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3 years ago

Which statement is true about exponential functions?

1 answer:

5 0

First you have to sketch out the graph for both the exponential function and the logarithmic function.
Then you will see that the first statement and the second statement is incorrect
Hence the third statement is the correct statement where the x values of the logarithmic function are the y values of the exponential function.

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The table below gives the completion percentage and interception percentage for five randomly selected NFL quarterbacks. Based o

Lina20 [59]

The regression equation is y = -0.42647x + 29.11471 and the correlation coefficient is -0.9607

<h3>How to determine the regression equation?</h3>

The table of values is given as:

Completion Percentage 57 59 62 63 64

Interception Percentage 5 3.5 3 2.5 1.5

Next, we enter the above values in a graphing calculator.

From the graphing calculator, we have the following summary:

Sum of X = 305
Sum of Y = 15.5
Mean X = 61
Mean Y = 3.1
Sum of squares (SSX) = 34
Sum of products (SP) = -14.5
r = -0.9607

Regression Equation = ŷ = bX + a

b = SP/SSX = -14.5/34 = -0.42647

a = MY - bMX = 3.1 - (-0.43*61) = 29.11471

So, the regression equation is

y = -0.42647x + 29.11471

And the correlation coefficient is -0.9607

Read more about regression at:

brainly.com/question/14313391

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7 0

2 years ago

The prices of paperbacks sold at a used bookstore are approximately Normally distributed, with a mean of $7.85 and a standard de

True [87]

Answer:

The answer you want is indeed, (C).

8.04

ED2021

8 0

3 years ago

Which is a fraction?<br><br> 11<br> 2/3<br> 4<br> 2

murzikaleks [220]

A fraction is --->2/3

7 0

3 years ago

Read 2 more answers

. Erin deposited $1,300 into a savings account that earns6% simple interest for 3 years.

SSSSS [86.1K]

The simple interest formula is:

A = P(1 + rt)

where A is the final amount, P is the principal, r is the annual interest rate (as a decimal) and t is time in years.

Substituting with P = 1,300, r = 0.06 and t = 3, we get:

A = 1,300(1 + 0.06*3)

A = 1,300*1.18

A = 1,534

The final amount will be $1,534

5 0

1 year ago

Solve the following system using the substitution method. Enter your answer as an ordered pair in the form (x, y)(x,y).

slamgirl [31]

The value of ordered pair of (x,y) is (-2, -3)

<h3>How to solve the equation by substitution method ? </h3>

x - 5y = 13

4x - 3y = 1

Solve the equation for x

x - 5y = 13

Move '5y' to R.H.S and change it's sign

x=13+5y

Substitute the given value of X into the equation

4x - 3y = 1

4(13+5y)-3y = 1

Solve the equation for y

distribute 4 through the parentheses

52+20y -3y =1

Collect like terms

52+17y = 1

Move constant to R.H.S and change it's sign

17y = 1 - 52

Calculate

17y = - 51

Divide both sides of the equation by 17

17y/17 = -51/17

Calculate

y = -3

Now, substitute the given value of y into the equation

x = 13 + 5y

x= =13+5x(-3)

Solve the equation for x

Multiply the numbers

= 13 - 15

Calculate the difference

= -2

The possible solution of the system is the ordered pair

( x , y )

( x , y ) = ( - 2 , - 3 )

-----------------------------------------------------------------------

Check if the given ordered pair is the solution of the system of equation

-2-5×(-3)=15

4×(-2)-3×(-3)=1

Simplify the equalities

13 = 13

1=1

Since all of the equalities are true, the ordered pair is the solution of the system

( x , y ) = ( - 2 , - 3 )

Therefore the value of ordered pair of (x,y) is (-2, -3)

The complete question is : Solve the system by substitution. x−5y=13 4x−3y=1 Enter your answer as an ordered pair (x,y).

To learn more about substitution method refer to :

brainly.com/question/26094713

#SPJ1

4 0

1 year ago