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3 years ago

14

Eduardo and Rosie are both collecting data on number of rainy days in a year and the total rainfall for the year. Eduardo record

s rainfall in inches and Rosie in centimeters. How will their correlation coefficients compare?

1 answer:

Licemer1 [7]3 years ago

7 0

The correlation coefficient would not change when the units of one of the variable are different in the two cases.

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Six hundred pictures are taken at a photo shoot. Twelve percent of the pictures are black and white. Which equation can be used

Rainbow [258]

Answer:

the answer is the first and why did you delete my answer

Step-by-step explanation:

7 0

3 years ago

System of equations, special case infinitely many solutions?????

Mashcka [7]

One possible system is

1x + 3y = 4

2x + 6y = 8

Note how 2 is twice as large as 1, 6 is twice as large as 3, and 8 is twice as large as 4.

In other words, the second equation is the result of multiplying both sides of the first equation by 2.

1x+3y = 4

2*(1x+3y) = 2*4

2x+6y = 8

Effectively the two equations in bold are the same which produces the same line. The two lines overlap perfectly to intersect infinitely many times. An intersection is a solution.

4 0

3 years ago

What is tje equation for the linear function whose graph contains the points (2,5) and (3,0) ?

dolphi86 [110]

In order to find a slope, there is an equation:

Y2-Y1/X2-X1

X1=2
X2=3
Y1=5
Y2=0

0-5= -5
3-2=1

Since slope is written as Y/X, slope would be-5/1 or simply, -5.

Now, we need to find the y-intercept.

To do this, shift the original equation:

Original equation: y=-5x+b

Shifted equation: b=y+5x

Now, plug in one of the points.

Let's use (2,5)

b=5+5(2)

5*2=10
10+5=15

y-intercept=15

So, the full equation of the line would be:

y=-5x+15

4 0

4 years ago

Stan's cookie recipe makes 24 cookies and calls for exactly 384 sprinkles. He is wondering how many sprinkles (p ) he will need

Arisa [49]

Answer:

960

Step-by-step explanation:

<u>Given:</u>

Stan's cookie recipe makes 24 cookies.
It needs exactly 384 sprinkles.

<u>To Find:</u>

Number of sprinkles needed for 60 cookies

<h2><u>Solution:</u></h2>

<u>Find the number of sprinkles needed for 1 cookie:</u>

24 cookies = 384 sprinkles
1 cookie = 384 ÷ 24
1 cookie = 16 sprinkles

<u>Find the number of sprinkles needed for 60 cookies:</u>

1 cookie = 16 sprinkles
60 cookies = 16 x 60
60 cookies = 960 sprinkles

Answer: Stan will need 960 sprinkles for 60 cookies.

3 0

2 years ago

Please help! thanks so much

Stels [109]

Answer:

See below.

Step-by-step explanation:

First, we can see that $\lim_{x \to 2} (f(x))= -1$ .

Thus, for the question, we can just plug -1 in:

$\lim_{x \to 2} (\frac{x}{f(x)+1})=\frac{(2)}{-1+1} =und.$

Saying undefined (or unbounded) will be correct.

However, note that as x approaches 2, the values of y decrease in order to get to -1. In other words, $f(x)$ will always be greater or equal to -1 (you can also see this from the graph). This means that as x approaches 2, f(x) will approach -.99 then -.999 then -.9999 until it reaches -1 and then go back up. What is important is that because of this, we can determine that:

$\lim_{x \to 2} (\frac{x}{f(x)+1})=\frac{(2)}{-1+1} = +\infty$

This is because for the denominator, the +1 will always be greater than the f(x). This makes this increase towards positive infinity. Note that limits want the values of the function as it approaches it, not at it.

4 0

3 years ago