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3 years ago

PROOF ‼️ASAP!!! BRAINLIEST!!‼️ PLS HELP + EXPLAIN!!! Thx! (NO LINKS PLEASE)

Mathematics

1 answer:

ElenaW [278]3 years ago

7 0

Step-by-step explanation:

1) m∠1 = m∠4, m∠2 = m∠3 (1) Given

2) m∠AFC = ∠1 + ∠2 (2) Angle Addition Postulate

3) m∠EFC = ∠3 + ∠4 (3) Angle Addition Postulate

4) m∠EFC = ∠1 + ∠2 (4) Substitution

5) m∠AFC = m∠EFC (5) Transitive Property

Thnk you

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Supposethat z is a normally distributed variable with variance 4. You collect a sample of size n for which you get a sample aver

Nikitich [7]

Answer:

The sample size is 4

Step-by-step explanation:

Null hypothesis: The mean is 2

Alternate hypothesis: The mean is less than 2

Mean = 3

sd = sqrt(variance) = sqrt(4) = 2

At 95% confidence level, t-value is 1.960

Assuming the lower bound of the mean is 1.04

Lower bound = mean - (t×sd/√n)

1.04 = 3 - (1.96×2/√n)

3.92/√n = 3 - 1.04

3.92/√n = 1.96

√n = 3.92/1.96

√n = 2

n = 2^2

n = 4

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3 years ago

You have a jar of marbles in front of you with

andreev551 [17]

11/17 for not blue, 6/17 for blue

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4 years ago

Which expression has the same value as 15+24

lakkis [162]

15+24= put it in the calculator u will find the answer(hope this helped)

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3 years ago

Read 2 more answers

Which statements must be true? Select each correct answer

kupik [55]

Answer:

Options (1), (3) and (5)

Step-by-step explanation:

By the property of midsegment,

Segment joining midpoints of two sides of a triangle measures the half of the third side of the triangle and midsegment is parallel to the third side.

Since, points U, V and W are the midpoints of the sides JK, KL and LJ,

UW = $\frac{1}{2}(KL)$

UV = $\frac{1}{2}(JL)$

VW = $\frac{1}{2}(JK)$

UV ║ JL

UW ║ KL

VW ║JK

Therefore, options (1), (3) and (5) are true.

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3 years ago

a student is reading a fictional book at about 300 words per a minute. convert this rate to words per second

NeTakaya

300words/min
1min= 60 secs
300words/60secs= 5
5words/second is your answer

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3 years ago