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3 years ago

Which of the sets of ordered pairs represents a function?

Mathematics

2 answers:

drek231 [11]3 years ago

8 0

The answer is both A and B

STALIN [3.7K]3 years ago

5 0

Answer:

Your Answer is actually Neither A Nor B

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Natalie bought 9 CDs to add to her collection.

GalinKa [24]

Answer:

36 i think

Step-by-step explanation:

she lost half and she has 18 so multiply 18 by 2 u will get 36

4 0

3 years ago

**60 POINTS** How to solve step-by-step...:

Katen [24]

sqrt(3x+7)=x-1 One solution was found : x = 6
Radical Equation entered :

√3x+7 = x-1

Step by step solution :Step 1 :Isolate the square root on the left hand side :

Radical already isolated
 √3x+7 = x-1

Step 2 :Eliminate the radical on the left hand side :

Raise both sides to the second power
 (√3x+7)2 = (x-1)2

 After squaring
 3x+7 = x2-2x+1

Step 3 :Solve the quadratic equation :

Rearranged equation
 x2 - 5x -6 = 0

 This equation has two rational roots:
 {x1, x2}={6, -1}

Step 4 :Check that the first solution is correct :

Original equation
 √3x+7 = x-1

 Plug in 6 for x
 √3•(6)+7 = (6)-1

 Simplify
 √25 = 5
 Solution checks !!
 Solution is:
 x = 6

Step 5 :Check that the second solution is correct :

Original equation
 √3x+7 = x-1

 Plug in -1 for x
 √3•(-1)+7 = (-1)-1

 Simplify
 √4 = -2
 Solution does not check
 2 ≠ -2

One solution was found : x = 6

7 0

3 years ago

Read 2 more answers

Help me with this plz

MArishka [77]

Answer: B

Step-by-step explanation: 3^4 is 81, and 3^2 is 9. 81/9 is 9. :)

5 0

3 years ago

Suppose the new actual number of pizzas sold today was 60. The original previous day sold was 65. Describe the number of pizzas

Lady bird [3.3K]

Answer: 1) Pizzeria must sell 78 pizzas for receiving the bonus.
2) The number of pizzas sold is decreased by Approximately 7.69 %.
Step-by-step explanation:
1) The number of pizza sold yesterday = 65,
The target for receiving the bonus = 20% more than the number of pizza sold yesterday
= 20% more than 65,
= 65 + 20% of 65 ( 1% = 0.01 ⇒ 20% = 0.2 )
= 65 + 0.2 × 65
= 65 + 13 = 78.
Hence, they must sell 78 pizzas for receiving the bonus.
2) If the actual number of pizza sold today = 60
⇒ Total reduction in the number of pizza = 65 - 60
= 5
Thus, the percentage decrease in the number of pizza

7 0

3 years ago

1/4(x-2)+4=12 1/4(x-2)=8 x-2=2 x=4 correct the error

konstantin123 [22]

Step-by-step explanation:

(i) x + 3 = 0

L.H.S. = x + 3

By putting x = 3,

L.H.S. = 3 + 3 = 6 ≠ R.H.S.

∴ No, the equation is not satisfied.

(ii) x + 3 = 0

L.H.S. = x + 3

By putting x = 0,

L.H.S. = 0 + 3 = 3 ≠ R.H.S.

∴ No, the equation is not satisfied.

(iii) x + 3 = 0

L.H.S. = x + 3

By putting x = −3,

L.H.S. = − 3 + 3 = 0 = R.H.S.

∴ Yes, the equation is satisfied.

(iv) x − 7 = 1

L.H.S. = x − 7

By putting x = 7,

L.H.S. = 7 − 7 = 0 ≠ R.H.S.

∴ No, the equation is not satisfied.

(v) x − 7 = 1

L.H.S. = x − 7

By putting x = 8,

L.H.S. = 8 − 7 = 1 = R.H.S.

∴ Yes, the equation is satisfied.

(vi) 5x = 25

L.H.S. = 5x

By putting x = 0,

L.H.S. = 5 × 0 = 0 ≠ R.H.S.

∴ No, the equation is not satisfied.

(vii) 5x = 25

L.H.S. = 5x

By putting x = 5,

L.H.S. = 5 × 5 = 25 = R.H.S.

∴ Yes, the equation is satisfied.

(viii) 5x = 25

L.H.S. = 5x

By putting x = −5,

L.H.S. = 5 × (−5) = −25 ≠ R.H.S.

∴ No, the equation is not satisfied.

(ix) = 2

L.H.S. =

By putting m = −6,

L. H. S. = ≠ R.H.S.

∴No, the equation is not satisfied.

(x) = 2

L.H.S. =

By putting m = 0,

L.H.S. = ≠ R.H.S.

∴No, the equation is not satisfied.

(xi) = 2

L.H.S. =

By putting m = 6,

L.H.S. = = R.H.S.

∴ Yes, the equation is satisfied.

8 0

3 years ago

Read 2 more answers