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alukav5142 [94]
3 years ago
9

Help please :) thanksss

Mathematics
2 answers:
mixer [17]3 years ago
7 0

Answer:

You got it right it is C

Step-by-step explanation:

to get to the next exact point from (-4,-3) to (0,2) you have to rise 5 and shift 4 to the right, and with the slope being rise over run it would be 5/4

Ahat [919]3 years ago
4 0

Answer:

I agree with your answer

Step-by-step explanation:

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In New York City at the spring equinox there are 12 hours 8 minutes of daylight. The
slamgirl [31]

Answer:

  independent: day number; dependent: hours of daylight

  d(t) = 12.133 +2.883sin(2π(t-80)/365.25)

  1.79 fewer hours on Feb 10

Step-by-step explanation:

a) The independent variable is the day number of the year (t), and the dependent variable is daylight hours (d).

__

b) The average value of the sinusoidal function for daylight hours is given as 12 hours, 8 minutes, about 12.133 hours. The amplitude of the function is given as 2 hours 53 minutes, about 2.883 hours. Without too much error, we can assume the year length is 365.25 days, so that is the period of the function,

March 21 is day 80 of the year, so that will be the horizontal offset of the function. Putting these values into the form ...

  d(t) = (average value) +(amplitude)sin(2π/(period)·(t -offset days))

  d(t) = 12.133 +2.883sin(2π(t-80)/365.25)

__

c) d(41) = 10.34, so February 10 will have ...

  12.13 -10.34 = 1.79

hours less daylight.

5 0
3 years ago
A square with a side length of 4 inches is dilated by a scale factor of 3/2. What is the length of a side of the dilated
sweet-ann [11.9K]
The answer is 6 inches
5 0
2 years ago
A person must score in the upper of the population on an IQ test to qualify for membership in Mensa, the international high-IQ s
Anton [14]

Answer:

The person must have a score of 131 to be able to qualify for Mensa

Step-by-step explanation:

The complete and correct question is as follows;

A person must score in the upper 2% of the population on an IQ test to qualify for membership in Mensa, the international high-IQ society. There are 110,000 Mensa members in 100 countries throughout the world (Mensa International website, January 8, 2013). If IQ scores are normally distributed with a mean of 100 and a standard deviation of 15, what score must a person have to qualify for Mensa(to whole number)

Solution

Firstly, we calculate the z score from the given left tailed area. Since our upper limit is 2%, left tailed area will be 98% which is simply 0.98

Left tailed area = 0.98

Then, using standard score table,

z = 2.054

Mathematically; x = u + z * s

According to this question;

u = mean = 100

z = the critical z score = 2.054

s = standard deviation = 15

Substituting these values into the equation, we have

x = 100 + 15(2.054)

x = 100 + 30.81 = 130.81

This is 131 to whole number

8 0
3 years ago
The daily exchange rates for the​ five-year period 2003 to 2008 between currency A and currency B are well modeled by a normal d
ale4655 [162]

Answer:

50% probability that on a randomly selected day during this​ period, a unit of currency B was worth more than 1.094 units of currency​ A.

Step-by-step explanation:

The Empirical Rule(68-95-99.7 rule) states that, for a normally distributed random variable:

68% of the measures are within 1 standard deviation of the mean.

95% of the measures are within 2 standard deviation of the mean.

99.7% of the measures are within 3 standard deviations of the mean.

In this problem, we have that:

Mean = 1.094

Standard deviation = 0.013

a) What is the probability that on a randomly selected day during this​ period, a unit of currency B was worth more than 1.094 units of currency​ A?

The normal distribution is symmetric, which means that 50% of the units of currency B are more than 1.094 of currency A and 50% are below.

So

50% probability that on a randomly selected day during this​ period, a unit of currency B was worth more than 1.094 units of currency​ A.

5 0
3 years ago
Choose the type of variation that relates the variables in the table. X=.5,2.1,3.5 Y=1,4.2,7 inverse variation direct variation
Natasha_Volkova [10]

Answer:

Maybe combined variation or direct. Those are two answers i came up with.

Step-by-step explanation:

3 0
3 years ago
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