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3 years ago

Find each sum.Simplify if possible

Mathematics

2 answers:

Alex Ar [27]3 years ago

8 0

Number 2 is 7 9/8 but its an improper fraction so you'll have to reduce that since im having trouble doing that.

Number 5 is 9 11/12

Hope this helps!

Dmitrij [34]3 years ago

6 0

2) 6 3/4 is = to 6 6/8 1 3/8 + 6 6/8= 8 1/8 The answer is 8 1/3 5) 3 1/4 ×3=3 3/12 6 2/3 ×4=6 8/12 3 3/12+ 6 8/12= 9 11/12 The answer is 9 11/12

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You are standing 125 ft away from the Eiffel Tower. The Eiffel Tower is 125 ft tall. Calculate the angle from you to the top of

blagie [28]

I think it would be a 45 degree angle

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3 years ago

Solve the following system of equations:

taurus [48]

3x-2y=6
6x-4y=14

Simplifying equation II
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3 0

3 years ago

A professor at a local university noted that the exam grades of her students were normally distributed with a mean of 73 and a s

Umnica [9.8K]

Answer:

88.51 is the minimum score needed to receive a grade of A.

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = 73

Standard Deviation, σ = 11

We are given that the distribution of exam grades is a bell shaped distribution that is a normal distribution.

Formula:

$z_{score} = \displaystyle\frac{x-\mu}{\sigma}$

We have to find the value of x such that the probability is 0.0793.

$P( X \geq x) = P( z \geq \displaystyle\frac{x - 73}{11})=0.0793$

$= 1 -P( z \leq \displaystyle\frac{x - 73}{11})=0.0793$

$=P( z \leq \displaystyle\frac{x - 73}{11})=0.9207$

Calculation the value from standard normal z table, we have,

$P(z \leq 1.410) = 0.9207$

$\displaystyle\frac{x - 73}{11} = 1.410\\x =88.51$

Hence, 88.51 is the minimum score needed to receive a grade of A.

3 0

3 years ago

You roll fair6-sided die what is P(roll a 2)?

creativ13 [48]

Answer:

1/6

Step-by-step explanation:

It is a 6 sided die, so you have 6 possibilities, so that is going to be you denominator.

There is only one number 2 on the die, so you have 1 as your numerator.

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4 years ago

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Answer:

Step-by-step explanation:

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