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2 years ago

Please help

Mathematics

2 answers:

elena-14-01-66 [18.8K]2 years ago

8 0

Brainly is so proper why is no one saying inappropriate things?

Paladinen [302]2 years ago

8 0

Answer:

Step-by-step explanation:

You might be interested in

Z = b + a + m , for a

Lady bird [3.3K]

Answer:

$z = b +a + m \\ a = z - b - m$

I hope I helped you^_^

7 0

3 years ago

on january 1,1999,the price of gasoline was$1.39 per gallon .if the price of gasoline increased by 0.5%per month ,what was the w

arlik [135]

$P(t)=1.39.(1.005)^t \ \ \ \ where t \ is \ time \ in \ months\\
\\
P(1)=1.39.(1.005)^1\\
\\
P(1)=1.39*1.005\\
\\
P(1)=\$ \ 1.40$

4 0

4 years ago

5 1/2 - 3/8 Enter your answer as a mixed number in its simplest form Pweeese

juin [17]

5 1/2 - 3/8

Make 5 1/2 into a improper fraction

5 1/2=11/2. Mutiply the whole number with the denominator. 5*2= 10. Add 10 with the numerator. 10+1= 11

11/2-3/8.

Find the common denominator for 11/2 which is 8. Mutiply by 4

11(4)/2(4)= 44/8

44/8-3/8= 41/8= 5 1/8

Answer: 41/8 or 5 1/8

5 0

3 years ago

Private nonprofit four-year colleges charge, on average, $27,293 per year in tuition and fees. The standard deviation is $7,235.

Natali5045456 [20]

Answer:

a) $X\sim(27293,(7235)^2)$

b) 0.1567

c) $P_{70}=31084.14$

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = $27,293 per year

Standard Deviation, σ = $7,235

We are given that the distribution of cost of college is a bell shaped distribution that is a normal distribution.

a) Distribution of X

Let X be the cost for a randomly selected college. Then,

$X\sim (\mu, \sigma^2)\\X\sim(27293,(7235)^2)$

b) Probability that a randomly selected Private nonprofit four-year college will cost less than $20,000 per year.

$P( x < 20000) = P( z < \displaystyle\frac{20000 - 27293}{7235}) = P(z < -1.008)$

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

$P(x < 20000) = 0.1567$

c) 70th percentile for the distribution.

We have to find the value of x such that the probability is 0.7

$P( X < x) = P( z < \displaystyle\frac{x - 27293}{7235})=0.7$

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

$\displaystyle\frac{x - 27293}{7235} = 0.524\\\\x = 31084.14$

The 70th percentile for the distribution of college cost is $31,084.14

4 0

3 years ago

How do you write two hundred and three thousandths in number form

maks197457 [2]

-- "Two hundred and three thousandths" means' ' 2.003 '.

-- "Two hundred three thousandths" would mean ' 0.203 '.

How can you tell the difference?

The difference is the 'and'. "And" means 'decimal point'.

' 678 ' is read as "six hundred seventy eight", with no 'and'.

' 40.06 ' is read as 'forty and six hundredths'.

' 0.46 ' is read as ' forty-six hundredths'.

5 0

3 years ago