3 years ago

BRAINLIEST !!! please dont answer if you do not know it

Mathematics

1 answer:

postnew [5]3 years ago

7 0

Answer:

The answer is A.

Step-by-step explanation:

There are Four 6's, Four 4's, Seven 5's, One 2, Two 3's, Two 7's, and One 8.

Hope this helps :))

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The z-score associated with 95% is 1.96. If the sample mean is 200 and the standard deviation is 30, find the upper limit of the

ziro4ka [17]

Answer:

The upper limit of the 95% confidence interval is:

C.I_u = 200 + (58.8/ $\sqrt{n}$ )

Step-by-step explanation:

The formula is given as:

C.I = μ ± Z*σ/ $\sqrt{n}$

The upper limit => C.I_u = μ + Z*σ/ $\sqrt{n}$

The lower limit => C.I_l = μ - Z*σ/ $\sqrt{n}$

The sample size (n) is not stated in the question. Hence, we calculate the upper limit with respect to n.

The upper limit => C.I_u = 200 + 1.96*(30/ $\sqrt{n}$ )

= 200 + (1.96*30)/ $\sqrt{n}$

= 200 + 58.8/ $\sqrt{n}$

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2 years ago

Question 3: Find the vertex of - x2 - 4x + 12

tatuchka [14]

Answer:

A. (-2,16)

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2 years ago

Contestants in a dance-a-thon rest for the same amount of time every hour. A couple rests for 27 minutes In 3 hours. How long di

NeX [460]

Set up a ratio and solve for the missing value:

$\frac{27}{3} =\frac{x}{5}\\x = \frac{(27)(5)}{3}\\x = 45$

The couple rested for 45 minutes in 5 hours.

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3 years ago

If d = the number of dogs, which variable expression represents the phrase below? the sum of the number of dogs and the 6 cats A

Naya [18.7K]

Hello! :)

The sum of the number of dogs and cats.

Cats= 6

Dogs= d

It is asking for the sum. (the number added together)

d+6 or "C" is the correct answer.

~'Manda

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2 years ago

Read 2 more answers

Plz help me. will give brainliest!!

Nesterboy [21]

Answer:

1. 110

2. 84

Step-by-step explanation:

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2 years ago