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4 years ago

A. 7 B.7/9 C.63 D.9/7

Mathematics

2 answers:

diamong [38]4 years ago

7 0

I believe it is C. Im 80% sure from my calculations

AURORKA [14]4 years ago

7 0

I think it’s C or D but i’m 100% sure it’s C instead of D

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11.Write the equations of linear and exponential functions that pass through the points (0,9) and (1,3)

Schach [20]

9514 1404 393

Answer:

y = -6x +9

y = 9·(1/3)^x

Step-by-step explanation:

In each case, the y-intercept is 9.

Linear

The slope is rise/run = (3-9)/(1-0) = -6, so the equation is ...

y = mx + b . . . . . . . slope m, intercept b

y = -6x +9

Exponential

The ratio of value at x=1 to that at x=0 is 3/9 = 1/3. That is the "growth factor," so the equation is ...

y = 9·(1/3)^x

7 0

3 years ago

It turns out that (0.125)^3 can be written as 2^a for some integer a. Find a.

Ann [662]

Answer:

$a=-9$

Step-by-step explanation:

We begin with $(0.125)^3$

First, we can convert this decimal into a fraction

$(\frac{1}{8} )^3$

Now, we can simplify the denominator of the fraction

$(\frac{1}{2^{3} } )^3$

Next, we can remove the fraction by rewriting the fraction with a negative power.

$(2^{-3} )^3$

Lastly, we can remove the parenthesis by multiplying the powers together.

$2^{-9}$

This means that $a=-9$

4 0

3 years ago

Find the range of the graphed function

Illusion [34]

Answer:

Correct choice is A

Step-by-step explanation:

The range of the function are all possible values which variable y can take.

From the given diagram you can see that the variable x changes from -4 to the 9. So the domain of the function is $-4\le x\le 9.$

Also the variable y takes its values from -4 to 8. Thus, the range is $-4\le y\le 8.$

4 0

4 years ago

Read 2 more answers

36 rows of 27 trees were planted in the orchard. how many total trees were planted in the orchard

kherson [118]

Answer:

972 trees

Step-by-step explanation:

36 times 27

8 0

3 years ago

Read 2 more answers

The endpoints of a side of rectangle ABCD in the coordinate plane are at A(3, 5) and B(5, 1). Find the equation of the line that

andreyandreev [35.5K]

Answer:

2x + y = 16

Step-by-step explanation:

In rectangle side AB and side CD are parallel, so the slope of both the lines will be same it means that they are parallel to each other.

slope of line AB:

$\textrm{m}=\frac{\textrm{y}_{A}-\textrm{y}_{B}}{\textrm{x}_{A}-\textrm{x}_{B}}\\\textrm{m}=\frac{5-1}{3-5}=\frac{4}{-2}=-2\\\therefore \textrm{m}=-2$

slope of line CD = slope of line AB = -2

∴ equation of line CD:

$\textrm{y}-\textrm{y}_{C}=\textrm{m}(\textrm{x}-\textrm{x}_{C})\\ \textrm{y}-2=-2(\textrm{x}-7)\\2\textrm{x}+\textrm{y}=16$

3 0

3 years ago