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3 years ago

Solve for r but write the answer in Simplified form -12 = 15r

Mathematics

1 answer:

user100 [1]3 years ago

4 0

Answer:

r = -4/5

Step-by-step explanation:

Divide both sides by 15 so you have r

-12/15 simplify (both by 3)

-4/5

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HELP!!!

ella [17]

Answer:

120

Step-by-step explanation:

We are given that the function for the number of students enrolled in a new course is $f(x) = 4^{x}-1$ .

It is asked to find the average increase in the number of students enrolled per hour between 2 to 4 hours.

We know that the average rate of change is given by,

$A = \frac{f(x)-f(a)}{x-a}$ ,

where f(x)-f(a) is the change in the function as the input value (x-a) changes.

Now, the number of students enrolled at 4 = f(4) = $f(x) = 4^{4}-1$ = 255 and the number of students enrolled at 2 = f(2) = $f(x) = 4^{2}-1$ = 15

So, the average increase $A=\frac{f(4)-f(2)}{4-2}$ = $A=\frac{255-15}{4-2}$ = $A=\frac{240}{2}$ = 120.

Hence, the average increase in the number of students enrolled is 120.

3 0

4 years ago

What is the simplest form of this expression? (x^-3)^1/3

IrinaK [193]

The simplest form is, <span>x-1 </span>
<span>
</span>

6 0

3 years ago

Read 2 more answers

Please help, thanks :) (Question is attached below)

expeople1 [14]

Answer:

Step-by-step explanation:

the upper left graph is the correct answer

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3 years ago

To get from home to his friend Kelsey's house, Henry would have to walk 2 miles due north. To get from home to his friend Mike's

n200080 [17]

Answer:

Step-by-step explanation:

234m

5 0

3 years ago

1.94x - 10/8x + 4.32 = [2(1.15x+8.5)]

kipiarov [429]

$1,94x-\frac{10}{8}x+4,32=[2(1,15x+8,5)]\\\\
1,94x-1,25x+4,32=2,3x+17\\\\
0,69x+4,32=2,3x+17\ \ \ |Subtract\ 2,3x\\\\
-1,61x+4,32=17\ \ \ |Subtract\ 4,32\\\\
-1,61x=12,68\ \ \ |Divide\ by\ -1,61\\\\\boxed{x\approx7,9}
$

8 0

3 years ago