D. Prove that KL is equal to c by Pythagorean Theorem.

<h3>What is the Pythagorean Theorem?</h3>

The Pythagorean theorem states that the square of the longest side of a right triangle, which is the hypotenuse (c²) equals the sum of the squares of the other two legs of the right triangle (a² + b²).

If we apply the Pythagorean theorem, we would find the length of KL. If KL has the same length as c in triangle EFG, then we can say that triangle EFG is also a right triangle.

Therefore, the answer is: D. Prove that KL is equal to c by Pythagorean Theorem.

Learn more about the Pythagorean Theorem on:

brainly.com/question/343682

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