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Marianna [84]
3 years ago
13

18 songs for 30 minutes unit rate as a fraction.

Mathematics
1 answer:
zhenek [66]3 years ago
8 0

Answer:

1.67 minutes per song

Step-by-step explanation:

<u> </u><u>3</u><u>0</u><u> </u><u>min</u><u>utes</u>

18 song

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Find the inverse function of h(x)=2x-1/3
Ksenya-84 [330]
To find inverse, you switch x and y, and solve for y
Original: y=2x-1/3
Now: 
x=2y-1/3
x+1/3=2y
(x+1/3)/2=y
y=\frac{x+ \frac{1}{3} }{2}
7 0
3 years ago
2x + 3y = 9 solve for x
lutik1710 [3]

Answer:

X=9/2-3/2

Step-by-step explanation:

1.Move the variable

2x=9-3y

2.Divide both side

X=9/2-3/2

4 0
3 years ago
The sum of two integers is 9 and the sum of their squares is 53. Find the integers.
Schach [20]
X + y = 9 Subtract x from both sides.
y = 9 - x

x^2 + y^2 = 53
x^2 + (9 - x)^2 = 53 Remove the brackets.
x^2 + 81 - 18x + x^2 = 53 Collect the like terms on the left.
2x^2 - 18x + 81 = 53 Subtract 53 from both sides.
2x^2 - 18x + 81 - 53 = 0
2x^2 - 18x + 28 = 0 This factors, but you can see it much easier if you pull out 2 as a common factor.
2(x^2 - 9x + 14) = 0
2(x - 2)(x - 7) =0 You could divide by 2 on both sides. But you can also leave it.
x - 2 = 0
x =  2
x - 7 = 0
x = 7
If x = 2 then y = 7
If x = 7 then y = 2
6 0
3 years ago
Rate of change of 15
konstantin123 [22]

Answer:A General Note: Rate of Change

The average rate of change between two input values is the total change of the function values (output values) divided by the change in the input values.

Step-by-step explanation:

4 0
3 years ago
Write the explicit rule,
meriva

Answer:

a_{n} = 20n + 12

Step-by-step explanation:

There is a common difference d between consecutive terms, that is

d = 52 - 32 = 72 - 52 = 92 - 72 = 20

This indicates the sequence is arithmetic with explicit formula

a_{n} = a₁ + (n - 1)d

where a₁ is the first term and d the common difference

Here a₁ = 32 and d = 20, thus

a_{n} = 32 + 20(n - 1) = 32 + 20n - 20 = 20n + 12

7 0
3 years ago
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