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Shtirlitz [24]
3 years ago
15

(6/y+2) + (1/y-2) = 1

Mathematics
2 answers:
Ainat [17]3 years ago
5 0

Answer:

y = 7

Step-by-step explanation:

Solve for y:

7/y = 1

Take the reciprocal of both sides:

y/7 = 1

Multiply both sides by 7:

Answer:  y = 7

Greeley [361]3 years ago
4 0
The answer is y=7 :))))))
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These tables represent a quadratic function with a vertex at (0,3). What is the average rate of change for the interval from X =
Eva8 [605]

Answer:

-19

Step-by-step explanation:

The missing table is shown in the attachment.

Since the quadratic function has vertex at (0,3), its equation is of the form;

y = a {x}^{2}  + 3

To find the value of 'a' we substitute any other point from the table say (1,2) to get:

2 = a( {1)}^{2}  + 3

a = 2 - 3 =  - 1

Hence the function is

y =  -  {x}^{2} +  3

Now

f(10) =  - 100 + 3 =  - 97

f(9) =  - 81 + 3 =  - 78

The average rate of change from x=9 to x=10 is

\frac{f(10) - f(9)}{10 - 9}  =  \frac{ - 97 -  - 78}{1}  =   - 19

7 0
4 years ago
Yes I need help with another one ASAP
Reil [10]

Step-by-step explanation:

(-1,-1) (0,3)

3- -1 / 0 - -1 = 4/1 = 4

slope is 4

5 0
3 years ago
HELP ASAP PLEASE ////////
Neporo4naja [7]

Answer:  1.25 or 1 ¼

Step-by-step explanation:

This is because volume is (length x width x height).

So you would take (5 ½ times 2 ½ time 9).

This would give you 123.75 or 123 ¾.

Then you would take (125 - 123.75).

4 0
3 years ago
Read 2 more answers
A truck can be rented from Company A for $60 a day plus $0.60 per mile . Company B charges $30 a day plus $0.90 per mile to rent
Mamont248 [21]

x = the number of miles

y = the total cost

Company A:

0.60x + 60 = y     [Company A charges $60 plus $0.60 per mile(x)]

Company B:

0.90x + 30 = y      [Company B charges $30 plus $0.90 per mile(x)]

To find the number of miles where the costs for both companies are the same, you can set the equations equal to each other as the costs(y) are the same:

y = y      Substitute the equations into "y" (substitute (0.60x + 60) and (0.90x + 30) into "y" since y = 0.60x + 60 and y = 0.90x + 30)

0.60x + 60 = 0.90x + 30   To find x, isolate/get the variable "x" by itself. Subtract 30 on both sides

0.60x + 60 - 30 = 0.90x + 30 - 30

0.60x + 30 = 0.90x      Subtract 0.60x on both sides to get "x" on one side of the equation

0.60x - 0.60x + 30 = 0.90x - 0.60x

30 = 0.30x      Divide 0.30 on both sides to get "x" by itself

100 = x     100 miles

(if you need to find out the cost where both companies cost the same, you can substitute/plug in the value of x into one of the equations.)

0.60x + 60 = y     Plug in 100 into "x" since x = 100

0.60(100) + 60 = y

120 = y        At 100 miles, both companies cost $120

8 0
4 years ago
What is the product of 12.4 and 0.632?
katrin [286]
12.4 x 0.632
answer=7.8368
5 0
4 years ago
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