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Alex787 [66]
2 years ago
10

Write the equation using function notation f(x). then find f(0) 2x^2 - 3y = 6

Mathematics
1 answer:
Grace [21]2 years ago
8 0

\quad \huge \quad \quad \boxed{ \tt \:Answer }

\qquad \tt \rightarrow \: f(0) = -2

____________________________________

\large \tt Solution  \: :

\qquad \tt \rightarrow \: 2 {x}^{2}  - 3y = 6

\qquad \tt \rightarrow \: 3y + 6 = 2 {x}^{2}

\qquad \tt \rightarrow \: 3y = 2 {x}^{2}  - 6

\qquad \tt \rightarrow \: y =  \cfrac{2 {x}^{2} - 6 }{3}

\qquad \tt \rightarrow \: y =  \cfrac{2 {}^{} }{3}  {x}^{2}  - 2

[ here, y can be replaced with f(x) because y is a function of x ]

\qquad \tt \rightarrow \: f(x) =  \cfrac{2 {}^{} }{3}  {x}^{2}  - 2

\large\textsf{Find f(0):}

\qquad \tt \rightarrow \: f(0) =  \cfrac{2 {}^{} }{3}  {(0)}^{2}  - 2

\qquad \tt \rightarrow \: f(0) =  0  - 2

\qquad \tt \rightarrow \: f(0) =   - 2

Answered by : ❝ AǫᴜᴀWɪᴢ ❞

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In 2073 BS father's age was 7 times his daughter devyani's age. In 2081 BS father's age will be 3 times only his daughter's age.
Anna007 [38]

Answer:

2069.

Step-by-step explanation:

Let Devyani's age in 2073= x years and y be her fathers age  Then:

y = 7x

- and in 8 years time ( 2081) we have:

y + 8 = 3(x + 8)

y = 3x + 24 - 8

y = 3x  + 16.     Eliminating y from the 2 equations:

7x = 3x + 16

4x = 16

x = 4.

So in 2073 she was 4 years old

Therefore she was born in 2069.

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You buy x bottles of soda for $1.50 using a gift card that you got as a reward for getting good grades
nadya68 [22]

Answer:

0\leq x \leq 10

Step-by-step explanation:

The function is  f(x)=15-1.50x  where x is the number of bottles of soda.

The domain means the set of "allowed" x values.

Also, f(x) means the amount of money left, which cannot be less than 0. So we put 0 into f(x) and solve for x:

f(x)=15-1.5x\\0=15-1.5x\\1.5x=15\\x=\frac{15}{1.50}\\x=10

This means the highest number of bottles you can buy is 10. So the domain is anything from 0 to 10. <em>You can buy 0 until highest 10 bottles. Hence the domain is </em>

0\leq x \leq 10

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3 years ago
Which function below is the inverse of f(x) = The quantity of seven x plus one, over two.?A) f−1(x) = two over the quantity of s
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3 years ago
1. The price of a book decreased from #25 to #20. By how many percent did the price decrease?
valentina_108 [34]

Answer:

(1) C

(2) D

(3) B

(4) B

(5) C

Step-by-step explanation:

(1) % decrease = change in price/initial price × 100 = (25 -20)/25 × 100 = 5/25 × 100 = 20

(2) Number of correct answers he answered in the second test = 150 + (30/100 × 150) = 150 + 45 = 195

(3) Let the number be y

3(y + 2) = 24

y + 2 = 24/3 = 8

y + 2 = 8

y = 8 - 2 = 6

(4) Let my father's age be f, my brother's age be b and my age be m

From the first statement

f/5 = b/3 ----- eqn (1)

From the second statement

b = m + 3 ----- eqn (2)

From the third statement

f = 2m - 3 ------ eqn (3)

Substitute the expression of b and f in eqn 2 & 3 into eqn 1

(2m - 3)/5 = (m + 3)/3

3(2m - 3) = 5(m + 3)

6m - 9 = 5m + 15

6m - 5m = 15 + 9

m = 24

Substitute the value of m into eqn 3

f = 2m - 3 = 2(24) - 3 = 48 - 3 = 45

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Multiply each term in the equation by 28

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-5x = -84 + 34

-5x = -50

x = -50/-5 = 10

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3 years ago
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