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3 years ago

8

SOMEONE PLEASE HELP TO BE MARKED THE BRAINLIEST

1 answer:

worty [1.4K]3 years ago

6 0

Answer: B

Step-by-step explanation:

Let's work this problem backwards. So, if he has y dollars left after spending 25% the second time or 3/4 of the money left. So, inverse it to get $\frac{4}{3}$ y. Then, do the same for 20% or 4/5, then 4/3y * 5/4 = 5/3y

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Write an equation for the line parallel to the given line that contains C

Ksenya-84 [330]

Answer:

The equation would be y = -2x + 10

Step-by-step explanation:

To find the line parallel going through the given point, first note that parallel lines have the same slope. This means that we have a slope of -2 in the original line, therefore the parallel line will also have a slope of -2. Now we can use this and the given point to find the line using point-slope form.

y - y1 = m(x - x1)

y - 6 = -2(x - 2)

y - 6 = -2x + 4

y = -2x + 10

7 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

Qual é a frequência de cada gênero de leitura citados?

Karo-lina-s [1.5K]

Answer:

............................

6 0

3 years ago

HELP ME ASAP!!!!!!!!!

Leokris [45]

Answer:

Step-by-step explanation:No

4 0

3 years ago

Read 2 more answers

Pls answer quickly before 3:30

allochka39001 [22]

Slope= -2/3 and y-intercept=4
Your first point will be on 4 then to get your second point go down 2 then to the right 3.

8 0

3 years ago