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xxTIMURxx [149]
3 years ago
7

Simplify 1/9-1/x 1/81-1/x^2

Mathematics
1 answer:
tekilochka [14]3 years ago
5 0
\cfrac{ \frac{1}{9}-  \frac{1}{x} }{ \frac{1}{81} - \frac{1}{x^2} }=  \cfrac{ \frac{x-9}{9x} }{ \frac{x^2-81}{81x^2} }=  \cfrac{x-9}{9x}* \cfrac{81x^2}{(x-9)(x+9)}= \cfrac{9x}{x+9}
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Find the x- and y- intercepts of the equation -x+5y=10.
mario62 [17]

Answer:

X Intercept: (-10,0), Y Intercept: (0,2)

Step-by-step explanation:

Well, firstly you need to rewrite the equation to make it easier. After rewriting it you have the equation y=x/5+2 by adding the x to the right side and dividing everything by 5. Now simply plug in your zeroes in their respective places. For the x intercept, your y value must equal 0 so we have the equation 0=x/5+2. After solving it, x must be -10 in order for our y value to be 0 getting us for the x intercept (-10,0). For the y intercept, your x value must equal zero so you simply subsitute zero in the equation for x which I will do here: y=0/5+2. If our x value is zero, consequently, our y value will be 2 getting us for the y intercept, (0,2).

4 0
2 years ago
ALGEBRA 2!!!!!!!HELP
Inessa [10]

Answer:

x = - 1, x = - 11

Step-by-step explanation:

Given

2| x + 6 | - 4 = 6 ( add 4 to both sides )

2|x + 6 | = 10 ( divide both sides by 2 )

| x + 6 | = 5

The absolute value function always gives a positive result, but the expression inside can be positive or negative, that is

x + 6 = 5 or - (x + 6) = 5

solve both

x + 6 = 5 ( subtract 6 from both sides )

x = - 1

or

- (x + 6) = 5 , that is

- x - 6 = 5 ( add 6 to both sides )

- x = 11 ( multiply both sides by - 1 )

x = - 11

8 0
2 years ago
Ruben sees 14 wheels on a total of 6 bicycles and tricycles. How many bicycles and tricycles are there?
Rina8888 [55]
4 bicycles 2 tricycles 
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2 (bike) time 3 (number of wheels on each) = 6
8+6=14 

5 0
3 years ago
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Veronika [31]
The reference angle for 240° is 60° because 240 is in quadrant III. If you were to subtract 240 from 180 you’d get 60.
5 0
2 years ago
In the set of numbers from 1 to 12 which elements are in both the subset of even numbers and the subsets of the multiples of 4?
agasfer [191]

The answers are 4,8, and 12.

5 0
3 years ago
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